Journal articles on the topic 'Food values, Choice experiment'
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Ghvanidze, Sophie, Natalia Velikova, Tim Dodd, and Wilna Oldewage-Theron. "A discrete choice experiment of the impact of consumers’ environmental values, ethical concerns, and health consciousness on food choices." British Food Journal 119, no. 4 (April 3, 2017): 863–81. http://dx.doi.org/10.1108/bfj-07-2016-0342.
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Purpose Over the last few decades, consumers’ concerns for healthier lifestyles and the environment have become the driving forces for forming food-buying intentions. The purpose of this paper is to investigate the impact of product attributes regarding nutrition and health benefits of products, the environmental impact of production and social responsibility of producers on consumers’ food and wine choices. Design/methodology/approach The empirical analysis is based on an online survey conducted in the USA, the UK and Germany, and incorporates a discrete choice experiment with visual shelf simulations. Findings Price and nutrition information are much more influential on consumers’ food choices than information about social responsibility of producers or the ecological impact of production. Product attributes emphasizing the ecological impact of production and social responsibility of food producers are specifically valued by consumers with high levels of environmental consciousness and by those concerned about goods production. Consumers who are health conscious regarding their lifestyle and diets derive high utility values from the nutritional information of the product. Practical implications The study contributes to an understanding of how to promote healthier food and wine choices and social and environmental responsibility of food and wine producers in various markets. Originality/value The study offers a comparison of product attributes concerning ecological, social, nutrition and health benefits of the product; as well the investigation of congruent interrelationships between the consumers’ values and related product attributes in three culturally distinct consumer groups.
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Green, Danielle J., Alison Harris, Aleena Young, and Catherine L. Reed. "Embodied valuation: Directional action is associated with item values." Quarterly Journal of Experimental Psychology 71, no. 8 (January 1, 2018): 1734–47. http://dx.doi.org/10.1080/17470218.2017.1360370.
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We have a lifetime of experience interacting with objects we value. Although many economic theories represent valuation as a purely cognitive process independent of the sensorimotor system, embodied cognitive theory suggests that our memories for items’ value should be linked to actions we use to obtain them. Here, we investigated whether the value of real items was associated with specific directional movements toward or away from the body. Participants priced a set of food items to determine their values; they then used directional actions to classify each item as high- or low-value. To determine if value is linked to specific action mappings, movements were referenced either with respect to the object (push toward high-value items; pull away from low-value items) or the self (pull high-value items toward self; push low-value items away). Participants who were assigned (Experiment 1) or chose (Experiment 2) to use an object-referenced action mapping were faster than those using a self-referenced mapping. A control experiment (Experiment 3) using left/right movements found no such difference when action mappings were not toward/away from the body. These results indicate that directional actions toward items are associated with the representation of their value, suggesting an embodied component to economic choice.
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Mazzocchi, Chiara, Luigi Orsi, and Guido Sali. "Consumers’ Attitudes for Sustainable Mountain Cheese." Sustainability 13, no. 4 (February 5, 2021): 1743. http://dx.doi.org/10.3390/su13041743.
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The shift towards more sustainable consumptions and habits have had tangible impacts on food markets, which have accepted this challenge by offering a variety of certification systems to pull consumers aside. However, food purchasing choices are also guided by ethical, environmental and cultural motivations, functioning as drivers of food acquiring. This study aimed at assessing the influence of consumers’ attitudes in purchasing an Alpine cheese labelled with a food sustainability logo, as the mountain product brand, following a two-step approach. We estimated the consumers’ preferences for some sustainable labels by using Choice Experiments (CE), followed by a Partial Least Squares Structural Equation Modeling (PLS-SEM) approach to assess the influence of three attitudinal scales on the consumers’ behavior. The main results show the influence of green consumers’ values on the mountain product brand choice, and a strong relationship between green consumers’ and animal well-being values. In the conclusions, some policy indications are provided.
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Camarena-Gómez, Dena Mª, and Ana I. Sanjuán-López. "Preferencias hacia el origen de un alimento étnico y la influencia de variables psicográficas." Economía Agraria y Recursos Naturales 10, no. 1 (October 12, 2011): 71. http://dx.doi.org/10.7201/earn.2010.01.05.
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In recent years, knowledge and consumption of ethnic food has spread in Spain, among other factors, enhanced by immigration. Immigrants constitute a new market segment, with specific food demands that respond to the necessity of keeping their culinary traditions. In this research a choice experiment is conducted in order to investigate Latin-American consumers’ preferences toward an essential food in their diets, corn flour. In order to allow preferences to differ across individuals, a mixed logit model is estimated. Three psychographic variables are contemplated as possible sources for preference heterogeneity: the degree of food neo-phobia, ethnocentrism and personal values. Consumers more neo-phobic, and those with personal values than emphasize personal development, are more price-sensitive, while, more ethnocentric consumers favour the patriotic origin of the ethnic food.
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Jin, Shaosheng, Haoyang Li, and Yao Li. "Preferences of Chinese consumers for the attributes of fresh produce portfolios in an e-commerce environment." British Food Journal 119, no. 4 (April 3, 2017): 817–29. http://dx.doi.org/10.1108/bfj-09-2016-0424.
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Purpose In recent years, fresh produce (fresh vegetables and fruit) has been circulated widely via e-commerce in Chinese large cities in the form of fresh produce portfolios (FPPs). The purpose of this paper is to analyze the preferences of Chinese consumers for specific FPP attributes. Design/methodology/approach A choice experiment approach was used to explore consumer preferences. The authors conducted a means-end-chains evaluation to select the attributes for the choice experiment. The authors used a fractional factorial design and finally obtained 18 choice scenarios. The authors collected 166 effective consumer questionnaires in Beijing. Findings The authors found that among the four attributes considered, certification and the diversity of the FPP had significant effects on the willingness to pay (WTP) among consumers. Residents had heterogeneous preferences for FPP diversity and certification, but certification was the major concern when considering fresh produce in the FPP. With regard to the WTP for attributes in the portfolio, the WTP values for “green” and “organic” attributes were high, but the WTP for the diversity of FPPs was low. Originality/value This study is the first attempt to explore the preferences of Chinese consumers regarding the attributes of FPP in an e-commerce environment.
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Villegas-Navas, Victoria, Maria-Jose Montero-Simo, and Rafael A. Araque-Padilla. "The Effects of Foods Embedded in Entertainment Media on Children’s Food Choices and Food Intake: A Systematic Review and Meta-Analyses." Nutrients 12, no. 4 (March 31, 2020): 964. http://dx.doi.org/10.3390/nu12040964.
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While watching or playing with media, children are often confronted with food appearances. These food portrayals might be a potential factor that affects a child’s dietary behaviors. We aimed to comprehensively expound the effects of these types of food appearances on dietary outcomes of children. Our objectives were to synthetize the evidence of the experiments that study the effects of foods embedded in children’s entertainment media throughout a systematic review, to conduct two meta-analyses (food choice and intake) in order to quantify the effects, and to examine to what extent the effects of foods embedded in entertainment media varies across different moderating variables. We conducted a systematic search of five databases for studies published up to July 2018 regarding terms related to children and foods embedded in entertainment media. We identified 26 eligible articles, of which 13 (20 effect sizes) and 7 (13 effect sizes) were considered for a meta-analysis on food choice and intake, respectively. Most of the studies were assessed as having a middle risk of bias. Overall, food being embedded in entertainment media is a strategy that affects the eating behaviors of children. As most of the embedded foods in the included studies had low nutritional values, urgent measures are needed to address the problem of childhood obesity.
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Poling, Alan, Eb Blakely, Victoria Pellettiere, and Mitchell Picker. "CHOICE BETWEEN SEQUENCES OF FIXED-RATIO SCHEDULES: EFFECTS OF RATIO VALUES AND PROBABILITY OF FOOD DELIVERY." Journal of the Experimental Analysis of Behavior 47, no. 2 (March 1987): 225–32. http://dx.doi.org/10.1901/jeab.1987.47-225.
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Ballco, Petjon, and Tiziana De Magistris. "Spanish Consumer Purchase Behaviour and Stated Preferences for Yoghurts with Nutritional and Health Claims." Nutrients 11, no. 11 (November 12, 2019): 2742. http://dx.doi.org/10.3390/nu11112742.
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Nutritional and health claims are a useful tool for promoting healthier food choices and prevent non-communicable disease[s] (NCDs). Exhaustive literature that has investigated consumer evaluation of the presence of nutritional and/or health claim(s) during the decision-making process suggests that consumers’ sensitivity towards nutritional claims (NCs) and health claims (HCs) are still fragmented and should be further investigated. Our objective is to study the relationship between choice behaviour, attitudes and socio-demographic characteristics in order to evaluate the effectiveness of consumer characteristics in predicting Spanish consumers’ choice of products with NCs and HCs. A discrete choice experiment for yoghurt was conducted on a sample of 218 Spanish consumers, stratified by age, gender, education level, and income. Applying a latent class approach has enabled us to identify a niche of individuals, sensitive of NCs and HCs and to characterize them with respect to the rest of population. Results suggest that consumers positively valued most claims, however, the valuation was heterogeneous, and three consumer segments were identified: ‘health-claims oriented’, ‘nutritional- and health-claim oriented’ and ‘indifferent’. The results supply insights for the development of more targeted promotion campaigns, as well as for further actions in food marketing.
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Salnikova, Ekaterina, and John L. Stanton. "Remove the negatives or highlight the positives? The effect of negativity bias in food preferences." British Food Journal 123, no. 7 (March 11, 2021): 2601–16. http://dx.doi.org/10.1108/bfj-11-2020-1035.
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PurposeThe interest of food consumers in improved quality, healthiness, freshness, and authenticity results in a growing introduction of new food products featuring a variety of “positive” (e.g. “Enriched with Vitamin D”) and “negative” (e.g. “Low in Fat”) label claims. It's the goal of this paper to uncover how the presence of positive and absence of negative benefits or attributes balance in the minds of consumers, determine which label claims would have the greatest impact on consumers' intention to buy milk, and understand the role of stating these in either a positive or a negative frame.Design/methodology/approachTo achieve the objectives of this paper, we utilize (1) descriptive study to identify which claims are currently used by the dairy marketing practitioners, (2) focus group to identify the importance of positive and negative product claims, and (3) online survey including discrete choice experiment (DCE) to determine the effect of positive and negative claims on consumer food choices.FindingsWe provide evidence of negative bias in consumers facing the choice between foods with enriched positive ingredients vs foods that are free-from negative ingredients. Specifically, we find that consumers have a general tendency toward giving negative attributes more weight than positive ones.Research limitations/implicationsThe research was conducted in one food category.Practical implicationsThis research should encourage food marketers to include more positive statements about their products rather than the current focus on negatives such as no GMOs or no hormones. the authors understand these negative attributes need to be made but there should also be positive attributes.Social implicationsConsumers will get a total picture of the product values and not skewed to one point.Originality/valueThe concept of negative bias has not be adequately explored in the food category on product labels.
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Vila-López, Natalia, Ines Kuster-Boluda, and Adrian Alacreu-Crespo. "Designing a Low-Fat Food Packaging: Comparing Consumers’ Responses in Virtual and Physical Shopping Environments." Foods 10, no. 2 (January 21, 2021): 211. http://dx.doi.org/10.3390/foods10020211.
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This paper aims to test to what extent emotional responses towards a low-fat product presented virtually converge with emotional responses toward this product when presented physically. Second, we want to probe if low-order emotions (physiological/unconscious responses) and high-order emotions (cognitive/conscious responses) converge to explain healthy product choices. To this end, 83 young participants were engaged in our experiment. Two packaging design variables were manipulated with the help of a real company (the color and the message), so that six different packages were created. Two different buying contexts were simulated: A virtual context and a physical context. Physiological responses were continuously recorded in both contexts (heart rates, electro-dermal responses, and eye muscle reactions). At the end, participants provided cognitive responses in a questionnaire concerning the selected package. Our results have demonstrated that low-order emotions remain stable (from a virtual to a physical environments). Virtual simulations elections and real product elections are correlated (X2 = 40.493; p < 0.02). Physiological and cognitive responses do not converge. Correlations between unconscious responses (low-order emotions) and self-reported measures (high-order emotions) was contrary to expectations (negative sign). Only low-order emotions explain product choices. On the contrary, real packaging choice and high-order emotions correlated inversely (the t values were significant but negative).
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Dominici, Andrea, Fabio Boncinelli, Francesca Gerini, and Enrico Marone. "Consumer preference for wine from hand-harvested grapes." British Food Journal 122, no. 8 (October 31, 2019): 2551–67. http://dx.doi.org/10.1108/bfj-04-2019-0301.
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Purpose The purpose of this paper is to investigate preferences for wine made from hand-harvested grapes, and the interactive effect between this attribute and organic certification. Design/methodology/approach Data were collected via an online choice experiment involving a sample of 408 Italian wine consumers. A random parameter logit was performed to estimate consumer preferences for wine attributes: harvest type, organic and the interaction between these. The experiment also includes geographical indications and price. Furthermore, a latent class model (LCM) is performed to investigate taste heterogeneity for the included wine attributes. Findings On average, consumers prefer the wine produced with hand-harvested grapes. The hypothesis of an interaction between organic and hand-harvested attributes is rejected. Using the LCM, the authors identify three segments with significant taste heterogeneity in terms of the magnitude and the sign of the parameters. Moreover, consumer attitudes towards food naturalness differ according to their belonging to the segments. Originality/value The novelty of this article is twofold. First, this study investigates, for the first time, the impact of the hand-harvested method on consumer wine preferences. Second, hand-harvesting and organic have independent values.
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Hascher, Joshua, Nitisha Desai, and Ian Krajbich. "Incentivized and non-incentivized liking ratings outperform willingness-to-pay in predicting choice." Judgment and Decision Making 16, no. 6 (November 2021): 1464–84. http://dx.doi.org/10.1017/s1930297500008500.
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AbstractA core principle in decision science is that people choose according to their subjective values. These values are often measured using unincentivized scales with arbitrary units (e.g., from 0 to 10) or using incentivized willingness-to-pay (WTP) with dollars and cents. What is unclear is whether using WTP actually improves choice predictions. In two experiments, we compare the effects of three different subjective valuation procedures: an unincentivized rating scale, the same scale with incentives, and incentivized WTP. We use these subjective values to predict behavior in a subsequent binary food-choice task. The unincentivized rating task performed better than the incentivized WTP task and no worse than the incentivized rating task. These findings challenge the view that subjective valuation tasks need to be incentivized. At least for low-stakes decisions, commonly used measures such as WTP may reduce predictive power.
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Bastounis, Anastasios, John Buckell, Jamie Hartmann-Boyce, Brian Cook, Sarah King, Christina Potter, Filippo Bianchi, Mike Rayner, and Susan A. Jebb. "The Impact of Environmental Sustainability Labels on Willingness-to-Pay for Foods: A Systematic Review and Meta-Analysis of Discrete Choice Experiments." Nutrients 13, no. 8 (July 31, 2021): 2677. http://dx.doi.org/10.3390/nu13082677.
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Food production is a major contributor to environmental damage. More environmentally sustainable foods could incur higher costs for consumers. In this review, we explore whether consumers are willing to pay (WTP) more for foods with environmental sustainability labels (‘ecolabels’). Six electronic databases were searched for experiments on consumers’ willingness to pay for ecolabelled food. Monetary values were converted to Purchasing Power Parity dollars and adjusted for country-specific inflation. Studies were meta-analysed and effect sizes with confidence intervals were calculated for the whole sample and for pre-specified subgroups defined as meat-dairy, seafood, and fruits-vegetables-nuts. Meta-regressions tested the role of label attributes and demographic characteristics on participants’ WTP. Forty-three discrete choice experiments (DCEs) with 41,777 participants were eligible for inclusion. Thirty-five DCEs (n = 35,725) had usable data for the meta-analysis. Participants were willing to pay a premium of 3.79 PPP$/kg (95%CI 2.7, 4.89, p ≤ 0.001) for ecolabelled foods. WTP was higher for organic labels compared to other labels. Women and people with lower levels of education expressed higher WTP. Ecolabels may increase consumers’ willingness to pay more for environmentally sustainable products and could be part of a strategy to encourage a transition to more sustainable diets.
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Salloum, Ramzi G., Jordan J. Louviere, Kayla R. Getz, Farahnaz Islam, Dien Anshari, Yoojin Cho, Richard J. O’Connor, David Hammond, and James F. Thrasher. "Evaluation of strategies to communicate harmful and potentially harmful constituent (HPHC) information through cigarette package inserts: a discrete choice experiment." Tobacco Control 27, no. 6 (July 13, 2017): 677–83. http://dx.doi.org/10.1136/tobaccocontrol-2016-053579.
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BackgroundThe US Food and Drug Administration (FDA) has regulatory authority to use inserts to communicate with consumers about harmful and potentially harmful constituents (HPHCs) in tobacco products; however, little is known about the most effective manner for presenting HPHC information.MethodsIn a discrete choice experiment, participants evaluated eight choice sets, each of which showed two cigarette packages from four different brands and tar levels (high vs low), accompanied by an insert that included between-subject manipulations (ie, listing of HPHCs vs grouping by disease outcome and numeric values ascribed to HPHCs vs no numbers) and within-subject manipulations (ie, 1 of 4 warning topics; statement linking an HPHC with disease vs statement with no HPHC link). For each choice set, participants were asked: (1) which package is more harmful and (2) which motivates them to not smoke; each with a ’no difference' option. Alternative-specific logit models regressed choice on attribute levels.Results1212 participants were recruited from an online consumer panel (725 18–29-year-old smokers and susceptible non-smokers and 487 30–64-year-old smokers). Participants were more likely to endorse high-tar products as more harmful than low-tar products, with a greater effect when numeric HPHC information was present. Compared with a simple warning statement, the statement linking HPHCs with disease encouraged quit motivation.ConclusionsNumeric HPHC information on inserts appears to produce misunderstandings that some cigarettes are less harmful than others. Furthermore, brief narratives that link HPHCs to smoking-related disease may promote cessation versus communications that do not explicitly link HPHCs to disease.
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Phelan, John P., and Richard H. Baker. "Optimal Foraging in Peromyscus Polionotus: the Influence of Item-Size and Predation Risk." Behaviour 121, no. 1-2 (1992): 95–109. http://dx.doi.org/10.1163/156853992x00453.
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AbstractPredictions of optimal foraging theory were tested for Peromyscus polionotus in the laboratory and in two field experiments in which seed item-size was manipulated. In the laboratory, handling times for millet, sunflower seeds, and peanuts were determined. Additionally, energy/handling (E/h) time values were calculated and seed preference experiments were conducted. Mice showed a clear preference for the seeds more profitable in terms of E/h. Seed preference experiments were also conducted in the field to determine the relative influence of optimal foraging and predation risk in diet choice. In the first of the two field experiments, behavioral strategies to reduce predation vulnerability could not influence differential seed selection. As predicted, the mice again showed a preference for the more profitable seed type. In the second experiment, animals were presented with conflicting demands because foraging on a more abundant, but less preferred, seed type afforded the animal an increased ability to avoid predators. Presented with this opportunity to reduce the risk of predation, the animals shifted their preference to the safer, but less profitable food. This shift in seed preference was accompanied by predation-risk-reducing changes in spatial foraging patterns.
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Кукин, Михаил, and Mikhail Kukin. "Import-Substituting Food Additive E316 (Sodium Isoascorbate): Production Patterns." Food Processing: Techniques and Technology 48, no. 4 (February 13, 2019): 39–47. http://dx.doi.org/10.21603/2074-9414-2018-4-39-47.
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Sodium isoascorbate is one of the most popular antioxidants in food industry. Russia imports it from abroad. Thus, import substitution requires a thorough research into the patterns of isoascorbate technology production and development. The mass fraction of the main substance in the solution and crystals of the target product was determined by iodometric titration. It was established that the rate of oxidative degradation of sodium isoascorbate solutions is from 0.01%/h at 25°C to 0.80%/h at 82°C, depending on the temperature and duration of the process, as well as contact with metal and oxygen of the air. The experiment substantiated the choice of metal equipment and the temperature limit of 60°C. The equivalent pH values during the interaction of isoascorbic acid solutions with sodium hydroxide, carbonate, and sodium bicarbonate solutions were 7.5, 7.0, and 5.6, respectively. The author also defined the influence of equilibrium concentrations of aqueous solutions of isoascorbic acid and sodium isoascorbate on temperature. The optimal method was to add a solution of sodium hydroxide into a solution of isoascorbic acid with a ratio between the masses of sodium hydroxide solution, crystalline isoascorbic acid, and prepared water, respectively, 1:2.11:6.13. The solution obtained at such ratios had a supersaturation coefficient of 1.05 at a temperature of 60°C. The experiment revealed the time required to establish equilibrium in the crystallizing system and the dependence of the solubility of sodium isoasorbate on the mass fraction of ethyl alcohol in solution. It was proposed to separate the target product from the solution by isohydric crystallization followed by isothermal crystallization, followed by washing the crystals with ethyl alcohol. According to the proposed technology, sodium isoascorbate was obtained with a mass fraction of the basic substance of at least 99.0%. The obtained data can be used in the development of industrial technology for the production of sodium isoascorbate.
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Biesta-Peters, Elisabeth G., Martine W. Reij, Han Joosten, Leon G. M. Gorris, and Marcel H. Zwietering. "Comparison of Two Optical-Density-Based Methods and a Plate Count Method for Estimation of Growth Parameters of Bacillus cereus." Applied and Environmental Microbiology 76, no. 5 (January 15, 2010): 1399–405. http://dx.doi.org/10.1128/aem.02336-09.
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ABSTRACT Quantitative microbiological models predicting proliferation of microorganisms relevant for food safety and/or food stability are useful tools to limit the need for generation of biological data through challenge testing and shelf-life testing. The use of these models requires quick and reliable methods for the generation of growth data and estimation of growth parameters. Growth parameter estimation can be achieved using methods based on plate counting and methods based on measuring the optical density. This research compares the plate count method with two optical density methods, namely, the 2-fold dilution (2FD) method and the relative rate to detection (RRD) method. For model organism Bacillus cereus F4810/72, the plate count method and both optical density methods gave comparable estimates for key growth parameters. Values for the maximum specific growth rate (μ max) derived by the 2FD method and by the RRD method were of the same order of magnitude, but some marked differences between the two approaches were apparent. Whereas the 2FD method allowed the derivation of values for lag time (λ) from the data, this was not possible with the RRD method. However, the RRD method gave many more data points per experiment and also gave more data points close to the growth boundary. This research shows that all three proposed methods can be used for parameter estimation but that the choice of method depends on the objectives of the research.
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Bandyopadhyay, M., S. Chatterjee, S. Chakraborty, and J. Chattopadhyay. "Density Dependent Predator Death Prevalence Chaos in a Tri-trophic Food Chain Model." Nonlinear Analysis: Modelling and Control 13, no. 3 (July 25, 2008): 305–24. http://dx.doi.org/10.15388/na.2008.13.3.14559.
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Ecological systems have all the properties to produce chaotic dynamics. To predict the chaotic behavior in an ecological system and its possible control mechanism is interesting. Aziz-Alaoui [1] considered a tri-trophic food-chain model with modified Leslie-Gower type growth rate for top-predator population and established the chaotic dynamics exhibited by the model system for a certain choice of parameter values. We have modified the said model by incorporating density dependent death rate for predator population. Our mathematical findings reveal the fact that there are two coexisting equilibrium points one of which is a source and the other one is a sink. The positive equilibrium point which is sink is actually globally asymptotically stable under certain parametric conditions. Numerical experiment analysis shows that the model system are capable to produce chaotic dynamics when the rate of intra specific completion is very low and chaotic dynamics disappears for a certain value of the rate of intra specific completion for predator species. Our results suggest that the consideration of density dependent death rate for predator species have the ability to control the chaotic dynamics.
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Lourenço-Gomes, Lina, Tânia Gonçalves, and João Rebelo. "The distributors’ view on US wine consumer preferences. A discrete choice experiment." Bio-based and Applied Economics 10, no. 4 (March 31, 2022): 325–33. http://dx.doi.org/10.36253/bae-10801.
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This study explored the view that distributors have towards the most valued wine attributes by consumers in the US market, applying the discrete choice experiments technique. Furthermore, to explore the extent to which the distributors’ perspective may reflect consumers’ preferences, the results are analyzed considering previous evidence with consumers in the same market. The results from a scaled multinomial logit, mixed logit and generalized logit models reveal similarities with consumer studies’ findings, especially for the influence of medals/awards, the origin of the wine, grape variety, and price, and it also identifies possible trends in the market. This evidence suggests that data collected using the knowledge and experience of wine distributors generates valuable information through a smaller sample at a lower cost than through applying consumer surveys, which is relevant in large markets with a higher number of consumers.
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Edenbrandt, Anna Kristina. "Demand for pesticide-free, cisgenic food? Exploring differences between consumers of organic and conventional food." British Food Journal 120, no. 7 (July 2, 2018): 1666–79. http://dx.doi.org/10.1108/bfj-09-2017-0527.
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Purpose The purpose of this paper is to explore the consumer acceptance of foods that are pesticide-free while obtained by cisgenics, a form of genetic modification that only allows gene transfers between sexually compatible species. Potential differences in acceptance between conventional and organic consumer segments are explored. Design/methodology/approach Data were collected from a survey, including a choice experiment, which was distributed to a consumer panel in Denmark. Survey responses were combined with actual purchase data among the same respondents and thereby providing information about the respondents’ share of organic consumption. Findings No consumer segment differentiated between pesticide-free, cisgenic bread and conventional alternatives. Conventional consumers preferred cisgenics over transgenics, while pesticide-free is not highly valued. Frequent organic consumers were having willingness-to-pay (WTP) a large premium for organic, indicating that they will continue to purchase such products even if cisgenic, pesticide-free products are introduced. Originality/value This paper provides insights on the potential reception of cisgenic food, and if there is a positive willingness to pay for a pesticide-free label if this is cisgenics. Moreover, the possibility to allow new breeding techniques in the organic requirements has been discussed, and this paper contributes with insights on the organic consumers’ preferences on this matter.
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Sajdakowska, Marta, and Agnieszka Tekień. "To Raise or Not to Raise the Level of Ingredients in Yoghurts: Polish Consumer Preferences Regarding Dairy Products." Nutrients 11, no. 10 (October 19, 2019): 2526. http://dx.doi.org/10.3390/nu11102526.
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Modern consumers are becoming increasingly aware of the perceived health benefits of food. As a result, they are in search of various types of information, for example, information on the packaging of food products that could confirm to what extent the purchased product will meet their expectations regarding the proper composition, that is, nutritional value, or perceived health values earlier mentioned. Furthermore, consumers increasingly seek new dairy products with additional health benefits and, therefore, it is essential to explore which attributes are important drivers of food choices and how producers can better respond to shifting consumer values and needs in each dairy product category. Therefore, the aims of our research was twofold: (1) To determine different segments of consumers based on their preferences towards food and nutrition, including opinion on new food products with a particular emphasis on a dairy market as well as (2) to study the importance of some statements related to nutrition presented on the yoghurt label with a precise focus on aspects of the increased and decreased content of some ingredients. The data were collected using a CAPI (Computer Assisted Personal Interview) survey on a sample of 489 adult Polish consumers. Respondents provided answers to questions and took part in a discrete choice-based experiment. The obtained data were analysed using the clustering method. The segmentation was performed using a hierarchical Ward’s method. As a result, four segments were identified: Quality-oriented, Involved, Quality Enthusiasts, and Neutral. The results indicated that in relation to the features that are important in the case of yoghurts, the following were indicated above all: Beneficial effects on health, its sensory values, as well as its availability on the market and production by traditional methods. Consumers belonging to Quality Enthusiasts seemed to be the most promising segment due to their openness to new products, as well as positive feedback on yoghurt. From the perspective of taking action on the food market, Involved may also be interesting, as it showed their openness to new products available on the food market. However, due to the relatively lower, compared to other segments, assessment on the beneficial effect of yoghurt on health, their taste, aroma, availability, as well as the importance of information on care for the proper method of breeding animals, this segment can pose a special challenge to entrepreneurs. Moreover, Involved seemed to be more demanding and critical towards some projects undertaken on the market by policy makers and marketing practitioners.
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Carzedda, Matteo, Gianluigi Gallenti, Stefania Troiano, Marta Cosmina, Francesco Marangon, Patrizia de Luca, Giovanna Pegan, and Federico Nassivera. "Consumer Preferences for Origin and Organic Attributes of Extra Virgin Olive Oil: A Choice Experiment in the Italian Market." Foods 10, no. 5 (May 2, 2021): 994. http://dx.doi.org/10.3390/foods10050994.
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The paper investigates Italian consumers’ behavior towards characteristics of extra virgin olive oil, in particular organic production methods and geographical origin. On the basis of the existing literature, the concepts of sustainability of food systems, diets, and the olive oil supply chain are analyzed. A choice experiment (CE), using a face-to-face questionnaire with over 1000 participants, was conducted to quantify the willingness to pay (WTP) for these two attributes. Findings show positive preference for origin attributes, while the organic attribute is not highly valued. The article also offers some perspectives on future research to improve the competitiveness and sustainability of the Italian olive oil supply chain.
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Ryan, Nikisha, Frank W. Abrahamsen, Briana Epps, Mary K. Mullenix, John Heath, Ron Smith, and Nar Gurung. "202 In vitro digestibility of various browse species selected by goats over the growing season." Journal of Animal Science 97, Supplement_1 (July 2019): 78–79. http://dx.doi.org/10.1093/jas/skz053.179.
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Abstract Goats naturally prefer to consume browse species given the choice. Browsing away from the ground may help avoid internal parasites; however, goats cannot consume more than 50% of their diet as browse due to the prevalence of toxins in the browse species. The objective of this project was to determine in vitro true digestibility (IVTD) of preferred browse species consumed by goats at Tuskegee University browsing demonstration site over the growing season. Three samples were collected from each of the 35 different browse species in April and July 2018. Samples consisted of leaves and edible twigs. Browse IVTD was determined according to the Van Soest et al. (1991) modification of the Tilley and Terry (1963) procedure using the Ankom Daisy II incubator system. Data were analyzed for the months of April and July utilizing the two-sample T-test of SYSTAT, Version 13. Browse IVTD values differed (Pteridium aquilinum (Brakenfern) to 94.7% in Phytolacca americana (pokeweed) while the July values ranged from 33.59% in Pteridium aquilinum to 88.5% for Morus rubra (Mulberry). Significant differences were also observed among browse species with regards to dry matter content. Dry matter content values ranged from 10.5 (Albizia julibrissin; White mimosa) to 81% (Prunus americana; American Plum) in April and 12.5 Phytolacca americana to 89% Pinus taeda (Loblolly Pine) in July. Results showed natural variability in IVTD of various browse species throughout the growing season. Future experiments will analyze additional nutritive value parameters such as ADF, NDF, total digestible nutrients, and lignin values over three collection times (April, July, and October). The experiment will be continued for two additional years to provide meaningful results.
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Richartz, Christoph, and Awudu Abdulai. "The role of information in consumer preferences for sustainable certified palm oil products in Germany." PLOS ONE 17, no. 7 (July 25, 2022): e0271198. http://dx.doi.org/10.1371/journal.pone.0271198.
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Food products are often subject to information asymmetries, which are commonly supposed to be reduced by labels and certifications. However, as the number of labels increases, consumers tend to get confused, bored or impatient and stop using them to make product choices. This study uses data from a discrete choice experiment, conducted in Germany, to analyze consumers’ preferences and willingness-to-pay (WTP) for sustainability indicators on products that contain palm oil as an ingredient. Since information is crucial to the assessment and awareness of, or attendance to, labels on consumer products, this study assesses the effect of factual information on preferences as well as attribute-processing strategies. We use a hybrid latent variable model that allows us to jointly examine the response to the stated choice component and the responses to attribute processing questions, thus capturing attribute non-attendance (ANA) to specific labels while controlling for heterogenous preferences. Our results reveal that the attribute ‘organic’ receives the highest monetary valuation in the overall sample as well as in the information intervention, and the no-information intervention groups. The results also show that providing additional information tends to change consumers’ non-attendance patterns as well as WTP values. In particular, the information intervention tends to increase consumers’ WTP and decreases their ANA for sustainability-indicating attributes. The findings suggest that the attribute ‘organic’ has the potential to be ranked highest across the entire latent variable structure, making it the most promising attribute for promoting sustainable palm oil use across consumer groups.
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Łukowski, Adrian, Marian J. Giertych, Dawid Adamczyk, Ewa Mąderek, and Piotr Karolewski. "Preference and Performance of the Pine-Tree Lappet Dendrolimus pini on Various Pine Species." Forests 12, no. 9 (September 16, 2021): 1261. http://dx.doi.org/10.3390/f12091261.
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Global commercial and recreational transport may lead to the unintentional invasion of insect species, which in turn may pose a threat to native organisms. In this study, we aimed to assess whether the economically important pest of Pinus sylvestris L., moth Dendrolimus pini L. (DP), is able to feed on nine other pine species, and how this will affect its survival, performance, growth, and development. We carried out food choice tests and a no-choice laboratory feeding experiment. We found that this insect mostly preferred its prime host, but also Pinus cembra L., Pinus contorta Douglas ex Loudon, Pinus nigra J.F.Arnold, and Pinus ponderosa Douglas ex C.Lawson. The performance test revealed a host-specific response of DP to the host plant. This response was manifested in a large variation in body mass as well as in a decrease or increase in life-history traits, such as fecundity, and wing morphology parameters. However, the larvae’s choice of particular hosts corresponded to the results of the performance test. Larvae more willingly selected food allowing better results in their performance. Larvae achieved better values of growth and development when fed on European and North American pine species or on species with two- and three-needle fascicles. In addition, attractants and repellents in needles of different pine species were chemically analyzed. Variations in the secondary metabolite composition as well as the specific leaf area of different pine species effectively explained the results found in the insects, but the content of sugars and nitrogen remains to be elucidated. We speculate that DP poses a serious threat to large areas of pine forests, if transferred, as it can survive and develop on many economically important tree species in North America and Europe.
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Dadzie, Samuel Kwesi Ndzebah, Isaac Mbroh, William Ghartey, and Albert O. Mensah. "Economic valuation of consumers’ preferences for bush yam attributes: Implications for breeding commercial crop in Ghana." Journal of Business and Enterprise Development (JOBED) 10 (June 1, 2022): 1–29. http://dx.doi.org/10.47963/jobed.v10i.887.
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Bush yam has been underutilized and underrated for long due to its undesirable attributes or traits, hence the commercial and food security potentials of the crop have been downgraded and unexploited. This paper, therefore, explored the Ghanaian bush yam consumers’ decisionmaking behaviour towards the crop’s cultivar selection and the values they place on its diverse attributes. With the aim of examining consumers’ preference and willingness to pay for bush yam, we designed a choice experiment which was implemented through a cross-sectional survey, involving 390 bush yam consumers in the Western-North, Eastern and Central Cocoa Regions of Ghana. We employed Conditional logit to model consumers’ preference behaviour for bush yam attributes from the choice experiment and, subsequently, computed their willingness-to-pay for each attribute, following the Lancaster consumer theory, using the ratios of specific product attributes and cost parameter. Our estimates of consumers’ preferences for bush yam attribute revealed a highly significant preference for bigger tuber size, no colour change and sweet taste attributes. Age, education, marital status, and years of consumption were found to have influenced consumers’ preferences for bush yam attributes. Furthermore, we found that bush yam consumers are willing to pay extra price value for improvement in tuber size, colour change and taste to meet their indicated preferences. We, therefore, recommend that, for breeding programmes to be more effective and sustainable towards developing a commercial cultivar, breeding institutions and policy makers should focus on the preferred attributes as indicated by consumers for a successful future commercialization of bush yam in the country
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Birol, Ekin, Dorene Asare-Marfo, Bhushana Karandikar, Devesh Roy, and Michael Tedla Diressie. "Investigating demand for biofortified seeds in developing countries." Journal of Agribusiness in Developing and Emerging Economies 5, no. 1 (May 18, 2015): 24–43. http://dx.doi.org/10.1108/jadee-02-2014-0008.
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Purpose – The purpose of this paper is to explore farmer acceptance of a biofortified staple food crop in a developing country prior to its commercialization. The paper focuses on the hypothetical introduction of a high-iron pearl millet variety in Maharashtra, India, where pearl millet is among the most important staple crops. Design/methodology/approach – A choice experiment is used to investigate farmer preferences for and trade-offs among various production and consumption attributes of pearl millet. The key pearl millet attributes studied include days it takes pearl millet to mature, color of the roti (flat bread) the grain produces, the presence of high-iron content (nutritional attribute), and the price of the pearl millet seed. Choice data come from 630 pearl millet-producing households from three purposefully selected districts of Maharashtra. A latent class model is used to investigate the heterogeneity in farmers’ preferences for pearl millet attributes and to profile farmers who are more or less likely to choose high-iron varieties of pearl millet. Findings – The results reveal that there are three distinct segments in the sample, and there is significant heterogeneity in farmer preferences across these segments. High-iron pearl millet is valued the most by larger households that produce mainly for household consumption and currently have lower quality diets. Households that mainly produce for market sales, on the other hand, derive lower benefits from consumption characteristics such as color and nutrition. Research limitations/implications – The main limitation of the study is that it uses a stated preference choice experiment method, which suffers from hypothetical bias. At the time of implementing this study biofortified high-iron pearl millet varieties were not yet developed, therefore the authors could not have implemented revealed preference elicitation methods with real products and payment. Originality/value – The method used (stated preference choice experiment method) is commonly used to value non-market goods such as environmental goods and products that are not yet in the market. It’s application to agriculture and in developing countries is increasing. As far as the authors know this is the first choice experiment implemented to investigate farmer/consumer preferences for biofortified crops. The study presents valuable information for development and delivery of biofortified crops for reducing micronutrient deficiencies.
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Garcia-Yi, Jaqueline. "Willingness to pay for organic and fairtrade certified yellow chili peppers." British Food Journal 117, no. 2 (February 2, 2015): 929–42. http://dx.doi.org/10.1108/bfj-11-2013-0321.
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Purpose – The purpose of this paper is to evaluate the consumers’ preferences in middle- and high-income districts in Lima for three organic and Fairtrade certification attributes: environmental protection, production without pesticides, and improvement in the quality of life of farmers. Yellow chili pepper was used as case study. Design/methodology/approach – A survey of 183 households was conducted among the population located in middle and high income districts in Lima, because of their higher ability to pay. Choice experiment data were analysed using random parameter logit models (RPM) with and without interaction effects. Findings – The results suggest that there is a statistically significant willingness to pay for organic and Fairtrade certification attributes (ranging from S/4.4 to 9.3). The results also indicate that the higher the income the higher the willingness to pay for yellow chili peppers grown without pesticides. Originality/value – The results provide support that willingness to pay values for particular food certification attributes are statistically significantly associated with the ability to pay even among the middle and high income population in Lima. This positive association between willingness to pay and income is not always present among the general population in developed countries. As such, the demand for certified products would be especially associated with the overall economic growth of the emerging and developing country under consideration.
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Zaffou, Madiha, and Benjamin L. Campbell. "Consumer Preference and Willingness to Pay for Azaleas: Effect of State Labeling and Various Types of Retail Outlets." HortScience 51, no. 8 (August 2016): 1026–30. http://dx.doi.org/10.21273/hortsci.51.8.1026.
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Over the last decade, there has been a move by many consumers to purchase locally grown products. Many studies have focused on food with limited studies examining plants. Using an online survey of Connecticut residents in conjunction with a choice experiment, we examine the impact of various attributes (e.g., local labeling, retail outlet, color, bloom, and price) on preference and willingness to pay (WTP) for azaleas. Results of the latent class model (LCM) indicate that only one of the latent classes, ≈43% of the sample, valued local labeling. Furthermore, the same class that valued local also preferred a nursery/greenhouse outlet over a home improvement center/mass merchandiser. Recommendations for the different retail outlets are given based on the results.
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Xu, Pei, Junling Zhou, and Srini Konduru. "Chinese Consumers’ Willingness to Pay for Almonds as a Healthy Snack." International Journal of Business and Management 14, no. 3 (February 19, 2019): 35. http://dx.doi.org/10.5539/ijbm.v14n3p35.
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This study uses 360 choice experiment data gathered in five large Chinese cities of Beijing, Shanghai, Guangzhou, Wuhan and Kunming during the traditional Chinese holidays of spring 2016 to analyze respondents’ acceptance of almonds as a healthy snack food. The purchasing impact of Country of origin (COO), price, organic, brand, freshness, taste and consumer specific profile of education and their food expenses were examined. Mixed logit model was applied and the results show that: 1) there existed positive purchase attitudes toward the health featured almond snacks; 2) California imported almonds were preferred to the domestic Chinese almonds and the imported almonds were valued higher; 3) when purchase almonds, Chinese respondents were found to be unlikely price sensitive; and 4) their purchase decision was found to be unlikely affected by organic, crop freshness and the decision was made without the influence of respondents’ educational background.
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Zeng, Qingfei, Erik Jeppesen, Xiaohong Gu, Zhigang Mao, and Huihui Chen. "Cannibalism and Habitat Selection of Cultured Chinese Mitten Crab: Effects of Submerged Aquatic Vegetation with Different Nutritional and Refuge Values." Water 10, no. 11 (October 29, 2018): 1542. http://dx.doi.org/10.3390/w10111542.
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We examined the food preference of Chinese mitten crabs, Eriocheir sinensis (H. Milne Edwards, 1853), under food shortage, habitat choice in the presence of predators, and cannibalistic behavior by comparing their response to the popular culture plant Elodea nuttallii and the structurally more complex Myriophyllum verticillatum L. in a series of mesocosm experiments. Mitten crabs were found to consume and thus reduce the biomass of Elodea, whereas no negative impact on Myriophyllum biomass was recorded. In the absence of adult crabs, juveniles preferred to settle in Elodea habitats (appearance frequency among the plants: 64.2 ± 5.9%) but selected for Myriophyllum instead when adult crabs were present (appearance frequency among the plants: 59.5 ± 4.9%). The mortality rate of mitten crabs in the absence of plant shelter was higher under food shortage, primarily due to cannibalism. The proportion of molting crabs dying in the structurally more complex Myriophyllum habitats was significantly lower than in the less complex Elodea habitats, indicating that Myriophyllum provides better protection from cannibalistic behavior, likely due to its structurally more complex canopy. Stable isotope analyses of crab samples revealed a trophic shift in both δ13C and δ15N (Δδ13C: 2.2–4.0‰; Δδ15N: 1.5–2.8‰) during the experimental period. Significant positive correlations between body mass and δ13C and δ15N were recorded, suggesting that cannibalistic feeding might further increase crab growth and lead to ontogenetic increases in trophic position with increasing size. Our study overall demonstrates that a combination of submerged aquatic vegetation functioning as a highly suitable food with other less palatable plant species acting as efficient refuges against predators may be the optimal method of plant stocking in mitten crab aquacultures to ensure both high crab growth and a high survival rate.
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Hong, Xinyi, Chenguang Li, Liming Wang, Mansi Wang, Simona Grasso, and Frank J. Monahan. "Consumer Preferences for Processed Meat Reformulation Strategies: A Prototype for Sensory Evaluation Combined with a Choice-Based Conjoint Experiment." Agriculture 13, no. 2 (January 18, 2023): 234. http://dx.doi.org/10.3390/agriculture13020234.
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Consumption trends demand healthier meat products and require research into reformulation strategies. Ambiguities in consumer preferences for two processed meat reformulation strategies (i.e., ingredient “reduction” and nutrient “addition”) were investigated. Using physical prototypes of omega-3-enriched pork sausages and sensory evaluation to reduce hypothetical bias, followed by a choice-based conjoint experiment, results suggested that consumers valued both “addition” and “reduction” reformulation strategies, and consumers’ willingness-to-pay (WTP) premiums were the highest for omega-3 addition, followed by fat reduction, and were lowest for salt reduction. Moreover, WTP was influenced by sensory preferences and was positively correlated with sensory liking levels. Providing health-related information improved consumers’ sensory perceptions of omega-3-enriched sausages. Findings imply that reformulated healthier meat products are acceptable to consumers. Moreover, to enhance consumers’ valuation on new launches of healthier processed meat products, meat manufacturers should inform consumers of health-related reformulation information, provide consumers with opportunities to taste newly developed healthier processed meat products, and continuously optimize consumers’ sensory experience.
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Enthoven, Laura, and Goedele Van den Broeck. "Promoting Food Safety in Local Value Chains: The Case of Vegetables in Vietnam." Sustainability 13, no. 12 (June 18, 2021): 6902. http://dx.doi.org/10.3390/su13126902.
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Background: Food quality and safety concerns in low- and middle-income countries are often addressed using stringent standards and formal contracts between farmers and buyers. Many studies have investigated the welfare implications of these control mechanisms for small-scale farmers in modern value chains, including exports and supermarkets. Conversely, few studies have focused on the potential of certification and contracts to tackle food safety issues within local traditional value chains. Methods: This study uses a discrete choice experiment to explore the preferences of vegetable farmers (n = 301) in northern Vietnam for different types of certification schemes–including third-party certification and participatory guarantee systems–and contracts. Results: Farmers are willing to accept a 49% lower price per kilogram for their vegetables to enter into a contract with a buyer, provided that pesticide use restrictions are feasible and the buyer is fully committed and trustworthy. However, they are strongly averse to organic farming, as they would require a 40% premium per kilogram to produce organically. They would also request a 21% premium to accept selling to an unknown buyer. Farmers highly value contracts that entail large purchase quantities, long duration and pesticide provision. Although the estimated willingness-to-accept values may seem very large, they make sense in the context of highly perishable produce. Conclusion: Our findings urge both policy makers and researchers to not only focus on modern value chains but also on local traditional value chains to tackle food safety issues in low- and middle-income countries, as we show that farmers are willing to produce safe vegetables for the local market when trading with buyers under beneficial conditions.
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Stiletto, Alice, and Samuele Trestini. "Is it really a piece of cake to label Geographical Indications with the Nutri-Score? Consumers’ behaviour and policy implications." PLOS ONE 17, no. 11 (November 17, 2022): e0277048. http://dx.doi.org/10.1371/journal.pone.0277048.
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To improve the dietary habits of the population, the EU, within the Farm to Fork strategy (F2F), is strongly supporting the Nutri-Score (NS) Front Of Pack (FOP) label. Under the NS system, Geographical Indications (GIs) are generally scored as “unhealthy” food, given the predominance of products of animal origin among GIs which are, notoriously, high-fat products. This study aims to determine the impact of the NS label on consumers’ preferences for two Protected Designation of Origin (PDO) cheeses, in comparison with generic ones. A Discrete Choice Experiment (DCE) was conducted on 600 Italian consumers through the estimation of a Random Parameter Logit model. Results highlighted that Italian consumers are generally not familiar with the NS and perceive it as a positive characteristic of the product, even if it is signalling an unhealthy choice (D score). However, consumers aware of the Nutri-Score meaning are willing to pay less to buy a product considered “unhealthy” according to this system. Furthermore, we found that consumers who already knew the NS system have homogeneous behaviours in rejecting the product, independently of the association with a PDO certification. This result has important implications on the agri-food sector. If the Nutri-Score becomes mandatory in the EU, consumers might refuse many GIs due to their negative Nutri-Score values. However, the quality of these products is recognized and protected worldwide. In this vein, the GI policy could be questioned by the F2F strategy: both of them aims to reduce information asymmetry producing, at the same time, contrasting results. Within the Geographical Indication policy, the PDO and PGI goods are protected for their quality attributes, which are strictly linked to their geographical origin of the products and traditional know-how. However, the EU adoption of the Nutri-Score could damage these products, reducing their perceived quality/value.
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Meyerding, Stephan, Annemone Kürzdörfer, and Birgit Gassler. "Consumer Preferences for Superfood Ingredients—the Case of Bread in Germany." Sustainability 10, no. 12 (December 7, 2018): 4667. http://dx.doi.org/10.3390/su10124667.
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Although there is no legal definition of the word ‘superfood’, in recent years exotic foods and ingredients have become popular in German food retailers. The aim of the study was to determine consumer preferences for superfood ingredients in different types of bread; to accomplish this, a choice experiment was set up with a representative sample of 503 German consumers. Respondents had to choose between products with varying attributes such as type of bread, superfood ingredient, nutritional information, production method, durability, and price. The results indicate that consumers value bread that serves a functional purpose through superfood ingredients such as linseed or chia. Using latent class segmentation, the respondents were divided into four segments, of which three groups valued bread with superfood ingredients. All in all, the type of bread is the most important factor when choosing a bread. Further market research could take into account different types of superfoods (processed/unprocessed), as well as regional deviations in Germany and the EU member states to analyze differences regarding the market potential of staple foods such as bread that serve a functional purpose through superfood ingredients.
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Tait, Peter R., Caroline Saunders, and Meike Guenther. "Valuing Preferences for Environmental Sustainability in Fruit Production by United Kingdom and Japanese Consumers." Journal of Food Research 4, no. 3 (March 9, 2015): 46. http://dx.doi.org/10.5539/jfr.v4n3p46.
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<p>Reduction of carbon intensity of high volume grocery products is potentially a major contributor in meeting climate targets. In a choice experiment concerning fruit purchase decisions in the United Kingdom and Japan, this study estimates consumer willingness to pay for sustainability attributes of production alongside vitamin content, including water use efficiency, waste and packaging, and carbon emissions. Results indicate that sustainability attributes significantly influence consumers’ fruit purchase decisions. Preferences are found to be very similar between countries, with reduction of carbon emissions the most valued sustainability attribute by both UK and Japanese consumers and increased vitamin content the least. This study’s findings provide implications for carbon emission labeling development in the context of international food supply chains, and primary sector strategy encouraging initiatives to improve environmental performance domestically.</p>
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Wang, Keqiang, Hongmei Liu, Wuyang Hu, and Linda Cox. "Using online self-assessment tool to improve conjoint analysis." Internet Research 26, no. 3 (June 6, 2016): 644–60. http://dx.doi.org/10.1108/intr-04-2014-0105.
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Purpose – Dolphin excursions have become increasingly popular worldwide. Many past studies assessing the value of dolphin excursions use choice-based methods such as the conjoint analysis. However, this method is often criticized as being hypothetical. The purpose of this paper is to describe a relatively low cost but effective approach to enhance understanding of consumer preference obtained by conjoint analysis. The method relies heavily on using internet-based survey tools. Design/methodology/approach – Enabled by an online tool, individuals are asked to self-explicate their preferred alternatives using the same attributes as are found in the conjoint design. The difference between the self-constructed, preferred alternatives and those offered in conjoint experiment are incorporated into choice models. Unlike previous research where only rough estimates can be provided, the proposed method allows precise capture of respondents’ preferred alternative through the automated online survey design. Findings – Results show that although the extra effort involved in data collection is small, the gain in model fit, choice interpretation, and the value (welfare) estimation is sizeable. Evidence indicates that consumers would be willing to pay up to $50 more for adventurous excursions and guarantees that they will interact with dolphins could worth up to $70 per trip. The approach presented in this paper can also serve as a method to test for preference consistency. Originality/value – This study is the first using an online survey to assess values associated with dolphin excursion. It describes the benefit of involving online tools to enhance modeling and interpretation of consumer behavior. Applications of internet-based surveys on household consumer products are abundant (such as food and electronics) but this study offers a much less discussed application in environmental service.
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Cubero Dudinskaya, Emilia, Simona Naspetti, Georgios Arsenos, Emmanuelle Caramelle-Holtz, Terhi Latvala, Daniel Martin-Collado, Stefano Orsini, Emel Ozturk, and Raffaele Zanoli. "European Consumers’ Willingness to Pay for Red Meat Labelling Attributes." Animals 11, no. 2 (February 20, 2021): 556. http://dx.doi.org/10.3390/ani11020556.
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Food consumption in Europe is changing. Red meat consumption has been steadily decreasing in the past decades. The rising interest of consumers for healthier and more sustainable meat products provides red meat producers with the opportunity to differentiate their offers by ecolabels, origin and health claims. This international study analyses the European consumer preferences for red meat (beef, lamb and goat) in seven countries: Finland, France, Greece, Italy, Spain, Turkey and the United Kingdom. Through a choice experiment, 2900 responses were collected. Mixed multinomial logit models were estimated to identify heterogeneous preferences among consumers at the country level. The results indicate substantial differences between the most relevant attributes for the average consumer, as well as their willingness to pay for them in each country. Nevertheless, national origin and organic labels were highly valued in most countries.
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Ramanathan, Ranjith, Andrew M. Cassens, Laura Yoder, and Gretchen G. Mafi. "110 Metmyoglobin reducing activity and oxygen consumption properties of atypical dark-cutting beef." Journal of Animal Science 98, Supplement_2 (November 1, 2020): 22. http://dx.doi.org/10.1093/jas/skz397.049.
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Abstract Deviation from characteristic bright-red color during grading leads to discounted carcass price and value. Dark-cutting carcasses are examples of color deviation due to high-pH. However, atypical dark-cutters are not discounted at grading but have a dark color compared to normal-pH beef. Limited knowledge is currently available on the biochemical properties of atypical dark cutting beef compared with normal-pH beef. Therefore, the objective of the study was to determine metmyoglobin reducing activity and oxygen consumption of atypical dark-cutting beef. Strip loins from atypical dark-cutting (ADC; selected based on HunterLab L* values and pH less than 5.8 and not discounted by grader) and USDA Low Choice (C) carcasses were selected from a commercial beef processing plant and transported to the Food and Agricultural Products Center in Stillwater, Oklahoma. pH, color, oxygen consumption, and metmyoglobin reducing activity of atypical dark cutters and normal pH loins were determined on d3 postmortem. The surface color was determined using a HunterLab Miniscan spectrophotometer. Reflectance-based methods using K/S ratios were utilized to determine oxygen consumption and metmyoglobin reducing activity. The data were analyzed using the Mixed Procedure of SAS and the experiment was replicated 10 times (n = 10). There were no differences in initial pH (C = 5.46 and ADC = 5.6 atypical dark-cutter; P = 0.05) between normal-pH and atypical dark cutters. However, atypical dark cutters had lower lightness (L* values; C = 44.2 and ADC = 38.4), redness (a* values; C = 28.6 and ADC = 25.2), and red intensity (chroma; C = 40.2 and ADC = 36.4) compared with normal-pH. Further, atypical dark cutters had greater (P < 0.05) oxygen consumption and metmyoglobin reducing activity than normal-pH. The results suggest that atypical dark cutters and normal-pH beef have different biochemical properties.
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Xie, Yongshou, and Murray B. Isman. "ANTIFEEDANT AND GROWTH INHIBITORY EFFECTS OF TALL OIL AND DERIVATIVES AGAINST THE VARIEGATED CUTWORM, PERIDROMA SAUCIA HÜBNER (LEPIDOPTERA: NOCTUIDAE)." Canadian Entomologist 124, no. 5 (October 1992): 861–69. http://dx.doi.org/10.4039/ent124861-5.
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AbstractCrude tall oil and two of its derivatives were assessed for antifeedant and growth inhibitory effects, via incorporation into an artificial diet, in the variegated cutworm (Peridroma saucia Hübner). The substances tested are both toxic to neonate P. saucia and inhibitory to larval growth. The dietary LC50 (lethal concentration for 50% mortality) values are 4.3, 4.7, and 5.3% fresh weight for depitched tall oil (DTO), crude tall oil (CTO), and tall oil pitch (TOP), respectively. These materials significantly reduced growth, feeding, and dietary utilization by first-, second-, third-, and fourth-instar larvae in chronic larval growth bioassays, choice and no-choice feeding tests, and nutritional experiments. The EC50s (effective concentration to inhibit growth by 50% relative to controls) of DTO, CTO, and TOP were 1.4, 2.0, and ≥2.4%, respectively, when first-instar larvae fed on treated diets for 10 days. DTO significantly reduced both growth and consumption rates with corresponding reduction in the efficiency of conversion of food (i.e. nutritional efficiency), suggesting that both antifeedant and toxic effects are involved in larval growth inhibition. DTO and CTO are consistently more biologically active than TOP. Our results suggest that an environmentally sound, low cost natural pest control agent may be developed based on tall oil.
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Tangkham, Wannee, Duyen Bui, and Frederick LeMieux. "Effect of Hibicus sabdariffa on the Nutritional and Sensory Properties of Novel Naem Product." Journal of Food Research 12, no. 1 (November 8, 2022): 36. http://dx.doi.org/10.5539/jfr.v12n1p36.
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Naem is a traditional Asian fermented sausage made from the mixture of raw meat, cooked rice, garlic, salt, sugar, spices, and sodium nitrite. With consumers more concerned with healthy food choices, Hibiscus sabdariffa (HS) can be used as substitute for sodium nitrite in Naem preparation. Therefore, the objective of this study was to evaluate the effects of HS on the sensory, quality, and physicochemical analyses of Naem products. Four concentrations of HS were evaluated in this experiment: 1) 0%, 2) 1%, 3) 3% and 4) 5% HS. Treatments were analyzed for sensory evaluation by using a 9-point hedonic scale (trained panelists = 38). Physicochemical characteristics were evaluated for color (L*, a*, and b* values), pH, water activity, moisture (%), ash content, and lipid stability (TBARS). In addition, nutrition profiles, lactic acid bacteria, aerobic plate counts, Escherichia coli, and Listeria spp. were completed. SPSS with one-way ANOVA was used to evaluate any significant differences with p<0.05. The sensory evaluation revealed that Naem prepared with 3% HS had the highest overall acceptance scores (5.76), flavor (5.81), and taste (5.66). In addition, fermented Naem with 3% HS showed the highest scores of acceptability (92.2%), purchase intent (71.1%), and lactic acid bacteria counts (5.41 log CFU/g). The initial pH values, water activity, moisture (%), and ash content in this experiment ranged from 5.44-5.57, 0.93-0.94, 63.17-64.94%, and 1.51-1.74%, respectively. There was a significant (p<0.05) on color after 7 days storage at 3°C. Specifically, a* values were decreased in all treatments. The control treatment obtained the highest TBARS values (0.83 mg MDA/kg). No E. coli or Listeria spp. were detected. The results of this study indicate that Hibiscus sabdariffa can be used as a natural spice for Naem products which may help the meat industry increase market share through this innovative product.
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Villaverde, María S., Mariano Menghini, Rodrigo D. Bravo, María D. Chamadoira, Marcela F. Martínez, and Hugo M. Arelovich. "PSIII-A-10 Effect of Grain Type and wet-Aging Time on Lamb Meat." Journal of Animal Science 100, Supplement_3 (September 21, 2022): 300–301. http://dx.doi.org/10.1093/jas/skac247.547.
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Abstract Visual appearance is critical for the consumer perception of meat quality. Color, as well as juiciness are key factors in determining consumer choice. The objective of this study was to evaluate the effect of grain type and different wet-aging periods on lamb meat. Eighteen castrated Merino x Corriedale lambs (± 40 kg) were randomly assigned to three dietary treatments: 60% corn grain (CG), 60% oats grain (OG) or all fescue hay (Control); diets were isonitrogenous (13% CP). After slaughter, pieces of Longissimus thoracis muscle from each animal were aged during 1, 4, 8 and 16 d. Treatments were arranged as a 3x4 factorial experiment, and color and water-holding variables were measured. No interactions were found (p > 0.05) between type of grain and aging time. Meat from CG showed the highest values for lightness, redness and yellowness (p= 0.0240, 0.0119, 0.0077, respectively), while meat from OG had the lowest values for redness and yellowness. Expressible juice was lowest (p= 0.0307) for Control, intermediate for CG and higher for OG. Meat cooking loss (p= 0.0157) resulted highest for Control, intermediate for OG and lowest for CG. Cooking loss, drip loss (48h) and expressible juice showed differences among aging periods (p= 0.002, 0.0001, 0.0015, respectively); the highest loss was found for 1d-aging, but no differences were detected for the other aging periods. The effect of aging period was greater than type of grain for cooking loss (F: 7.82, 4.48) and expressible juice (F: 5.88, 3.71) respectively. Purge-thaw loss showed no differences for diet type (p > 0.16) or aging period (p > 0.11). A more intense color developed by CG than OG might favor consumer perception of meat quality. Additionally, water-loss seems to be independent of these diets, showing that a longer aging period would be more relevant to get juicier lamb meat.
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De Vries, Eline L. E., and Bob M. Fennis. "Go local or go global: how local brands promote buying impulsivity." International Marketing Review 37, no. 1 (July 19, 2019): 1–28. http://dx.doi.org/10.1108/imr-10-2018-0292.
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Purpose Using food brands as a case in point, the purpose of this paper is to examine the relationship between a local vs global brand positioning strategy and buying impulsivity, as well as the mediating role of construal level. The findings add a psychological argument to the array of reasons for firms to opt for a local instead of a global brand positioning strategy: local food brands promote higher levels of buying impulsivity than global brands by lowering consumers’ level of construal. Design/methodology/approach Five experiments use student and nonstudent samples, different construal level indices and generic and brand-specific buying impulsivity measures to test the hypotheses. Findings Local food brands promote higher levels of buying impulsivity than global brands by lowering consumers’ level of construal. Because local brands are proximal to consumers’ lifestyles, values, preferences and behaviors, they decrease the psychological distance between the brand and the consumer, compared with global brands. The smaller psychological distance lowers consumers’ construal level and renders the immediate, concrete, appetitive attributes of the product more salient, thus making consumers more prone to impulsively buy a local brand than a global one. Practical implications For the choice between a global or local brand positioning strategy, this paper argues in favor of the latter. Local (food) branding is a concrete brand positioning mechanism that can influence and benefit from consumers’ buying impulsivity. Originality/value The research reveals heretofore unknown but important implications of local vs global brand positioning strategies for consumers’ construal level and buying impulsivity.
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Abbas, Hasnain, Hafeez Ullah, Xi Gong, Mengyin Jiang, Narmeen Faiz, and Lindu Zhao. "Sustainable Market Environment and Consumer Confidence in Food Safety in China After COVID-19: Urban Consumer Perspectives." Economics and Finance Letters 9, no. 2 (July 18, 2022): 139–56. http://dx.doi.org/10.18488/29.v9i2.3064.
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Previously, several food safety incidents have lowered Chinese consumer confidence regarding the purchase of meat and domestically-produced infant formulas (DIF). Recently, the COVID-19 pandemic was caused by a food safety issue, and it is, therefore, important to investigate sustainable consumer confidence and its influence on consumption behavior by first estimating consumer confidence in meat and DIF products. The purpose of this study is thus to estimate the sustainable market environment and Chinese consumer confidence behavior post-COVID-19 regarding the purchase of meat and DIF products by applying a choice experiment. An online survey was conducted with 704 consumers residing in Nanjing. The survey obtained information on the features of meat and DIF products that affected consumer purchase consideration and determined the perceived estimated value of the product (price 15.24%, quality certification 31.57%, organic 23.69%, traceability 18.51%). These findings provide insight into consumer perceived premium pay behavior concerning the value estimation of product features according to the market environment (price 191.6 CNY, quality certification 285.3 CNY, organic product 189.1 CNY, and traceability 143.7 CNY). Chinese consumers’ low confidence in the safety of meat and DIF products appears less sustainable. Quality certification is the product feature that is most valued, followed by organic origin and production-to-consumption traceability. Apart from these, price is seen as an indication of high quality by consumers with low confidence, which results in a positive image of DIF products. In addition, consumer preferences for production-to-consumption traceability are highly affected by consumer confidence.
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Kallas, Z., J. A. Gómez-Limón, M. Arriaza, and O. Nekhay. "Análisis de la demanda de bienes y servicios no comerciales procedentes de la actividad agraria: El caso del olivar de montaña andaluz." Economía Agraria y Recursos Naturales 6, no. 11 (October 18, 2011): 49. http://dx.doi.org/10.7201/earn.2006.11.03.
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Agricultural multifunctionality is the recognition of the joint exercise of economic, environmental and social functions by this sector. In order to make this concept operative for the design of public policies, it is necessary to estimate the social demand for such functions. The main objective of this article is to present an empirical application in this line. For this purpose we have taken the agricultural system of mountain olive groves in Andalusia (Southern Spain) at risk of abandonment after the decoupling of the EU subsidies as a case study. The economic valuation technique used is the Choice Experiment. According to the results, there is a different contribution of each attribute to the improvement of the Society level of utility. Thus, and taking into account its WTP for each attribute, keeping rural population in their villages and fighting soil erosion seem to be the most valued functions by Andalusian citizens. It follows the improvement of the visual quality of the rural landscapes and the reduction of food residuals. Finally, although the results suggest a significant demand for the different functions, this demand is heterogeneous, depending on the socio-economic characteristics of the individuals.
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Grandi, Benedetta, Maria Grazia Cardinali, and Silvia Bellini. "How to communicate healthy products inside grocery stores." British Food Journal 121, no. 11 (October 24, 2019): 2637–50. http://dx.doi.org/10.1108/bfj-01-2019-0047.
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Purpose The purpose of this paper is to assess the importance of nutritional information in the selection of healthy food products and test the effects of different communication stimuli on people with different levels of self-control (NFC used as a proxy). Specifically, the authors posit that easy-to-process and intuitive nutritional information can lead to a substantial change in the shopping behaviour. Furthermore, this work wants to test the effect on behaviours, emotions and judgements of two different communication signs (stars and silhouettes) in the promotion of healthy food products inside grocery stores. Design/methodology/approach After the development of a new nutritional display, the authors identified two different communication stimuli (stars and silhouettes) in order to test their impact on emotions evoked, judgements and behaviours. First, a pre-test was conducted using neuro-marketing tools (Face Reader) to detect the emotions aroused by the communications and then a main online between-subjects experiment involving 222 participants was carried out to understand the impact on choices and attitudes. Data were analysed using SPSS. Findings Results showed that communication plays a key role in helping customers choosing healthier products. Concerning the different communication stimuli, the authors found a significant difference in the emotion evoked by the different signs used. This difference translates into a judgemental change but not necessarily into a behavioural one. Originality/value To the authors’ knowledge, previous researchers have focused their attention only on the nutritional values communicated at a product level through different product labels, while nobody has tried to implement and test a category/segment level communication strategy.
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Bren, Angelica, Yury Denisenko, Evgeniya Prazdnova, Mariya Mazanko, Andrey Gorovtsov, Vladimir Chistyakov, Viktor Pakhomov, Dmitry Rudoy, and Anastasiya Olshevskaya. "Development of Synbiotic Preparations That Restore the Properties of Cattle Feed Affected by Toxin-Forming Micromycetes." Agriculture 13, no. 3 (February 22, 2023): 523. http://dx.doi.org/10.3390/agriculture13030523.
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A synbiotic preparation based on two strains of B. licheniformis was developed to reduce the harmful effects of mycotoxins in postharvest products used for cattle feed. The genomes of these strains were sequenced to analyze their potential for producing bioactive secondary metabolites. An optimal substrate was selected from the variety of plant substrates, with soybeans being identified as the optimal choice. Based on the results of experiments conducted on experimental animals for a month, the introduction of a synbiotic preparation leveled the negative effect of mycotoxins on weight gain in heifer calves, bringing it to the level of the control groups. There was also a decrease in the level of alkaline phosphatase in serum to normal values, which may indicate the probiotic effects of the preparation, not associated with the elimination of the effect of mycotoxins. The activity of these strains against mycotoxins correlates with the presence of lactonase genes in their genomes. Antimicrobial and bioactive metabolites, such as lichenicidin and lichenisin synthesized by strains CL 33 and CL 56, also seem to contribute to the probiotic effect. The results of the study open up prospects for the creation of new synbiotic preparations to fight contamination with mycotoxins.
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Zhang, Lei, Fucai Wang, Zenghui Gao, Shuangshuang Gao, and Chenghang Li. "Research on the Stationarity of Hexapod Robot Posture Adjustment." Sensors 20, no. 10 (May 18, 2020): 2859. http://dx.doi.org/10.3390/s20102859.
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This paper proposes a smooth adjustment method for the instability problem that occurs during the start and stop of a multi-footed robot during attitude change. First, kinematics analysis is used to establish the mapping relationship between the joint angles of the robot support legs and the body posture. The leg joint angle is a known quantity that can be measured accurately and in real time. Therefore, when the position of the foot end of the support leg is unchanged, a unique set of joint angles can be obtained with the change of body posture at a certain moment. Based on the designed mapping model, the smooth adjustment of the posture can be achieved by the smooth adjustment of the support legs. Second, a constraint index that satisfies the requirements of the robot’s steady adjustment of the robot is given. The S-curve acceleration/deceleration method is used to plan the body’s attitude angle transformation curve, and then the mapping control relationship is used to obtain the control trajectory requirements of the joint to achieve smooth adjustment. In addition, this paper also gives a simple choice and motion control method for the redundancy problem caused by the number of support legs of a multi-footed robot when the attitude is changed. The simulation and prototype experiments verify and analyze the proposed method. The results of comparative experiments show that the posture adjustment method proposed in this paper has continuous acceleration without breakpoints, the speed changes gently during the start and stop phases of the attitude transformation, and there is no sudden change in the entire process, which improves the consistency of the actual values of the attitude planning curve with the target values. The physical prototype experiment shows that the maximum deviation between the actual value of the attitude angular velocity and the target value changes from 62.5% to 5.5%, and the degree of fit increases by 57.0%. Therefore, this study solves the problem of the instability of the fuselage when the robot changes its attitude, and it provides an important reference for the multi-footed robot to improve the terrain adaptability.
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Tan, A., A. Jimeno, I. Garrido-Laguna, M. Uson, E. De Oliveira, A. Wilson, B. Rubio-Viqueira, N. V. Rajeshkumar, and M. Hidalgo. "Use of amolecular mimicry approach to identify effective agents in pancreatic cancer." Journal of Clinical Oncology 27, no. 15_suppl (May 20, 2009): 4603. http://dx.doi.org/10.1200/jco.2009.27.15_suppl.4603.
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4603 Background: We proposed a molecular mimicry approach (prêt-à-porter), based on pathway-expression signatures that systematically connect a query case with the most similar profile from a reference profile database and extrapolates the most effective drug for personalized medicine. Here we report the pre-clinical and clinical validation of this concept in pancreatic cancer treatment. Methods: Baseline gene expression profiles of 24 patients that received gemcitabine as adjuvant chemotherapy were collected. A patient is defined as sensitive and resistant to gemcitabine if the disease free survival (DFS) is more and less than 300 days, respectively. We also performed a small scale pre-clinical study on comparing patient-derived xenografts refractory to gemcitabine in a second-line treatment of prêt-à-porter choice of drugs vs. one-size-fits-all choice of drug (erlotinib). Four gemcitabine resistant xenografts were randomly assigned into control, erlotinib and the prêt-à-porter choice of drug groups. Tumor growth inhibition values (TGI) were calculated at the end of the experiment. Results: Using the molecular mimcry concept, where a patient is connected to a sensitive cell line, s/he will be predicted as sensitive to gemcitabine and vice versa. The prêt-à-porter achieved an overall prediction accuracy of 71% on these retrospective patient samples. Our approach correctly classified 67% and 75% of the patients that were sensitive and resistant to gemcitabine as adjuvant chemotherapy, respectively. The median DFS for the sensitive and resistant groups are 491 and 162 days, respectively. This difference was statistically significant (log-rank test, p = 0.04). Furthermore, the mean TGI% for the prêt-à-porter is about 10-fold lower than the erlotinib arm (3% vs. 30%, Chi-square test, p = 0.02) in the pre-clinical study. This demonstrates that prêt-à-porter approach can be used to tailor personalized medicine and achieved better clinical response as compared to the current treatment approach. Conclusions: We comprehensively validated the prêt-à-porter approach in pre-clinical and clinical data and demonstrated that this approach can be used as a powerful translation research tool in enriching patient selection of novel drugs in clinical trials and realizing personalized medicine. [Table: see text]
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Dieterle, J. M. "Autonomy, Values, and Food Choice." Journal of Agricultural and Environmental Ethics 29, no. 3 (March 25, 2016): 349–67. http://dx.doi.org/10.1007/s10806-016-9610-2.
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