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Literatura académica sobre el tema "Pain – Propriétés physico-chimiques – Analyse sensorielle"
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Artículos de revistas sobre el tema "Pain – Propriétés physico-chimiques – Analyse sensorielle"
Aïssatou, Coulibaly, Kouadio Degbeu Claver, Doh Amenan Aline y Amani N’Guessan Georges. "Étude de la stabilité de quelques propriétés physicochimiques des tranches d’igname congelées (Dioscorea cayenensis-rotundata cv Kponan) de Côte d’Ivoire et analyse sensorielle des mets dérivés". Journal of Applied Biosciences 158 (28 de febrero de 2021): 16321–39. http://dx.doi.org/10.35759/jabs.158.6.
Texto completoTesis sobre el tema "Pain – Propriétés physico-chimiques – Analyse sensorielle"
Maurice, Bastien. "Transformations alimentaires industrielles, artisanales ou à domicile : quels impacts sur les qualités des produits et les perceptions par les consommateurs ?" Electronic Thesis or Diss., université Paris-Saclay, 2022. http://www.theses.fr/2022UPASB071.
Texto completoThe consumption of processed industrial products is pointed out to be partly related to the prevalence of cardiovascular diseases, obesity or cancer. In order to help the implementation of recommendations to consumers, but also to manufacturers and public authorities, it is necessary to study the impact of food processing, elaborated in different contexts (industrial, artisanal, domestic), on the qualities of the products and on the perceptions of the consumers.For this purpose, soft bread and pizza were selected as models. Multi-criteria mappings (nutritional and technological) were performed on industrial products in order to highlight intra-category variability. In particular, the Process-Score was found to be correlated with the Nutri-Score. From this, 24 industrial, artisanal, and homemade soft breads were selected to be representative from a nutritional and processing point of view. They presented similar physical and technological properties, and different profiles of volatile molecules in particular for industrial soft breads showing less fermentation markers and more oxidation markers.These objective data were compared to the perceptions of more than 60 participants. Industrial breads were perceived as less good nutritionally, although they had the best Nutri-Scores.Industrial pizzas were perceived to have more additives, although they contained the least.The perception of a healthy product seemed to be anti-correlated to the Process-Score for both products, while the perception of the degree of processing of a soft bread was anti-correlated to the fat and salt contents, which was not the case for the pizza.The impact of nutritional and technological information was tested on the perceptions of soft breads, and showed that consumers modified their perceptions, without completely erasing the weight of their beliefs.In addition, it was shown what priorities were declared by 1,000 participants when purchasing a food product (expectations on the taste and naturalness of products seemed to be more important than the presence of labels), and how these priorities varied according to the way the product was processed, with less attention paid to products purchased in restaurants.These results therefore provide avenues for product reformulation by manufacturers, for communication by public authorities on these themes and also to enlighten consumers in their choices, or to provide consolidated data for calculating a Process-Score for, for example, epidemiological studies on the impact of processed products on health
Matignon, Anne. "Etude des interactions physico-chimiques des ingrédients fonctionnels des crèmes desserts et de leurs impacts sur leurs microstructures et leurs propriétés sensorielles". Thesis, Paris, AgroParisTech, 2013. http://www.theses.fr/2013AGPT0044/document.
Texto completoNeutral dairy desserts are composed of a large diversity of products of similar composition but different structures and textures. Their structure set up is defined by the interactions between three of their quantitatively minor components: starch, milk proteins and carrageenan. The objective of this PhD project was to better understand the chemical-physics mechanisms beyond the neutral dairy desserts structure set up and their impact on the sensory perception of the product.The study focused on single, binary and ternary mixtures containing starch. It was performed with a modified waxy maize starch, reconstituted skim milk and kappa carrageenan mostly. Using rheological and microscopic tools, different interactions were highlighted. In binary mixtures, carrageenan was found to adsorb on the starch granules. A specific study on those interactions pointed out that they depended on carrageenans' charge density and molecular weights. In ternary mixtures, preferential carrageenan / casein micelles interactions in comparison to starch / carrageenan ones were pointed out even when milk proteins were added after starch pasting in a carrageenan solution. The addition of milk before or after starch pasting led to products of same formula but different microstructures. Starch granules were in both cases embedded in a carrageenan / casein micelles network still, the starch granules states or characteristics and the network formed differed. Dispersed starch and carrageenan / milk phases were defined as the key structure parameters of neutral dairy desserts. To assess their impact on sensorial perception, nine products of same formula but built differently were produced. The evaluation was done by subjects by means of a free sorting task followed by a ranking task on free discriminating terms. Sensory differences were found between the products. These differences were characterized and correlated with instrumental attributes.This work permitted to collect numerous data on chemical-physics properties, link them to the structure set up and to their potential impact on sensory properties of dairy creams. All this knowledge would be easily used to improve tailor food development and particularly to formulate new dairy cream texture through a reverse engineering approach
Chao, Christina. "Étude des propriétés émollientes de biomolécules commerciales et synthétisées en vue de la substitution du décaméthylcyclopentasiloxane (D5)". Thesis, Compiègne, 2017. http://www.theses.fr/2017COMP2379/document.
Texto completoEmolliency is a word used to define the ability of a compound to soften or lubricate the skin. ln the cosmetic field, emollients are used to modify the consistency, the viscosity or the polarity of a formulation. Many emollients can be used in cosmetic products. However, in the literature both physicochemical and sensory data ar still lacking, making it difficult to choose an emollient. Furthermore, the sensory analysis usually performed to characterize emollients are particularly time-consuming and thus, expensive. Among the different chemical families of emollients, silicone derivatives stand out thanks to their specific properties. Indeed, they are characterized by an excellent spreading on skin and hair, a smooth skin feel, non-greasy and non-sticky, or by a dry skin feel without a fresh effect. However, even though these sensory properties are exceptional, recent studies wonder about the toxicity of a cyclic silicone particularly used in cosmetic products: the decamethylcyclopentasiloxane (D5). Thus, this work deals With two main objectives. The first one consists in the research of a bio-based alternative to the D5 For this purpose, a number of commercial and synthesized molecules were characterized and compared With physicochemical measurements and sensory analysis, allowing the observations of trends between structures and properties. The second objective relies on the study of correlations between physico-chemical and sensory data in order to predict the emollient properties of cosmetic ingredients. This would ease the work of formulators during the screening of ingredients
Moussier, Marine. "Structuration de la matière grasse dans une matrice protéique laitière en fonction de la composition et du procédé : Influence sur les propriétés du produit". Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLA003/document.
Texto completoThere is a wide variety of dairy matrices on the market, with very different textures. Among them, high fat stirred yogurts (≥ 5%) are particularly appreciated by the consumers for their creamy texture. The creamy texture is linked to both the level of firmness and the fat perception in mouth (oily film, melting) and is directly driven by the structure of the product. The objective of this work was to change the texture of high fat stirred yogurts by tailoring their structure without addition of any additive.High fat stirred yogurts are concentrated dispersions of microgels, where each microgel is an emulsion-filled gel (i.e. fat droplets dispersed in a protein network and interacting with it via the interface). Several levers were identified in order to modify the structure and the main ones were the state of fat, the composition and the physico-chemical state of the interface, and the size and stiffness of the microgels. These levers were modified through formulation and process, either at pilot- scale (industrial partner) or at lab-scale (mini-line of stirred yogurt production specially developed).A multi-scale approach was adopted to understand the relationship between the structure and the macroscopic properties. The physico-chemical properties of milk proteins and fat were characterized. The interfacial properties of whey proteins were measured depending on their physico-chemical state. The microstructure was accurately characterized through the sizes of fat droplets and microgels, the shape and fractal dimension of microgels (with 3D reconstruction) and the quantitative analysis of the stirred yogurt microstructure (mathematical morphology). The macroscopic properties were measured by combining rheology (firmness) and tribology (lubrication) in conditions consistent with oral processing (shearing, temperature, materials). Each identified lever was individually tested and the nature of the interface and the composition of fat droplets were proved to be interesting in modifying the macroscopic properties (firmness, lubrication) of stirred yogurts. These two levers were eventually combined in a study to take their interdependence into account. All the work led to the statement of structuring mechanisms of the stirred yoghurts depending on the conditions of formulation and process used