Relevant bibliographies by topics / Food packaging, preservation and processing

Academic literature on the topic 'Food packaging, preservation and processing'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Food packaging, preservation and processing"

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Burnd, Menduza, and Joffersen Yrick. "Product Preservation Design of Vegetable and Animal Food Processing." Journal La Lifesci 2, no. 6 (December 31, 2021): 1–12. http://dx.doi.org/10.37899/journallalifesci.v2i6.525.

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The aims of the research is determine the Product Preservation Design of Vegetable and Animal Food Processing. Packaging designed to preserve food components in the hands of customers while preventing contamination by bacteria and fungus is the goal. As long as food is stored properly, the quality of the food will deteriorate. Packaging is necessary in order to deliver the following information: Package must convey an accurate representation of its contents; it should neither be copied from other parties' packaging designs, nor should it be too complex, making it prohibitively costly to produce
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Varzakas, Theodoros, and Panagiotis Tsarouhas. "Advances in Food Processing (Food Preservation, Food Safety, Quality and Manufacturing Processes)." Applied Sciences 11, no. 12 (June 10, 2021): 5417. http://dx.doi.org/10.3390/app11125417.

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The aim of this special issue was to bring about advances in the area of food manufacturing, including packaging, addressing issues of food safety, quality, fraud and how these processes (new and old) could affect the organoleptic characteristics of foods, with the aim of promoting consumer satisfaction [...]
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Rodionova, K. O., and A. P. Paliy. "Analysis of contemporary meat and meat products’ processing methods." Journal for Veterinary Medicine, Biotechnology and Biosafety 5, no. 2 (June 24, 2019): 31–38. http://dx.doi.org/10.36016/jvmbbs-2019-5-2-6.

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For today, the issue of maximum preservation of meat and meat products at all stages of their production, storage, transportation and realization does not lose its relevance. Existing ways of food products’ preservation for prevention of their microbiological damage are divided into three groups: physical, chemical and biological. The article gives an analysis of modern methods of meat and meat products’ processing. Physical (chill, freezing, super freezing, ionizing irradiation, ultraviolet irradiation, pressure processing, laser irradiation) and chemical (with the use of organic acids, trisodium phosphate, extracts of plants with bacteriostatic properties etc.) methods of meat and meat products’ preservation are characterized. The data on the methods for extension of realization term due to the use of modern packaging materials (modified atmosphere, system of ‘active packaging’ and aseptic packaging) is given. The advantages and disadvantages of each of these methods are indicated.
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Giannakourou, Maria C., and Theofania N. Tsironi. "Application of Processing and Packaging Hurdles for Fresh-Cut Fruits and Vegetables Preservation." Foods 10, no. 4 (April 11, 2021): 830. http://dx.doi.org/10.3390/foods10040830.

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Recently, consumers’ demand for fresh, nutritious, and convenient food has shown a significant rise. This trend has forced increased sales of minimally processed and/or pre-packed fruit- and vegetable-based products. New product development and the diversification of plant-based foods have supported this growth. The food production sector should balance this requirement with the necessity to provide safe food with extended shelf life while meeting consumer demands for novel, nutritious, and affordable food products. The use of alternative “soft hurdles” may result in a decrease in the rate of food deterioration and spoilage attributed to microbial activity or other physiological/chemical degradation reactions. The objective of the article is to provide a systematic review of the preservative effect of the available hurdles implemented during processing and packaging of fresh-cut fruits and vegetables, focusing on recent applications aiming at improving product quality and prolonging their limited shelf life.
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Morris, Caroline, Aaron L. Brody, and Louise Wicker. "Non-thermal food processing/preservation technologies: a review with packaging implications." Packaging Technology and Science 20, no. 4 (2007): 275–86. http://dx.doi.org/10.1002/pts.789.

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Biswas, Rahul, Mahabub Alam, Animesh Sarkar, Md Ismail Haque, Md Moinul Hasan, and Mominul Hoque. "Application of nanotechnology in food: processing, preservation, packaging and safety assessment." Heliyon 8, no. 11 (November 2022): e11795. http://dx.doi.org/10.1016/j.heliyon.2022.e11795.

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Álvarez, M. Fernández. "Revisión: Envasado activo de los alimentos / Review: Active food packaging." Food Science and Technology International 6, no. 2 (April 2000): 97–108. http://dx.doi.org/10.1177/108201320000600203.

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A great technological development for food packaging has been developed over the past few decades to satisfy consumer demands relating to more natural forms of preservation, and methods to control packaging and storage for assurance and food safety. Active packaging is, certainly, one of the most important innovations in this field. Active packages are designed to perform a role other than to provide an inert barrier between the product and the outside environment, using the possible interactions between food and package in a positive way to improve product quality and acceptability. Active food packaging is a heterogeneous concept involving a wide range of possibilities which globally can be grouped in two main goals: (i) to extend shelf life, and (ii) to facilitate processing and consumption of foods. In the first case, active packaging solutions include the systems studied to control the mechanisms of deterioration inside the package (i.e. oxygen scavengers, moisture absorbers or antimicrobial agents). In relation to the second goal, active packaging allows us to match the package to the properties of the food, to reduce costs of processing, or even to perform some processing operations in-package or to control the product history and quality. This paper reviews the different applications of active packaging and their commercial use, together with some legal aspects and future trends.
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Pradhan, Neha, Surjit Singh, Nupur Ojha, Anamika Shrivastava, Anil Barla, Vivek Rai, and Sutapa Bose. "Facets of Nanotechnology as Seen in Food Processing, Packaging, and Preservation Industry." BioMed Research International 2015 (2015): 1–17. http://dx.doi.org/10.1155/2015/365672.

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Nanotechnology has proven its competence in almost all possible fields we are aware of. However, today nanotechnology has evolved in true sense by contributing to a very large extent to the food industry. With the growing number of mouths to feed, production of food is not adequate. It has to be preserved in order to reach to the masses on a global scale. Nanotechnology made the idea a reality by increasing the shelf life of different kinds of food materials. It is not an entirely full-proof measure; however it has brought down the extent of wastage of food due to microbial infestation. Not only fresh food but also healthier food is being designed with the help of nano-delivery systems which act as a carrier for the food supplements. There are regulations to follow however as several of them pose serious threats to the wellbeing of the population. In coming days, newer modes of safeguarding food are going to be developed with the help of nanotechnology. In this paper, an overview has been given of the different methods of food processing, packaging, and preservation techniques and the role nanotechnology plays in the food processing, packaging, and preservation industry.
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JIN, TONY Z., RAMADAN M. ABOELHAGGAG, and MINGMING GUO. "Apple Juice Preservation Using Combined Nonthermal Processing and Antimicrobial Packaging." Journal of Food Protection 84, no. 9 (April 20, 2021): 1528–38. http://dx.doi.org/10.4315/jfp-21-035.

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ABSTRACT This study was conducted to investigate the effectiveness of pulsed electric fields (PEFs), pulsed UV light (PL), and antimicrobial packaging (AP), either individually or combined, for inactivating bacteria and maintaining the quality of fruit juices. Apple juice samples were inoculated with Escherichia coli K-12 or native molds and yeasts (M&Y), treated with bench-scale PEF and/or PL processing systems, and stored in glass jars with antimicrobial caps containing 10 μL of carvacrol. The reductions in microbial populations and the physicochemical properties of juice samples were determined after treatments and during storage at 10°C. The treatments were PL (5 to 50 s at 1.04 J/cm2/s), PEF (19, 23, and 30 kV/cm), PEF followed by PL (PEF+PL), PL followed by PEF (PL+PEF), and PEF+PL+AP. PEF treatments at 19 to 30 kV/cm (PEF19, PEF23, and PEF30) resulted in 2.0-, 2.6-, and 4.0-log reductions of E. coli, respectively, and PL treatments for 10 to 50 s (PL10, PL20, PL30, PL40, and PL50) resulted in 0.45-, 0.67-, 0.76-, 2.3-, and 4.0-log reductions, respectively. No significant differences (P > 0.05) were found between the combined PL20+PEF19 and PEF19+PL20 treatments; both treatments reduced E. coli K-12 populations to nondetectable levels (>5-log reductions) after 7 days. Both PEF+PL and PEF+PL+AP treatments achieved >5-log reductions of M&Y; however, juice samples subjected to PEF+PL+AP treatment had lower M&Y counts (2.9 log units) than did samples subjected to PEF+PL treatment (3.9 log units) after 7 days. No significant differences (P > 0.05) in pH, acidity, and total soluble solids were found among all samples after treatments. Increased PL treatment times reduced color a* and b* values, total phenolics, and carotenoids. This study provides information valuable to juice processors for consideration and design of nonthermal pasteurization of juice products. HIGHLIGHTS
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Bayram, Banu, Gulay Ozkan, Tina Kostka, Esra Capanoglu, and Tuba Esatbeyoglu. "Valorization and Application of Fruit and Vegetable Wastes and By-Products for Food Packaging Materials." Molecules 26, no. 13 (July 1, 2021): 4031. http://dx.doi.org/10.3390/molecules26134031.

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The important roles of food packaging are food protection and preservation during processing, transportation, and storage. Food can be altered biologically, chemically, and physically if the packaging is unsuitable or mechanically damaged. Furthermore, packaging is an important marketing and communication tool to consumers. Due to the worldwide problem of environmental pollution by microplastics and the large amounts of unused food wastes and by-products from the food industry, it is important to find more environmentally friendly alternatives. Edible and functional food packaging may be a suitable alternative to reduce food waste and avoid the use of non-degradable plastics. In the present review, the production and assessment of edible food packaging from food waste as well as fruit and vegetable by-products and their applications are demonstrated. Innovative food packaging made of biopolymers and biocomposites, as well as active packaging, intelligent packaging, edible films, and coatings are covered.
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Dissertations / Theses on the topic "Food packaging, preservation and processing"

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Silva, Elisabeth Mary Cunha da. "Chemical and sensory investigations on the processing and preservation of a lamb product." Thesis, Queen's University Belfast, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324852.

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Chen, Cuiren 1962. "Application of computer simulation and artificial intelligence technologies for modeling and optimization of food thermal processing." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=37877.

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The major objective of this project was to evaluate the feasibility of artificial neural networks (ANNs) and genetic algorithms (GAs) for modeling and optimization of food thermal processing. The specific objectives were: (1) to develop a comprehensive computer simulation program for thermal processing, (2) to apply ANNs and GAs for modeling and optimization of constant retort temperature (CRT) thermal processing and variable retort temperature (VRT) thermal processing, (3) to develop dynamic models for thermal processing using ANNs, and (4) to explore ANN-model-based analysis of critical control points for deviant thermal processes.
As a preliminary research, neural network models were successfully developed for modeling of residence time distribution (RTD) under aseptic processing conditions. The main configuration parameters of neural networks such as the number of hidden layers and their neurons, learning runs, choice of transfer functions and learning rules were optimized.
In order to provide experimental data needed for developing and testing of ANN models and GA optimization, a comprehensive finite difference computer simulation program for thermal processing was first developed in MS Visual Basic language, which could be used for simulating different thermal processes such as constant retort temperature (CRT) and variable retort temperature (VRT) thermal processing.
The second objective was focused on developing modeling and optimization methods for CRT thermal processing using ANNs and GAs. The ANN models were developed for predicting process time, average quality retention, surface cook value, final temperature difference, lethality ratio, and equivalent energy consumption. Using this optimization program, the effects of process variables on the optimal retort temperature and the maximum average quality retention were investigated.
The final part of the thesis research was focused on applying ANN methods for the analysis of critical control points (CCPs) for deviant thermal processes, one of the important steps required for developing hazard analysis of critical control points (HACCP) program. The results indicated that ANN models could be efficiently used for the analysis of CCPs of thermal processing. Such a concept can be expanded for developing an ANN based HACCP expert system for thermal processing. (Abstract shortened by UMI.)
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Bojorquez, Romo Antonio. "PACKAGING PROCEDURES TO EXTEND THE SHELFLIFE OF FRESH PORK." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275234.

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Robson, Clarissa P. "Factors affecting the quality of precooked chilled foods." Thesis, University of Huddersfield, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254173.

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Carr, Timothy Perry. "EFFECT OF CONTROLLED GAS ATMOSPHERE PACKAGING UPON THE STORAGE QUALITY OF PRECOOKED BEEF SLICES." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275255.

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Lin, Shin-Jie. "Development of Edible Packaging for Selected Food Processing Applications." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1349125959.

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Britt, Ian John. "Extending the processing capabilities of a pilot scale retort." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26683.

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The object of this research was to develop a retort for research and development of thermal processes which use common commercial thermal processing techniques. An FMC 500W laboratory sterilizer, designed to operate with an FMC weir product racking system, was modified for conventional steam, positive flow steam/air and water immersion/air overpressure thermal processing of foods in thin profile retortable packages. The research included the modification of the retort plumbing and the fabrication of a set of product trays and a racking system. The completed system was tested for temperature distribution and stability, and heat transfer distribution for each processing mode. The latter was achieved by comparing the heat penetration parameters calculated from the centerpoint temperature histories of conduction heating teflon transducers.
Applied Science, Faculty of
Graduate
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Cilliers, Annamie. "Influence of different preservation techniques and packaging materials on the activity of stored Kepi grains." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52306.

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Thesis (MSc)--Stellenbosch University, 2001.
ENGLISH ABSTRACT: Kepi is a refreshing, fermented dairy beverage that has been consumed for centuries and is traditionally made by incubating Kepi grains in milk. The Kepi grain is a complex starter culture consisting of a variety of lactic acid bacteria and yeasts. The successful marketing of the grains requires the effective preservation of the microbes present in the grains as well as an appropriate packaging that will retain the acidification activity of the preserved grains over an extended period of time. The aim of this study was to evaluate different preservation techniques and packaging materials in terms of their respective abilities to retain grain viability and activity over an extended storage period. Four different preservation techniques (freezing at -18°C, refrigeration at 4°C, air-drying and Iyophilisation) and three packaging materials including a low density polyethylene film (LOPE), an oriented polyester film (OPET) and a metallised oriented polyester film (MOPET), were evaluated. Activity tests were used to evaluate the impact of the preservation techniques in terms of the retainment of the acidification activity of the preserved grains, and the storage potential of the preserved and packaged grains. The activity tests included changes in pH, %TA, lactic acid production and lactose and volatile compound content over an 18 h fermentation period. In addition, the microbial viability of the packaged Iyophilised grains after two months of storage, was also investigated. Frozen and refrigerated grains showed the best retainment of the acidification activity over a 10-month storage period. Air-drying and Iyophilisation showed a good retention of the activity up to three months of storage, but the application of these techniques both resulted in a retarded initial acidification activity. After 10 months of storage, the air-dried and Iyophilised grains showed only a low acidification activity. No volatile compounds could be detected during the course of the fermentation period, due to the relative short fermentation period of 18 h. Overall, the best retainment of the fermentation activity was given by the LOPE and the OPET packaging films. However, the storage period had a considerable influence on the retention of the activity of the packaged Iyophilised grains. The viability study of the Iyophilised packaged Kepi grains after two months of storage showed leuconostocs and lactobacilli to be the prevalent microbes in the grains. Low microbial counts were obtained from the lactococciselecting medium for all three of the differently packaged Kepi grains, whereas no growth was observed on the media that selected for the propionibacteria and yeasts. The OPET packaging film provided the best preservation of the microbial composition. It was, therefore, concluded that all four preservation techniques would be suitable for the preservation of Kepi grains and the subsequent storage at room temperature for three months. However, for storage periods of 10 months or longer the use of freezing and refrigeration are recommended as most suitable preservation techniques. All three of the packaging materials proved to be suitable for the packaging and storage of the Iyophilised Kepi grains for periods of up to one month. However, for storage periods of two months or longer, the use of the OPET film for the packaging and retainment of the acidification activity of the Iyophilised grains, can be recommended.
AFRIKAANSE OPSOMMING: Kepi is 'n eeu-oue verfrissende, gefermenteerde suiweldrankie wat tradisioneel vervaardig word deur Kepikorrels in melk te inkubeer. Hierdie Kepikorrels bestaan uit 'n komplekse samestelling van hoofsaaklik melksuurbakteriee en giste. Die effektiewe preservering en verpakking van die korrels is belangrike voorvereistes vir die suksesvolle bemarking daarvan. Dis belangrik dat die preserverinq en die verpakking van die korrels 'n positiewe bydrae sal lewer tot die behoud van die fermentasie-aktiwiteit van die mikrobes in die korrels oar 'n verlengde opbergingsperiode. Die doel van hierdie studie was om die opbergingspotensiaal van verskillend gepreserveerde en -verpakte Kepikorrels te evalueer in terme van die behoud van die lewensvatbaarheid en fermentasie-aktiwiteit van die samestellende mikrobes. Vier verskillende preserveringstegnieke (bevriesing by -18°C, verkoeling by 4°C, lugdroging en vriesdroging) en drie verskillende tipes verpakkingsmateriale, nl. 'n "low density polyethylene film" (LOPE), 'n "oriented polyester film" (OPET) en 'n "metallised oriented polyester film" (MOPET) was qeevalueer. Aktiwiteitstoetsing was gebruik om die impak van die verskillende preserveringstegnieke en die verpakkingsmateriale op die behoud van die fermentasie-aktiwiteit van die Kepikorrels te ondersoek. Die verskillende aktiwitieitstoetse wat gedoen is, het die meting van die verandering in pH, %TA, melksuur- en laktosekonsentrasie oor 'n fermentasieperiode van 18 h ingesluit. Tesame met die aktiwitietstoetsing IS die lewensvatbaarheid van die gevriesdroogde, verpakte Kepikorrels na twee maande van opberging ook ondersoek. Die bevrore en verkoelde Kepikorrels het die beste behoud van aktiwitiet na 'n 10-maande opbergingsperiode getoon. Die gelugdroogde en gevriesdroogde korrels het 'n goeie behoud van aktiwiteit getoon vir 'n opbergingstydperk van tot drie maande, maar beide die lugdroging- en vriesdrogingstegnieke het 'n aanvanklik vertraagde fermentasie-aktiwitieit getoon. Na 'n : opbergingsperiode van 10 maande het beide die gelugdroogde en gevriesdroogde korrels egter 'n lae fermentasie-aktiwiteit getoon. As gevolg van 'n relatiewe kort fermentasieperiode van 18 h kon geen vlugtige komponente in die Kepimonsters gevind word nie. Die LDPE- en OPET-verpakkingsmateriale het die beste behoud van die fermentasie-aktiwiteit van die gevriesdroogde korrels getoon. Die opbergingsperiode het egter 'n aansienlike impak op die aktiwitietsbehoud van die korrels gehad. Die lewensvatbaarheidstudie het aangetoon dat Leuconostoc- en Lactobacillus-spesies die oorheersende mikrobes in die verpakte, gevriesdroogde Kepikorrels na 'n opbergingsperiode van twee maande was. Lae mikrobiese tellings vir al drie van die verpakkingsmateriale was gevind op die Lactococcusselekterende medium, en geen mikrobegroei kon op die giste- en propionibakteriee-selekteringsmedium waargeneem word nie. Die beste behoud van die mikrobiese samestelling in die verpakte, gevriesdroogde Kepikorrels was gevind vir die OPET-verpakkingsmateriaal. Die gevolgtrekking kan gemaak word dat al vier die preserveringstegnieke geskik is vir die preservering van die Kepikorrels en die daaropvolgende opberging van drie maande by kamertemperatuur. Vir opbergingsperiodes van 10 maande en langer word die gebruik van bevriesing en verkoeling aanbeveel as die mees geskikte preserveringstegnieke. AI drie verpakkingsmateriale kan gebruik word vir die verpakking en opberging van gevriesdroogde Kepikorrels vir 'n tydperk van een maand. Indien 'n opbergingsperiode van twee maande of langer verlang word, word die OPET-verpakkingsmateriaal aanbeveel vir die suksesvolle behoud van die fermentasie-aktiwiteit van die Kepikorrels.
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PEDROSO, BIANCA M. "Avaliação do efeito sinergístico da embalagem à vácuo, irradiação e refrigeração da mandioca minimamente processada." reponame:Repositório Institucional do IPEN, 2005. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11272.

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Dissertacao (Mestrado)
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Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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Oluwole, Adebanji Olasupo. "Modified atmosphere packaging and quality of fresh Cape hake (Merluccius capensis) fish fillets." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/95967.

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Thesis (MScFoodSc)--Stellenbosch University, 2014.
ENGLISH ABSTRACT: Fresh ready-to-cook fish fillets are prone to rapid loss of freshness and other quality attributes, as well as accelerated growth of spoilage micro-organisms under sub-optimal storage conditions. Cape hake (Merluccius capensis) is an important seafood in South Africa; however, rapid loss of quality and eventual spoilage is a problem limiting the economic potential. Thus, the aim of this study was to investigate the effects of active (40% CO2 + 30% O2 + 30% N2) and passive (0.039% CO2 + 20.95% O2 + 78% N2) modified atmosphere packaging (MAP) under different storage temperatures (0°C, 4°C, and 8°C) on the quality attributes of Cape hake (Merluccius capensis) fish fillets. This was achieved by investigating the effects of MAP (with or without absorbent pads) and storage temperature on quality attributes (microbial, physicochemical and sensory), changes in composition and concentration of volatile compounds (VOCs) and shelf life of Cape hake fillets. Modified atmosphere packaging, storage temperature and the use of absorbent pads had a significant (p < 0.05) impacts on physicochemical properties of Cape hake fillets during refrigerated storage. Highest storage temperature (8°C) led to accelerated deterioration of packaged Cape hake fillets. Generally, active MAP better maintained the quality attributes of Cape hake than passive MAP at 0°C and 4°C. Headspace gas composition of O2 and CO2 were significantly influenced by the storage time, temperature, MAP conditions and their interactions (p < 0.05). Irrespective of storage temperature, active-MA packaged fillets had lower pH values in comparison to fillets stored under passive-MAP. Drip loss was higher in active-MA fillets packaged without absorbent pad. Passive-MAP fillets did not show any drip loss. Absorbent pad was used to add value to MAP storage as MAP resulted in drip. The use of absorbent pad combined with low storage temperature maintained the firmness of hake fillets, across all temperatures. The interaction of MAP, absorbent pad and storage temperature had a significant effect on the aerobic mesophillic bacteria counts. Based on the aerobic mesophillic bacteria count fillets stored under active-MAP at 0°C (5.2 log cfu/g) was limited to day 12, while the fillet stored under passive-MAP at 0°C (log cfu/g) was limited to greater than day 3. Overall sensory acceptability of fillets decreased with increase in storage temperature across all treatments. Additionally, MAP had a significant (p < 0.05) impact on sensory attributes such as appearance and odour acceptability, with active-MA packaged fillets stored at 0°C having highest overall acceptability. A total of 16 volatiles were identified in Cape hake fillets, including 4 primary VOCs and 12 secondary VOCs. The VOCs associated with spoilage include tri-methylamine (TMA) (ammonia like), esters (sickeningly sweet) and sulphur group (putrid). MAP had a significant (p< 0.05) influence on volatile composition and concentration. Active-MA packaged fillets performed better during storage and had lower TMA value of 0.85% on day 12 in comparison with 7.22% under passive-MAP on day 6 at 0°C. The results obtained demonstrated that changes in volatile compounds were significantly (p< 0.05) influenced by storage duration, temperature and MAP. The development of high levels of VOCs and off-odour corresponded with high aerobic mesophillic bacteria count (≥ 5.5 log cfu/g). Based on these developments the storage life of Cape hake fillets packaged under active-MAP with absorbent pad and stored at 0°C was limited to 12 d, while the passive-MAP (control) fillets stored at 0°C was limited to 3 d. The use of active-MAP, in combination with absorbent pads and 0°C storage in addition to good hygienic practices, was effective in maintaining the postharvest quality of Cape hake fish fillets and led to higher shelf life.
AFRIKAANSE OPSOMMING: Vars, gereed-vir-kook vis filette is geneig om gou hulle varsheid en ander gehalte kenmerke te verloor en die vervoegde groei van mikro-organismes wat bederf tydens stoor veroorsaak, vind plaas. Kaapse stokvis (Merluccius capensis) is in Suid-Afrika ‘n gewilde seekos maar die ekonomiese potensiaal daarvan word deur die feit dat dit so gou in gehalte afneem en bederf, beperk. Dus word daar met hierdie studie gepoog om die effek van aktiewe (40% CO2 + 30% O2 + 30% N2) en passiewe (0.039% CO2 + 20.95% O2 + 78% N2) aangepasde verpakking (MAP) onder verskillende stoortemperature (0°C, 4°C, en 8°C) op die gehalte kenmerke van Kaapse stokvis (Merluccius capensis) filette te ondersoek. Dit is gedoen deur om die effek van MAP (met of sonder kussinkies) en stoortemperatuur op die gehalte kenmerke (mikrobies, fisiochemies en sensories) asook veranderinge in komposisie en konsentrasie van vlugtige samestellings (VOCs) en die raklewe van Kaapse stokvis filette te ondersoek. Aangepasde atmosfeer verpakking, stoortemperatuur en die gebruik van absorberende kussinkies het ‘n groot impak (p < 0.05) op die fisiochemiese kenmerke van Kaapse stokvis tydens stoor in yskaste gehad. Hoë stoortemperature (8°C) het aanleiding gegee tot die vinnige bederf van verpakte Kaapse stokvis filette. Oor die algemeen het aktiewe MAP die gehalte van die Kaapse stokvis filette teen 0°C and 4°C beter bewaar. Die komposisie van O2 en CO2 is heelwat deur stoortyd, temperatuur, MA toestande en die interaksies tussen bogenoemde, beïnvloed (p< 0.05). By alle temperature het aktiewe MA verpakte filette laer pH waardes getoon in vergeleke met filette wat in onder passiewe MA verpak is. Die drupverlies was hoër in aktiewe MA filette verpak sonder absorberende kussinkies. Passiewe MAP filette het nie enige drupverlies getoon nie. Absorberende kussinkies is gebruik om waarde by te voeg tot MAP stoor aaangesien MAP gelei het tot drup. By alle temperature het die gebruik van absorberende kussinkies tesame met lae stoortemperature bygedra tot die behoud van fermheid. Die interaksie van MAP, absorberende kussinkies, en stoortemperatuur het ‘n groot effek gehad op die aerobiese mesofiliese bakterië telling. Weens die aerobiese mesofiliese bakterië telling is stoor van filette onder aktiewe MAP teen 0°C (5.2 log cfu/g) beperk tot dag 12, terwyl filette gestoor onder passiewe MAP teen 0°C ( log cfu/g) beperk is tot dag 3. Oor die algemeen het die sensoriese aanneemlikheid van filette sonder inasgneming van die behandeling, verklein met ‘n toename in stoortemperature. MAP het ook ‘n groot impak op die sensoriese kenmerke soos voorkoms, reuk, en aktiewe MA verpakte fillets gestoor teen 0°C is oor die algemeen die aanneemlikste. ‘n Totaal van 16 vlugtige substanse is in Kaapse stokvis identifiseer. Dit het vier primêre VOCs en 12 sekondêre VOCs ingesluit. Die VOCs wat met bederf assosieer word, sluit tri-metilamien (TMA) (soos ammoniak), esters (soet) en die swael groep (smetterig) in. MAP het ‘n groot (p < 0.05) invloed op die vlugtige komposisie en konsentrasie. Aktiewe MA verpakte filette het beter tydens stoor presteer en het ‘n laer TMA waarde van 0.85% op dag 12 gehad, in vergelyking met 7.22 % onder passiewe MAP op dag 6 teen 0°C. Die resultate toon dat veranderinge in vlugtige samestellings grootliks beïnvloed word (p < 0.05) deur stoortyd, temperature en MAP. Die ontwikkeling van hoë vlakke van VOCs, slegte reuke en verlies aan varsheid gaan tesame met hoë aerobiese mesofiliese bakterië telling (≥ 5.5 log cfu/g). Gegrond op hierdie tellings is die stoorleeftyd van Kaapse stokvis filette beperk tot dag 12, terwyl passiewe MAP (die kontrole) filette gestoor teen 0°C, beperk is tot dag 3. Om op te som, die gebruik van aktiewe MAP tesame met absorberende kussinkies en 0°C stoor asook goeie higiëniese praktyk, kon die na-oes gehalte van Kaapse stokvis filette behou en het gelei tot ‘n langer rakleeftyd.
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Books on the topic "Food packaging, preservation and processing"

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H, Han Jung, ed. Packaging for nonthermal processing of food. Ames, Iowa: Blackwell Pub., 2007.

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Holdsworth, S. D. Aseptic processing and packaging of food products. London: Elsevier Applied Science, 1992.

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Nelson, Philip E. Principles of aseptic processing and packaging. 3rd ed. West Lafayette, Ind: Purdue University Press, 2010.

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E, Nelson Philip, ed. Principles of aseptic processing and packaging. 3rd ed. West Lafayette, Ind: Purdue University Press, 2010.

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K, Singh R., Nelson Philip E, and International Conference on Aseptic Processing Technologies (2nd : 1991 : Chicago, Ill.), eds. Advances in aseptic processing technologies. London: Elsevier Applied Science, 1992.

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H, Graves Ralph, and Carlson V. R, eds. Aseptic processing and packaging of food: A food industry perspective. Boca Baton: CRC Press, 1996.

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1925-, Reuter H., ed. Aseptic processing of foods. Hamburg, Germany: Behr's...Verlag, 1993.

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V, Chambers James, Nelson Philip E, and Food Processors Institute (Washington, D.C.), eds. Principles of aseptic processing and packaging: [edited by James V. Chambers, Philip E. Nelson. 2nd ed. Washington, D.C: Food Processors Institute, 1993.

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M, Mathlouthi, ed. Food packaging and preservation. London: Blackie Academic & Professional, 1994.

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Mathlouthi, M., ed. Food Packaging and Preservation. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2173-0.

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Book chapters on the topic "Food packaging, preservation and processing"

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Azam-Ali, Sue, Emma Judge, Peter Fellows, and Mike Battcock. "Food Spoilage; Methods of Food Preservation; Food Safety, Hygiene and Quality Assurance; Packaging." In Small-Scale Food Processing, 11–33. Rugby, Warwickshire, United Kingdom: Practical Action Publishing, 1992. http://dx.doi.org/10.3362/9781780441368.002.

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Hegde, Shreya M., Sanya Hazel Soans, Ravi Teja Mandapaka, J. M. Siddesha, Ann Catherine Archer, Chukwuebuka Egbuna, and Raghu Ram Achar. "Nanomaterials in Food System Application: Biochemical, Preservation, and Food Safety Perspectives." In Application of Nanotechnology in Food Science, Processing and Packaging, 17–30. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-98820-3_2.

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Aminlari, Mahmoud. "Plant- and Animal-Derived Enzymes and Their Potential Application in Food Processing and Preservation." In Biodegradable Polymer-Based Food Packaging, 41–80. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-5743-7_3.

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Ghoshal, Gargi. "Recent Advancements in Edible and Biodegradable Food Packaging." In Handbook of Research on Food Processing and Preservation Technologies, 165–99. Boca Raton: Apple Academic Press, 2021. http://dx.doi.org/10.1201/9781003184645-11.

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Yadav, Ajay, Samlesh Kumari, and Dibyakanta Seth. "Recent Trends in Edible and Alternative Food Packaging Technologies." In Handbook of Research on Food Processing and Preservation Technologies, 137–64. Boca Raton: Apple Academic Press, 2021. http://dx.doi.org/10.1201/9781003184645-10.

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Pandiselvam, R., B. L. Dinesha, Anjineyulu Kothakota, S. V. Ramesh, B. Kamalapreetha, and T. Rohit. "Potential of Ozonation in Surface Modification of Food Packaging Polymers." In Handbook of Research on Food Processing and Preservation Technologies, 201–29. Boca Raton: Apple Academic Press, 2021. http://dx.doi.org/10.1201/9781003184645-12.

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Saleem, Shaibi, and Shams Tabrez Khan. "Engineered Nanomaterials for Food Preservation And Packaging: Focus on Antimicrobial And Antibiofilm Activities." In Quality Control in Fruit and Vegetable Processing, 229–59. New York: Apple Academic Press, 2023. http://dx.doi.org/10.1201/9781003304999-12.

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Shin, Joongmin, and Susan E. M. Selke. "Food Packaging." In Food Processing, 249–73. Chichester, UK: John Wiley & Sons, Ltd, 2014. http://dx.doi.org/10.1002/9781118846315.ch11.

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Brennan, James G., and Brian P. F. Day. "Packaging." In Food Processing Handbook, 225–80. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527634361.ch8.

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Brennan, James G., and Brian P. F. Day. "Packaging." In Food Processing Handbook, 291–350. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607579.ch9.

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Conference papers on the topic "Food packaging, preservation and processing"

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Silva, Viviane De Souza, Farayde Matta Fakhouri, Luna Valentina Angulo Arias, Rosa Helena Aguiar, and Rafael Augustus Oliveira. "Bread preservation with use of edible packaging." In 21st International Drying Symposium. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/ids2018.2018.7799.

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We live in a world that usually use plastic bags either to go shopping or to pack the snack for a short trip. However, packaging makes life easier and serves as protection for products such as food. Bread is a common food product that needs packaging in order to be protected at storage and transportation. Therefore, with aim of reducing petroleum derived packagin g consumption it was developed an edible film from potato starch to packeg bread and some quality characteristics like water content, firmness and weight loss were evaluated, showing that edible film can be used as a packaging.Keywords: biopolymers; edible coatings; packaging materials; starch; storage.
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Ahmed Wani, Idrees. "Applications of nanotechnology in food processing and food packaging: A review." In Proceedings of the International Conference on Nanotechnology for Better Living. Singapore: Research Publishing Services, 2016. http://dx.doi.org/10.3850/978-981-09-7519-7nbl16-rps-28.

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Bandigamapalage, Wasana, Thilini Chandrasir, and Kolitha Wijesekara. "Preparation of a Low Cost Nutrient Bar Incorporated with Underutilized Seeds as a Convenient and Functional Meal Replacement Alternative D." In The SLIIT International Conference on Engineering and Technology 2022. Faculty of Engineering, SLIIT, 2022. http://dx.doi.org/10.54389/amfm1789.

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People with busy lifestyles routinely consume fast food as an easy alternative for main meal. Consequently, they prone to suffer from non-communicable diseases such as diabetics. The purpose of this research was to develop a nutritious bar as a meal replacement under the Recommended Dietary Allowances (RDA) using underutilized seeds such as pumpkin, winged beans, watermelon, corn, mung beans, and rice flakes. The proximate analysis, physicochemical properties, sensory attributes and microbiological parameters were evaluated using the Association of Official Agricultural Chemist standards (AOAC), Human Research Ethics Committee standards (Brazil), and Sri Lanka Standards Institution (SLS 516: 1991) respectively. Developed mung based (321), rice flake based (123) and commercial nutrient bar (801) revealed a significant difference (p ≤ 0.05) in attributes except mouthfeel in the sensory evaluation. A mold and a package was designed with an effective packaging material. The shelf-life was evaluated after adding the permitted preservative (E211-Sodium benzoate) to developed mung based (321), rice flake based (123) bars which had a self-life of one-month. The mung based nutrient bar revealed an average of 1.7±0.1 % moisture, 0.9±0.7% fat, 9.7±0.1% ash, 21.8±2.5% crude fibre, 36.6±0.0 % protein, 29.2±8.3% carbohydrates, and the rice flake bar contained an average of 2.2±0.3% moisture, 2.7±0.2% fat, 7.9±0.2 % ash, 11.4±1.4 % crude fibre, 31.9±0.0 % protein, 43.8±0.0 carbohydrates. The commercial nutrient bar had 1.5±0.1% moisture, 1.5±0.0% fat, 7.8±0.0% ash, 0.5±0.5% crude fibre, 32.5±0.0 % protein, and 56.3±3.9% carbohydrates on average. The energy content (kcal) in rice flakes based, mung based and commercial bars were 327.1, 271.3, and 360 respectively. The finding ascertained that the developed nutrient bars (123, 321) directly fulfill the recommended dietary allowance as a meal replacement concerning European Union Commission Regulations and substantiate that the same nutrient profiles in the commercial nutrition bars could be obtained from the developed samples with a lesser processing cost. KEYWORDS: Commercial nutrient bar, meal replacement, recommended dietary allowance, underutilized seeds
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Lu, Delong, Tao Jia, Qingguo Lin, Guoqing Wang, Zonghua Zhou, and Suyu Jin. "Research on classification method of food packaging character defects." In International Conference on Optics and Image Processing (ICOIP 2021), edited by Fengxin Cen and Xizheng Ke. SPIE, 2021. http://dx.doi.org/10.1117/12.2605916.

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Ugolotti, Sara, and Giuseppe Vignali. "Design and testing of Modified Atmosphere Packaging of cow’s ricotta." In the 4th International Food Operations and Processing Simulation Workshop. CAL-TEK srl, 2018. http://dx.doi.org/10.46354/i3m.2018.foodops.007.

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"The aim of this work is to evaluate the shelf life of cow’s ricotta under MAP (Modified Atmosphere Packaging). MAP is a packaging technique commonly used in the food industry in order to control the microbial growth. After the extraction of the air present in the headspace of the package, a mixture of CO2, O2 and N2 in different percentage is usually introduced before the packaging sealing. Based on these premises, a design of experimental tests has been created in order to evaluate the effect of each process parameters. To perform these test, it is also required the creation of thermoformed trays (made with a multilayer material using PET/EVOH/PE) in which the ricotta was inserted and packaged in a modified atmosphere. After the time intervals established in the experimental program, the analysis of the MAP was carried out using a special instrument (“Oxybaby” made by Witt SpA), able to measure the quantity of gas present in the headspace of the thermoformed trays. Then a statistical analysis of the obtained results was carried out. The results showed that after 10 days the product was edible for all types of atmosphere, but at 20 and, especially, at 30 days, even in the trays wrapped with CO2, the product was not acceptable for human consumption. One of the possible solutions, in order to lengthen the shelf life of cow’s ricotta, consists in the pre-sterilization of the trays before the product packaging with a solution of H2O2."
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Tonelli, Annachiara, David Mosna, and Giuseppe Vignali. "Comparative Life Cycle Assessment of different packaging systems for coffee capsules." In the 4th International Food Operations and Processing Simulation Workshop. CAL-TEK srl, 2018. http://dx.doi.org/10.46354/i3m.2018.foodops.001.

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"The aim of this work is to compare the environmental impact of three different packaging systems for coffee capsules, which can be used in the same coffee machine. A comparative Life Cycle Assessment has been performed considering the following three types of coffee capsules: 1. Compostable coffee capsules packaged into a multichamber PET tray. 2. Capsules made of aluminium and packaged into cardboard boxes. 3. Capsules made of polypropylene with an aluminium top lid, singularly packaged in modified atmosphere into a bag made of multilayer film of aluminium and polypropylene. The functional unit considered is a coffee capsule. To evaluate the environmental impact, the EPD (Environmental Product Declaration) method is used. This work shows that it is possible to reduce the environmental impact of compostable capsules packaged in PET tray by two ways: by using a less polluting starch polymer and by producing biogas instead of compost from the organic waste. With these improvements, the compostable coffee capsule in PET tray results the less damaging packaging system for all categories except than for the ozone layer depletion and the fossil fuels depletion."
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Timire, Joel. "INFUSING INDIGENOUS KNOWLEDGE SYSTEMS (IKSS) IN TECHNOLOGY EDUCATION: A CASE OF FOOD PROCESSING AND PRESERVATION." In 11th International Conference on Education and New Learning Technologies. IATED, 2019. http://dx.doi.org/10.21125/edulearn.2019.0102.

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Balasubramaniam, V. M. (Bala). "Non-Thermal Preservation of Fruit Juices." In ASME 2008 Citrus Engineering Conference. American Society of Mechanical Engineers, 2008. http://dx.doi.org/10.1115/cec2008-5404.

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Consumers demand healthier fresh tasting foods without chemical preservatives. To address the need, food industry is exploring alternative preservation methods such as high pressure processing (HPP) and pulsed electric field processing. During HPP, the food material is subjected to elevated pressures (up to 900 MPa) with or without the addition of heat to achieve microbial inactivation with minimal damage to the food. One of the unique advantages of the technology is the ability to increase the temperature of the food samples instantaneously; this is attributed to the heat of compression, resulting from the rapid pressurization of the sample. Pulsed electric field (PEF) processing uses short bursts of electricity for microbial inactivation and causes minimal or no detrimental effect on food quality attributes. The process involves treating foods placed between electrodes by high voltage pulses in the order of 20–80 kV (usually for a couple of microseconds). PEF processing offers high quality fresh-like liquid foods with excellent flavor, nutritional value, and shelf life. Pressure in combination with other antimicrobial agents, including CO2, has been investigated for juice processing. Both HPP and PEF are quite effective in inactivating harmful pathogens and vegetative bacteria at ambient temperatures. Both HPP and PEF do not present any unique issues for food processors concerning regulatory matters or labeling. The requirements are similar to traditional thermal pasteurization such as development of a Hazard Analysis Critical Control Point (HACCP) plan for juices and beverages. Examples of high pressure, pasteurized, value added products commercially available in the United States include smoothies, fruit juices, guacamole, ready meal components, oysters, ham, poultry products, and salsa. PEF technology is not yet widely utilized for commercial processing of food products in the United States. The presentation will provide a brief overview of HPP and PEF technology fundamentals, equipment choices for food processors, process economics, and commercialization status in the food industry, with emphasis on juice processing. Paper published with permission.
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Bandyopadhyay, Smarak, Nabanita Saha, and Petr Saha. "Comparative analysis of bacterial cellulose based polymeric films for food packaging." In PROCEEDINGS OF THE 35TH INTERNATIONAL CONFERENCE OF THE POLYMER PROCESSING SOCIETY (PPS-35). AIP Publishing, 2020. http://dx.doi.org/10.1063/1.5142984.

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Stefanini, Roberta, and Giuseppe Vignali. "The effects of different packaging and pressures on a dairy product treated with the high pressure processing." In THE 6TH INTERNATIONAL FOOD OPERATIONS & PROCESSING SIMULATION WORKSHOP. CAL-TEK srl, 2020. http://dx.doi.org/10.46354/i3m.2020.foodops.003.

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Reports on the topic "Food packaging, preservation and processing"

1

Zilinski, Lisa. Food Technology and Processing / Food Preservation - University of South Florida. Purdue University Libraries, January 2012. http://dx.doi.org/10.5703/1288284315003.

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Bryant, C. A., S. A. Wilks, and C. W. Keevil. Survival of SARS-CoV-2 on the surfaces of food and food packaging materials. Food Standards Agency, November 2022. http://dx.doi.org/10.46756/sci.fsa.kww583.

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COVID-19, caused by the SARS-CoV-2 virus, was first reported in China in December 2019. The virus has spread rapidly around the world and is currently responsible for 500 million reported cases and over 6.4 million deaths. A risk assessment published by the Foods Standards Agency (FSA) in 2020 (Opens in a new window) concluded that it was very unlikely that you could catch coronavirus via food. This assessment included the worst-case assumption that, if food became contaminated during production, no significant inactivation of virus would occur before consumption. However, the rate of inactivation of virus on products sold at various temperatures was identified as a key uncertainty, because if inactivation does occur more rapidly in some situations, then a lower risk may be more appropriate. This project was commissioned to measure the rate of inactivation of virus on the surface of various types of food and food packaging, reducing that uncertainty. The results will be used to consider whether the assumption currently made in the risk assessment remains appropriate for food kept at a range of temperatures, or whether a lower risk is more appropriate for some. We conducted a laboratory-based study, artificially contaminating infectious SARS-CoV-2 virus onto the surfaces of foods and food packaging. We measured how the amount of infectious virus present on those surfaces declined over time, at a range of temperatures and relative humidity levels, reflecting typical storage conditions. We tested broccoli, peppers, apple, raspberry, cheddar cheese, sliced ham, olives, brine from the olives, white and brown bread crusts, croissants and pain au chocolat. The foods tested were selected as they are commonly sold loose on supermarket shelves or uncovered at deli counters or market stalls, they may be difficult to wash, and they are often consumed without any further processing i.e. cooking. The food packaging materials tested were polyethylene terephthalate (PET1) trays and bottles; aluminium cans and composite drinks cartons. These were selected as they are the most commonly used food packaging materials or consumption of the product may involve direct mouth contact with the packaging. Results showed that virus survival varied depending on the foods and food packaging examined. In several cases, infectious virus was detected for several hours and in some cases for several days, under some conditions tested. For a highly infectious agent such as SARS-CoV-2, which is thought to be transmissible by touching contaminated surfaces and then the face, this confirmation is significant. For most foods tested there was a significant drop in levels of virus contamination over the first 24 hours. However, for cheddar cheese and sliced ham, stored in refrigerated conditions and a range of relative humidity, the virus levels remained high up to a week later, when the testing period was stopped. Both cheddar cheese and sliced ham have high moisture, protein and saturated fat content, possibly offering protection to the virus. When apples and olives were tested, the virus was inactivated to the limit of detection very quickly, within an hour, when the first time point was measured. We suggest that chemicals, such as flavonoids, present in the skin of apples and olives inactivate the virus. The rate of viral decrease was rapid, within a few hours, for croissants and pain au chocolat. These pastries are both coated with a liquid egg wash, which may have an inhibitory effect on the virus. Food packaging materials tested had variable virus survival. For all food packaging, there was a significant drop in levels of virus contamination over the first 24 hours, in all relative humidity conditions and at both 6°C and 21°C; these included PET1 bottles and trays, aluminium cans and composite drinks cartons.
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Short, Samuel, Bernhard Strauss, and Pantea Lotfian. Emerging technologies that will impact on the UK Food System. Food Standards Agency, June 2021. http://dx.doi.org/10.46756/sci.fsa.srf852.

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Rapid technological innovation is reshaping the UK food system in many ways. FSA needs to stay abreast of these changes and develop regulatory responses to ensure novel technologies do not compromise food safety and public health. This report presents a rapid evidence assessment of the emerging technologies considered most likely to have a material impact on the UK food system and food safety over the coming decade. Six technology fields were identified and their implications for industry, consumers, food safety and the regulatory framework explored. These fields are: Food Production and Processing (indoor farming, 3D food printing, food side and byproduct use, novel non-thermal processing, and novel pesticides); Novel Sources of Protein, such as insects (for human consumption, and animal feedstock); Synthetic Biology (including lab-grown meat and proteins); Genomics Applications along the value chain (for food safety applications, and personal “nutrigenomics”); Novel Packaging (active, smart, biodegradable, edible, and reusable solutions); and, Digital Technologies in the food sector (supporting analysis, decision making and traceability). The report identifies priority areas for regulatory engagement, and three major areas of emerging technology that are likely to have broad impact across the entire food industry. These areas are synthetic biology, novel food packaging technologies, and digital technologies. FSA will need to take a proactive approach to regulation, based on frequent monitoring and rapid feedback, to manage the challenges these technologies present, and balance increasing technological push and commercial pressures with broader human health and sustainability requirements. It is recommended FSA consider expanding in-house expertise and long-term ties with experts in relevant fields to support policymaking. Recognising the convergence of increasingly sophisticated science and technology applications, alongside wider systemic risks to the environment, human health and society, it is recommended that FSA adopt a complex systems perspective to future food safety regulation, including its wider impact on public health. Finally, the increasing pace of technological
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4

Cairo, Jessica, Iulia Gherman, and Paul Cook. The effects of consumer freezing of food on its use-by date. Food Standards Agency, July 2021. http://dx.doi.org/10.46756/sci.fsa.ret874.

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The current Food Standards Agency consumer guidance states that consumers can freeze pre-packed food right up to the “use-by” date and, once food has been defrosted, it should be consumed within 24 hours. This strategic review has collated relevant data to determine whether there is an increased risk in relation to freezing ready-to-eat and non-ready-to-eat foods on the use-by date compared to the day before the use-by date. The review has focused on how the shelf-life of a food is determined and the effects of freezing, thawing and refrigeration on foodborne pathogens, including Bacillus spp., Campylobacter spp., Clostridium botulinum, Clostridium perfringens, Listeria monocytogenes, Salmonella, pathogenic Escherichia coli and Shigella spp. In the UK, food business operators are responsible for setting the safe shelf-life of a food which, in practice, should take into consideration the consumer habits, as well as the factors affecting shelf-life, such as food product characteristics, food processing techniques, transport, retail and domestic food storage temperatures, and type of packaging. Some countries, such as Ireland, New Zealand and Canada specifically recommend including safety margins within shelf lives. This is used to maintain brand integrity because it ensures that the food is consumed in its optimum condition. The FSA has collaborated with other organisations in the production of several guidance documents; however, there is no explicit requirement for the consideration of a margin of safety when setting shelf-life. There is also no legal requirement in the UK to consider a safety margin when setting shelf-life. According to regulations, pathogens should not be present in sufficient levels to cause foodborne illness on the use-by date, as food should still be safe to eat on that day. Given that these requirements are met, the risk assessed in this report arises from the processes of freezing, thawing and subsequent refrigerated storage for a further 24 hours, and the potential for these to increase pathogen levels. In this review, it was found that there is a risk of additional growth of certain pathogens during the refrigerated storage period although the impact of freezing and thawing on the extent of this growth was not readily evident. This risk would relate specifically to ready-to-eat foods as cooking of non-ready-to-eat foods after defrosting would eliminate pathogens. This report explores the potential issues related to consumer freezing on the use-by date and identifies additional information or research required to understand the risks involved. Overall, there is little evidence to suggest a significant change in risk between consumers freezing ready-to-eat food on the use-by date compared to freezing the food on the day before the use-by date. Specific areas that merit further research include the risks due to low temperature survival and growth of L. monocytogenes. There is also a lack of research on the effects of freezing, defrosting and refrigeration on the growth and toxin production of non-proteolytic C. botulinum, and the growth of Salmonella during domestic freezing and thawing. Finally, more information on how food business operators set shelf-life would enable a better understanding of the process and the extent of the safety margin when determining shelf-life of ready-to-eat and non-ready-to-eat foods.
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5

Rahimipour, Shai, and David Donovan. Renewable, long-term, antimicrobial surface treatments through dopamine-mediated binding of peptidoglycan hydrolases. United States Department of Agriculture, January 2012. http://dx.doi.org/10.32747/2012.7597930.bard.

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There is a need for renewable antimicrobial surface treatments that are semi- permanent, can eradicate both biofilms and planktonic pathogens over long periods of time and that do not select for resistant strains. This proposal describes a dopamine binding technology that is inexpensive, bio-friendly, non-toxic, and uses straight-forward commercially available products. The antimicrobial agents are peptidoglycanhydrolase enzymes that are non-toxic and highly refractory to resistance development. The goal of this project is to create a treatment that will be applicable to a wide variety of surfaces and will convey long-lasting antimicrobial activity. Although the immediate goal is to create staphylolytic surfaces, the technology should be applicable to any pathogen and will thus contribute to no less than 3 BARD priorities: 1) increased animal production by protecting animals from invasive and emerging diseases, 2) Antimicrobial food packaging will improve food safety and security and 3) sustainable bio- energy systems will be supported by coating fermentation vats with antimicrobials that could protect ethanolic fermentations from Lactobacillus contamination that reduces ethanol yields. The dopamine-based modification of surfaces is inspired by the strong adhesion of mussel adhesion proteins to virtually all types of surfaces, including metals, polymers, and inorganic materials. Peptidoglycanhydrolases (PGHs) meet the criteria of a surface bound antimicrobial with their site of action being extracellular peptidoglycan (the structural basis of the bacterial cell wall) that when breached causes osmotic lysis. As a proof of principle, we will develop technology using peptidoglycanhydrolase enzymes that target Staphylococcus aureus, a notoriously contagious and antimicrobial-resistant pathogen. We will test for susceptibility of the coating to a variety of environmental stresses including UV light, abrasive cleaning and dessication. In order to avoid resistance development, we intend to use three unique, synergistic, simultaneous staphylococcal enzyme activities. The hydrolases are modular such that we have created fusion proteins with three lytic activities that are highly refractory to resistance development. It is essential to use multiple simultaneous activities to avoid selecting for antimicrobial resistant strains. This strategy is applicable to both Gram positive and negative pathogens. We anticipate that upon completion of this award the technology will be available for commercialization within the time required to achieve a suitable high volume production scheme for the required enzymes (~1-2 years). We expect the modified surface will remain antimicrobial for several days, and when necessary, the protocol for renewal of the surface will be easily applied in a diverse array of environments, from food processing plants to barnyards.
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