Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 25 for “"modified atmosphere packaging"”.
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Modified atmosphere packaging of hard grated cheeses
… growth of a food pathogen when packaged under a modified atmosphere (25% CO, and 75% N,). Other microbial analysis included mold and yeast enumerations. Secondly, product quality and shelf stability were determined biweekly by sensory, microbial, and instrumental analysis to evaluate product …
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Modified atmosphere packaging of ground turkey thigh meat
… period. Colorimeter values did show the 100% CO₂ atmosphere caused discoloration of the product during the first week. Fat level did not affect microorganism growth or shelf-life extension. Rosemary oleoresin was effective as an antioxidant. TBA values of rosemary treated samples remained under …
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Inhibition of Listeria monocytogenes on frankfurters by modified atmosphere packaging and antimicrobials
… this study was to determine the effect of vacuum packaging and 100% CO₂ with and without sodium lactate (0%, 2.4%, 4.8%), sodium acetate (0%, 0.25%, 0.50%), and sodium diacetate (0%, 0.25%, 0.50%) on the inhibition of L. monocytogenes on turkey frankfurters. After 4 weeks at 4°C, the counts of L. …
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Effects of misting and modified atmosphere packaging on nutrient and market quality of broccoli
Restriction data tranferred 2014-07-01T11:15:51-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission
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Use of modified atmosphere packaging to extend the shelf-life of whole and pre-cut lettuce
This thesis investigated the potential of using modified atmosphere packaging (MAP) to maintain the quality of whole and pre-cut lettuce for longer periods than that currently obtained in air. Achieving this goal will enable whole lettuce to be exported to South-East Asia and Japan by ship rather …
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Effect of modified atmosphere packaging on growth of Listeria monocytogenes and nonproteolytic Clostridium botulinum in cooked turkey
… separately under varying conditions of modified atmosphere packaging (MAP), refrigerated and temperature-abuse storage, and lactic acid bacteria (LAB) competition. L. monocytogenes (LM) growth was suppressed when initially outnumbered 3.5 logs:1 or 2.1 logs:1 by naturally-occurring LAB, …
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The effect of modified atmosphere packaging (MAP) on the shelf- life of refrigerated, cubed turkey thigh meat
… was designed to investigate the effect of Modified Atmosphere Packaging (MAP) on the shelf life of refrigerated, cubed, turkey thigh meat. Modified atmospheres of 25% carbon dioxide and 75% nitrogen and 20% carbon dioxide, 60% oxygen, and 20% nitrogen were used for MAP1 and MAP2 …
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The Effects of Modified Atmosphere Packaging on Toxin Production by Clostridium botulinum in Raw Aquacultured Flounder Fillets and Fully Cooked Breaded and Battered Pollock Portions
Fish products under vacuum (VAC) and/or modified atmosphere packaging (MAP) conditions can have a significantly extended shelf life. Prevention of toxin production by Clostridium botulinum is essential for processors of VAC and MAP refrigerated fishery products. The objective of this study was to …
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Understanding consumer liking of beef with particular reference to flavour
… 21 or 49 days), muscles (rump, striploin) and packaging methods (vacuum skin packaging, overwrapped, modified atmosphere packaging) had significant impact on the quantities of volatile compounds. Beef aged for longer period had higher quantities of Strecker aldehydes, n-ketones and pyrazines. …
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Development and assessment of new sensor systems in food packaging applications
… This technology can be used for optimization of packaging processes, improvement of product shelf-life and maintenance of quality. In recent years, there has been a major focus on O2 and CO2 sensor development as these are key gases used in modified atmosphere packaging (MAP) of food. The first …
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Survival of Escherichia coli O157:H7 on cut and whole surfaces of spinach and leaf lettuce, packaged under modified atmospheric conditions
… of lettuce and spinach on the market is sold in modified atmosphere packaging as ready to eat salad mixes. The objectives of this study were to determine the effects of modified atmosphere, storage temperature, and inoculum size on survival of E. coli O157:H7 on cut and whole leaf lettuce and …
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Use of modified atmosphere technology to maintain quality of direct-set cottage cheese
… Previous studies have demonstrated that modified atmosphere packaging (MAP) is able to maintain cottage cheese quality and extend shelf-life over air packaging. The objectives of our study were to evaluate the ability of MAP to maintain cottage cheese quality, while establishing the …
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New product development in the UK trout industry
… and 2 the availability of new processing and packaging technology. In response to retailer demand the modified atmosphere packaging technique was applied to chilled fresh trout and smoked trout products. These products utilise weight grades of fish which were previously sold unprofitably to …
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Factors affecting the quality and shelf-life of cooked chilled foods with special reference to full meal vending.
… result in high food wastage rates. Vacuum and modified atmosphere packaging (MAP) are known to improve stored raw food quality. In order to optimize the quality and shelf-life of vended foods, the effects of these techniques and length of storage time on menu items were studied. Chicken …
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Application of chromatographic and spectroscopic techniques in the evaluation of the lipid fraction of animal products
… parameters like feeding fat sources, packaging, processing and storage conditions. To achieve this goal capillary gas chromatography (CGC) was employed not only to determine the fatty acids profile but also, after solid phase extraction, the amount of free fatty acids (FFA), …
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The phenotypic and molecular responses of Listeria monocytogenes to stressors
… growth under refrigeration conditions and within modified atmosphere packaging. Through transcriptional and translational changes L. monocytogenes is able to mount adaptive responses against stressors. Such responses typically cross protect against subsequent stresses, including effectors of the …
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Preventing Oxidation of Dairy Powders Using Oxygen Removal Packaging
… nonfat, and buttermilk) were packaged in a modified atmosphere with a novel palladium-based oxygen removing catalyst and stored for eight weeks at 50°C. Powders stored in air with no catalyst and powders stored with the catalyst in an atmosphere modified to contain 5.7% hydrogen in nitrogen …
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Real-time PCR for diagnosis of botulism and quantification of neurotoxin gene expression in Clostridium botulinum
… factors, food preservatives, and type of packaging on microbial growth and virulence expression is very important. Quantitative reverse transcription PCR (qRT-PCR) and enzyme-linked immunosorbent assay (ELISA) were used to monitor the neurotoxin expression in C. botulinum types A, B, and …
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Use of Antimycotics, Modified Atmospheres, and Packaging to Affect Mold Spoilage in Dairy Products
… oxygen scavengers and a 25% CO₂:75% N₂ modified atmosphere on the growth of <I>Penicillium roqueforti</I> in shredded cheddar and mozzarella cheese stored at 10°C for 0, 60, 120, or 180 day was studied. Microbiological and sensory testing was assessed on 0, 7, 14 and 21 days after …
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Use of oxygen sensors for the non destructive measurement of oxygen in packaged food and beverage products and its impact on product quality and shelf life
… O2 sensors to be incorporated into food/beverage packaging systems to continuously monitor O2 levels in a non-destructive manner immediately postpackaging and over time. Residual levels of O2 present in packs can negatively affect product quality and subsequently, product shelf-life, especially …
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