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 15 of 15 for “"vacuum packaging"”.
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A study of vacuum packaging methods for a microfabricated suspended tube reactor
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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Die-level glass frit vacuum packaging for a micro-fuel processor system
Vacuum packaging utilizing glass frit is investigated for the use with a micro-fuel processor. Enhanced device performance through proper thermal management motivates the need for a vacuum package on the micro scale. Constraints imposed by the design and fabrication of the micro-fuel processor deem …
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Lipid oxidation in food and model system
… that iron addition enhanced lipid oxidation. Vacuum packaging was effective in minimizing lipid oxidation in the cooked beef products. The thermal decomposition products of methyl arachidonate (oxidized 48 hrs at 37$\sp\circ$C) were separated by capillary GC and identified by GC/MS. Various …
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Towards a high-efficiency micro-thermophotovoltaic generator
… can be doubled by improving the view factor, vacuum packaging, and eliminating parasitic radiation from the edges of the reactor. By integrating simple one-dimensional silicon/silicon dioxide photonic crystal on the micro-reactor as spectral shaping device efficiency can reach 5%.
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Effect of different marinade treatments on survival and morphology of pathogens in beef jerky
… aureus and stored at ambient temperature under vacuum packaging for analysis at 7 day intervals up to 28 days. The parameters studied were pH, water activity and enumeration of microbial count. Every marinade used in this study was effective in reducing pathogen survival on inoculated beef jerky …
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Sensory and chemical characteristics of lamb, mutton and mechanically deboned turkey meat patties
… included: proximate analysis, pH determinations, packaging, storage conditions, oxidative rancidity, organoleptic evaluation, bacterial counts and quantitative measurement of headspace volatiles by gas chromatography (GC);Film type and storage time in the first experiment showed a highly …
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Inhibition of Listeria monocytogenes on frankfurters by modified atmosphere packaging and antimicrobials
… of 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 …
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Qualidade e conservação pós-colheita de frutos da jabuticabeira (Myrciaria cauliflora) sob atmosfera modificada ativa
… scheme (2x2), with two LDPE thicknesses and vacuum conditions (with and without), and four periods of evaluations, with three replicattions of 16 fruits each. The quality postharvest of jabuticabas was evaluated by the following treatments: T1 - Film LDPE (6μm) without partial vacuum (SV6 ), …
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An evaluation of the effectiveness of FreshCase® technology to extend the shelf life of beef and pork
… evaluated the effect of FreshCase®, a novel packaging technology that has been shown to extend the shelf life of whole muscle beef and ground beef, whole muscle pork and ground pork sausages by stabilizing fresh meat color. FreshCase® utilizes a high-barrier nitrite containing film in …
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Factors affecting the quality and shelf-life of cooked chilled foods with special reference to full meal vending.
… demand may 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. …
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Clostridium botulinum toxin development in refrigerated reduced oxygen packaged Atlantic croaker (Micropogonias undulatus)
… by Clostridium botulinum in refrigerated raw vacuum packaged croaker fillets, and to determine if toxin development precedes microbiological and/or organoleptic spoilage. Raw croaker fillets were vacuum packaged in oxygen-permeable films (OTR of 10,000 cc/m2/24hr or 3,000 cc/m2/24hr) and …
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Rapid bioluminometric enumeration of microorganisms in ground beef
… or 10°C using oxygen permeable or impermeable (vacuum) packaging. Excellent correlation (r²=0.95) was obtained for each inoculum and storage condition over the range of 5 x 10⁴ to 1 x 10⁹ cfu/g, when estimated APC values were compared with experimentally observed APC values. Usefulness of the …
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Modelling and Design Optimisations of CMOS MEMS Single Membrane Thermopile Detector Arrays
… additional air gaps between pixels, different packaging and different pixel sizes were assessed using numerical models. A design with copper heatsinking tracks and air gaps showed the best results, achieving an increase in responsivity by 6.4% while simultaneously reducing crosstalk by 65%. In …
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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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Development of consumer accepted low salt and low fat traditional Irish processed meats
Irish consumers (n = 1045) were surveyed with respect to their attitudes towards healthier food consumption, particularly in relation to salt and fat reduction. It appears educational campaigns have generally been adopted by respondents, as only a minority were not concerned about their diet; …