Sajad Karami , Mohammed A. AlRuzzi , Chandler D. Stafford , Sulaiman K. Matarneh , Luis J. Bastarrachea
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引用次数: 0
Abstract
This study compared beef jerky produced by conventional cooking and UV-A light dehydration. The analyses included the isopiestic method, colorimetric analysis, electron microscopy, infrared spectroscopy, and microbial inactivation studies. The primary criterion was a water activity (aw) value of < 0.85 to optimize UV-A dehydration time, taking 4.5 h to achieve this level. UV-A light dehydration resulted in significantly less browning compared to conventional cooking, yielding a duller, less red product (P < 0.05). Electron microscopy showed that UV-A light dehydration maintained a more uniform microstructure, while conventional cooking caused more structural deffects. Microbial inactivation studies demonstrated the antimicrobial effect of UV-A light by reducing accessible water (aw < 0.85). The hygroscopicity of UV-A light dehydrated jerky was similar to conventionally cooked jerky. Overall, UV-A light-dehydrated beef jerky had similar characteristics to conventionally cooked jerky but with notable differences that could appeal to specific consumer preferences.
期刊介绍:
Official Journal of the European Federation of Chemical Engineering:
Part C
FBP aims to be the principal international journal for publication of high quality, original papers in the branches of engineering and science dedicated to the safe processing of biological products. It is the only journal to exploit the synergy between biotechnology, bioprocessing and food engineering.
Papers showing how research results can be used in engineering design, and accounts of experimental or theoretical research work bringing new perspectives to established principles, highlighting unsolved problems or indicating directions for future research, are particularly welcome. Contributions that deal with new developments in equipment or processes and that can be given quantitative expression are encouraged. The journal is especially interested in papers that extend the boundaries of food and bioproducts processing.
The journal has a strong emphasis on the interface between engineering and food or bioproducts. Papers that are not likely to be published are those:
• Primarily concerned with food formulation
• That use experimental design techniques to obtain response surfaces but gain little insight from them
• That are empirical and ignore established mechanistic models, e.g., empirical drying curves
• That are primarily concerned about sensory evaluation and colour
• Concern the extraction, encapsulation and/or antioxidant activity of a specific biological material without providing insight that could be applied to a similar but different material,
• Containing only chemical analyses of biological materials.