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Vacuum Distillation and Freeze Drying
1979Vacuum distillation is based on the fact that under vacuum the boiling point of the materials is lower than at normal atmospheric pressure. The use of vacuum distillation for distilling off solvents is required where elevated temperatures would destroy the resolved components. Working with some biologically active materials which are dissolved in water,
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Cryobiology, 1990
Frozen suspensions of Streptococcus thermophilus were freeze-dried in a vacuum or a fluidized adsorbent bed at atmospheric pressure. Optimum operating conditions for each process were defined. For the duration of processing and survival rate of bacteria, in each case vacuum freeze-drying seemed more satisfactory than atmospheric pressure freeze-drying.
Wolff, Estelle +3 more
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Frozen suspensions of Streptococcus thermophilus were freeze-dried in a vacuum or a fluidized adsorbent bed at atmospheric pressure. Optimum operating conditions for each process were defined. For the duration of processing and survival rate of bacteria, in each case vacuum freeze-drying seemed more satisfactory than atmospheric pressure freeze-drying.
Wolff, Estelle +3 more
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MATHEMATICAL MODELING OF VACUUM FREEZE-DRYING KINETICS
Mathematical Methods in Technologies and Technics, 2021E. Mokhova, M. Gordienko
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Application and prospect of vacuum freeze drying technology in environmental field
Review of Scientific InstrumentsVacuum freeze-drying (VFD) technology has gained extensive application across various sectors, particularly in environmental applications, where it is primarily utilized for the fabrication of environmental functional materials and the conservation of environmental organisms. This technology is applicable to soil enhancement, the remediation of aquatic
Qingdan Liao, Dahua Yu, Xitong Li
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VACUUM‐PUFF FREEZE DRYING OF TROPICAL FRUIT JUICES
Journal of Food Science, 1971SUMMARY— A study was made to develop high Quality juice powders from four tropical fruits. Guava and mango puree, passion fruit and pineapple juice were dehydrated in a vacuum‐puff freeze‐drying process. Sucrose in amount (25–40%) approximating nectar formulations was mixed with single‐strength juice or puree ...
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Vacuum freeze-drying of tilapia skin affects the properties of skin and extracted gelatins
Food Chemistry, 2022Jian Zhong, Xichang Wang
exaly
The numerical simulation of vacuum freeze drying
Cryobiology, 1980Tsv.D. Tsvetkov, N.L. Vulchanov
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Vacuum Freeze Drying of Food Using Natural Zeolite
1986Vacuum freeze drying, using zeolite as an adsorbent of water vapour, was applied to food stuffs such as carrot and shrimp. As a result of our experiment, the following conclusions were drawn. (1) Time needed for drying can be shortened substantially, as compared with the conventional method, by circulating air current into layered beds of food stuffs ...
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