Study on Freeze-drying Damage of Lactic Acid Bacteria Membrane

Abstract

Abstract: Freeze-drying can damage the cell membrane of lactic acid bacteria. These damages will include mechanical damage, solution effect damage, change in membrane permeability, DNA damage, proteins denaturation, damage in dynamic balance, and change in lipids of cell membrane. These different damages decrease will the survivability. To raise relevant methods to decrease freeze-drying damages will depend on the understanding damage mechanism. For example, finding optimal freeze velocity, using some cryoprotectants, changing genetic properties, and choosing excellent strains by natural selection will help lactic acid bacteriar esistf reeze-drying.

Key words: , freez-drying； lactic acid bacteria； cell membrane damage；

ZHU Lin, LIU Ning, ZHANG Ying-Hua, HUO Gui-Cheng. Study on Freeze-drying Damage of Lactic Acid Bacteria Membrane[J]. FOOD SCIENCE, 2006, 27(2): 266-269.

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Study on Freeze-drying Damage of Lactic Acid Bacteria Membrane

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