Abstract

INCREASING attention has been directed in recent years to the effects of freezing and thawing on the structural and functional integrity of various biological materials, especially from the point of view of low-temperature storage. At the level of isolated enzyme proteins, it has been shown that there exists a critical region of temperature in which some proteins are denatured during freezing and thawing. The range in which the maximal level of denaturation was produced is, for example, from − 12° C to − 75° C for catalase, and from − 20° C to − 72° C for myosin1,2.

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