[Antioxidant properties of proteins after freezing-thawing].

S L Rozanova, E D Rozanova, O A Nardid

Index: Ukr. Biokhim. Zh. 84(1) , 53-9, (2012)

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Abstract

Experimental data are presented which were obtained under comparative evaluation of influence of different freezing-thawing conditions on antioxidant properties of isolated proteins: human serum albumin, cytochrome c from the horse heart and glucose oxidase from Aspergillus niger. The observed protein antioxidant activity alterations are assumed to be a result of protein conformational changes. The character of freezing-thawing influence on the protein antioxidant activity depends on the molecular structure and cooling conditions.