Catalase (E.C.1.11.1.6) from human erythrocytes is heme-containing peroxisomal enzyme that breaks down hydrogen peroxide to water and oxygen.
In this work the effects of high pressure treatment and temperature on human catalase activity have been studied.
The human blood serum was subjected to high hydrostatic pressure in the range 12.5- 300 MPa at various temperatures up to 500C. The catalase activity was determined using the spectroscopy method based on hydrogen peroxide capability to form with Mo-salts the intensive colored complex.
It was revealed that antioxidant effect of blood serum under pressure has cyclic character.
There are some pressure regions where level of catalase activity was increased and decreased.
It was investigated the temperature effect at constant pressure on catalase activity as well. The obtained dependencies of catalase activity have the complex character.
The revealed results will be discussed in the work.

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