[Antioxidative effect of mammalian liver hydrolyzate on lipid peroxidation]

The antioxidative effect of the mammalian liver hydrolyzate preparation (LH) was investigated mainly in the mouse liver homogenates. At lower concentrations, LH stimulated lipid peroxidation induced by Fe2+ and ascorbic acid in the homogenates, but inhibited completely the oxidation at higher concentrations. LH also inhibited the peroxidation of linolenic acid and linoleic acid. LH reduced 1,1-diphenyl-2-picrylhydrazyl, a free radical model, in a concentration-dependent manner, suggesting that the radical scavenging property of LH is involved in its antioxidative action. Fe2+ and glutathione, contained in LH, seem to act as a stimulator and an inhibitor of peroxidation, respectively.