Lipid peroxidation and oxidation of several compounds by H2O2 activated metmyoglobin

Abstract
Activated metmyoglobin (MetMb) by H2O2 initiates oxidation of microsomal unsaturated fatty acids, β-carotene and methional but not formate. Lipid peroxidation by activated MetMb was not inhibited by catalase. The activated species which initiaes lipid peroxidation appears to be a porphyrin cation radical, P + FeIV=O, and not a hydroxyl radical.