interaction of hydrogen peroxide with molybdate; then, from the middle of the 20th century, this reaction began to be used for colorimetric determination of unreacted hydrogen peroxide in the catalase activity assay. The reaction became widely used after publications by Korolyuk et al. (1988) and Goth (1991). Direct UV measurement of the decrease in the concentration of hydrogen peroxide is also widely used after the publications by Beers & Sizer and Aebi. See also Enzyme kinetics Glutathione peroxidase Peroxidase Superoxide dismutase References External links EC 1.11.1 Antioxidants Hemoproteins Enzymes Catalysis Copper enzymes