A new kind of antioxidant test

A new kind of antioxidant test has been developed. The test is based on the indigo carmine decomposition in the presence of an organic matter, radical initiator and copper ions in the reaction mixture. The decomposition can b e inhibited by other added compounds followed by different absorbance decre ase which is considered as a stage of antioxidant activity. Antioxidant cap acity of phenolic compounds, aminoacids, ethanol, ascorbic acid and EDTA wa s measured during copper-cata-lysed-maltose decomposition in the presence o f peroxodisulfate as a radical initiator.