title: Melatonin scavenges phenylglyoxylic ketyl radicals.
abstract: The antioxidant properties of melatonin were tested in this work by EPR technique. It was found that melatonin scavenges phenylglyoxylic ketyl radicals. Its effectiveness was 10-times lower than that of vitamin C. A new method of generation of phenylglyoxylic ketyl radicals by spontaneous decomposition of D,L-2,3-diphenyltartaric acid in propan-2-ol was used.
authors.affiliation: Institute of Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská dolina, 842 15 Bratislava 4, Slovakia. sersen@fns.uniba.sk
authors.forename: F
authors.initials: F
authors.lastname: Sersen
authors.forename: T
authors.initials: T
authors.lastname: Vencel
authors.forename: J
authors.initials: J
authors.lastname: Annus
mesh_terms: D000447:Aldehydes / Q000737:chemistry; D000975:Antioxidants / Q000737:chemistry*; D004578:Electron Spin Resonance Spectroscopy; D016166:Free Radical Scavengers / Q000737:chemistry*; D005609:Free Radicals / Q000737:chemistry*; D008550:Melatonin / Q000737:chemistry*; D010084:Oxidation-Reduction; D013644:Tartrates / Q000737:chemistry*
chemical_list: C503148:2,3-diphenyltartaric acid; D000447:Aldehydes; D000975:Antioxidants; D016166:Free Radical Scavengers; D005609:Free Radicals; D013644:Tartrates; C005556:propionaldehyde; D008550:Melatonin