Melatonin scavenges phenylglyoxylic ketyl radicals.
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.
Sersen
F
F
Institute of Chemistry, Faculty of Natural Sciences, Comenius University, Mlynská dolina, 842 15 Bratislava 4, Slovakia. sersen@fns.uniba.sk
Vencel
T
T
Annus
J
J
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*
C503148:2,3-diphenyltartaric acid; D000447:Aldehydes; D000975:Antioxidants; D016166:Free Radical Scavengers; D005609:Free Radicals; D013644:Tartrates; C005556:propionaldehyde; D008550:Melatonin