Small-molecule antioxidants in marine organisms: antioxidant activity of mycosporine-glycine

摘要: Abstract The antioxidant activities of aqueous extracts tissues from four different marine species containing mycosporine-like amino acids were examined by their peroxyl radical-trapping abilities using the phosphatidylcholine peroxidation inhibition assay. coral trout ( Plectropomus leopardus ) lens extract had low oxidation activity; Porphyra tenera and Lissoclinum patella moderately strong while Palythoa tuberculosa showed greatest activity tested; last two contained mycosporine-glycine. In these sample extracts, mycosporine-glycine was reactive to radicals whereas iminomycosporine-like acids, shinorine, porphyra-334, palythine, asterina-330 palythinol, oxidatively robust. Purified inhibited radical-initiated autoxidation phosphaditylcholine in a concentration-dependent manner. These results suggest that may function as biological organisms.