title: Effect of Lactarius piperatus fruiting body maturity stage on antioxidant activity measured by several biochemical assays.
abstract: The effects of fruiting body maturity on antioxidant activity and antioxidants production of the wild mushroom, Lactarius piperatus, were evaluated. Several biochemical assays were used to screen the antioxidant properties: reducing power, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging capacity, inhibition of erythrocytes hemolysis mediated by peroxyl radicals and inhibition of lipid peroxidation using the beta-carotene linoleate model system. The amounts of phenols, flavonoids, ascorbic acid, beta-carotene and lycopene present in the immature, mature and degraded fruiting bodies were also determined. The highest antioxidant contents and the lowest EC(50) values for antioxidant activity were obtained in the mature stage with immature spores.
authors: CIMO-Escola Superior Agrária, Instituto Politécnico de Bragança, Campus de Sta. Apolónia, Apartado 1172, 5301-855 Bragança, Portugal.
authors: Lillian
authors: L
authors: Barros
authors: Paula
authors: P
authors: Baptista
authors: Isabel C F R
authors: IC
authors: Ferreira
mesh_terms: D000975:Antioxidants / Q000032:analysis* / Q000378:metabolism / Q000494:pharmacology*; D001205:Ascorbic Acid / Q000032:analysis / Q000494:pharmacology; D001487:Basidiomycota / Q000737:chemistry*; D001713:Biphenyl Compounds; D002338:Carotenoids / Q000032:analysis / Q000494:pharmacology; D004305:Dose-Response Relationship, Drug; D004912:Erythrocytes / Q000187:drug effects; D005419:Flavonoids / Q000032:analysis / Q000494:pharmacology; D005504:Food Analysis / Q000379:methods*; D016166:Free Radical Scavengers / Q000378:metabolism; D006834:Hydrazines; D015227:Lipid Peroxidation / Q000187:drug effects; D000077276:Lycopene; D010084:Oxidation-Reduction; D010636:Phenols / Q000032:analysis / Q000494:pharmacology; D010851:Picrates; D013172:Spores, Fungal / Q000737:chemistry; D019207:beta Carotene / Q000032:analysis / Q000494:pharmacology
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D005419:Flavonoids; D016166:Free Radical Scavengers; D006834:Hydrazines; D010636:Phenols; D010851:Picrates; D019207:beta Carotene; D002338:Carotenoids; C004931:1,1-diphenyl-2-picrylhydrazyl; D001205:Ascorbic Acid; D000077276:Lycopene