Antioxidant properties of flavonol glycosides from green beans

摘要: AbstractWe have examined the antioxidant activity of one class polyphenolic compounds in green beans: two novel flavonol glycosides (quercetin 3-O-[xylosyl(1→ 2)]-rhamnosyl (1→6)-glucoside and corresponding kaempferol analogue), quercetin 3-O-glucuronide, 3-O-rutinoside 3-O-rutinoside. The Trolox equivalent capacity (TEAC) inhibition iron/ascorbate-induced lipid peroxidation phosphatidyl choline vesicles were measured. In aqueous phase TEAC assay, glucuronide rutinoside good antioxidants, but not as effective aglycone. values for other much lower than species similar to that Quercetin 3-O-glucuronide both potent inhibitors peroxidation, contrast those kaempferol. described herein demonstrate a...