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Antioxidant activity of polyphenols from Hypericum triquetrifolium Turra
Maria Couladis1, Paraskevi Baziou, Eumorfia Verykokidou
1Department of Pharmacy, Division of Pharmacognosy, University of Athens, Panepistimioupolis Zografou, 157 71 Athens, Greece.
Phytotherapy Research : PTR
|November 30, 2002
Abstract:
From the aerial parts of Hypericum triquetrifolium Turra (Guttiferae) 3-8"-biapigenin, quercetin, rutin and chlorogenic acid were isolated. Their structures were elucidated by spectral techniques. Furthermore, the phenolic compounds were tested for antioxidant activity, using an in vitro method based on sodium arachidonoate, bleomycin and thiobarbituric acid with alpha-tocopherol as the reference solution.