title: Antioxidant activity of polyphenols from Hypericum triquetrifolium Turra.
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.
authors.affiliation: Department of Pharmacy, Division of Pharmacognosy, University of Athens, Panepistimioupolis Zografou, 157 71 Athens, Greece.
authors.forename: Maria
authors.initials: M
authors.lastname: Couladis
authors.forename: Paraskevi
authors.initials: P
authors.lastname: Baziou
authors.forename: Eumorfia
authors.initials: E
authors.lastname: Verykokidou
authors.forename: Anargyros
authors.initials: A
authors.lastname: Loukis
mesh_terms: D000975:Antioxidants / Q000737:chemistry*; D047310:Apigenin; D044946:Biflavonoids; D002726:Chlorogenic Acid / Q000737:chemistry; D005419:Flavonoids / Q000737:chemistry; D006801:Humans; D020902:Hypericum; D008517:Phytotherapy; D010936:Plant Extracts / Q000737:chemistry*; D011794:Quercetin / Q000737:chemistry; D012431:Rutin / Q000737:chemistry
chemical_list: D000975:Antioxidants; D044946:Biflavonoids; D005419:Flavonoids; D010936:Plant Extracts; C446502:biapigenin; D002726:Chlorogenic Acid; D012431:Rutin; D047310:Apigenin; D011794:Quercetin