title: Isolation and characterization of phenolic antioxidants from Plantago herb.
abstract: Seven phenolic compounds, including a new phenylethanoid glycoside, were isolated from the ethyl acetate fraction of an aqueous ethanol extract of Plantago Herb (whole part of Plantago asiatica L.), which showed significant antioxidative activity. The new compound was characterized as 2-(3,4-dihydroxyphenyl)ethyl 3-O-β-D-allopyranosyl-6-O-caffeoyl-β-D-glucopyranoside on the basis of spectral and chemical evidence, and its antioxidant activity was comparable to that of tea catechins.
authors.affiliation: College of Pharmaceutical Sciences, Matsuyama University, Matsuyama, Ehime, Japan. amakura@cc.matsuyama-u.ac.jp
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Amakura
authors.forename: Ayako
authors.initials: A
authors.lastname: Yoshimura
authors.forename: Morio
authors.initials: M
authors.lastname: Yoshimura
authors.forename: Takashi
authors.initials: T
authors.lastname: Yoshida
mesh_terms: D000085:Acetates / Q000737:chemistry; D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification*; D002392:Catechin / Q000031:analogs & derivatives / Q000737:chemistry; D000431:Ethanol / Q000737:chemistry; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D010084:Oxidation-Reduction; D010636:Phenols / Q000737:chemistry / Q000302:isolation & purification*; D010936:Plant Extracts / Q000737:chemistry*; D010943:Plantago / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: C574345:2-(3,4-dihydroxyphenyl)ethyl-3-O-beta-D-allopyranosyl-6-O-caffeoyl-beta-D-glucopyranoside; D000085:Acetates; D000975:Antioxidants; D006027:Glycosides; D010636:Phenols; D010936:Plant Extracts; D014867:Water; D000431:Ethanol; C007650:ethyl acetate; D002392:Catechin; C045651:epigallocatechin gallate