title: Efficient radical scavenging ability of artepillin C, a major component of Brazilian propolis, and the mechanism.
abstract: Hydrogen transfer from artepillin C to cumylperoxyl radical proceeds via one-step hydrogen atom transfer rather than via electron transfer, the rate constant of which is comparable to that of (+)-catechin, indicating that artepillin C can act as an efficient antioxidant.
authors.affiliation: Redox Regulation Research Group, Research Center for Radiation Safety, National Institute of Radiological Sciences, Inage-ku, Chiba 263-8555, Japan. nakanis@nirs.go.jp
authors.forename: Ikuo
authors.initials: I
authors.lastname: Nakanishi
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Uto
authors.forename: Kei
authors.initials: K
authors.lastname: Ohkubo
authors.forename: Kentaro
authors.initials: K
authors.lastname: Miyazaki
authors.forename: Haruko
authors.initials: H
authors.lastname: Yakumaru
authors.forename: Shiro
authors.initials: S
authors.lastname: Urano
authors.forename: Haruhiro
authors.initials: H
authors.lastname: Okuda
authors.forename: Jun-Ichi
authors.initials: J
authors.lastname: Ueda
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Ozawa
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Fukuhara
authors.forename: Shunichi
authors.initials: S
authors.lastname: Fukuzumi
authors.forename: Hideko
authors.initials: H
authors.lastname: Nagasawa
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Hori
authors.forename: Nobuo
authors.initials: N
authors.lastname: Ikota
mesh_terms: D002392:Catechin / Q000737:chemistry; D016166:Free Radical Scavengers / Q000737:chemistry / Q000494:pharmacology; D005609:Free Radicals / Q000037:antagonists & inhibitors / Q000737:chemistry; D006859:Hydrogen / Q000737:chemistry; D007700:Kinetics; D019384:Nucleic Acid Synthesis Inhibitors; D010545:Peroxides / Q000037:antagonists & inhibitors / Q000737:chemistry; D010666:Phenylpropionates / Q000737:chemistry* / Q000494:pharmacology*; D011429:Propolis / Q000737:chemistry*
chemical_list: D016166:Free Radical Scavengers; D005609:Free Radicals; D019384:Nucleic Acid Synthesis Inhibitors; D010545:Peroxides; D010666:Phenylpropionates; C049375:perhydroxyl radical; C102259:artepillin C; D006859:Hydrogen; D002392:Catechin; D011429:Propolis