title: Tyrosinase inhibitory activity of ethanol extracts from medicinal and edible plants cultivated in okinawa and identification of a water-soluble inhibitor from the leaves of Nandina domestica.
abstract: The tyrosinase inhibitory activity of the extracts of 53 parts of 36 plant species cultivated for edible and medicinal use in Okinawa was investigated. The extract of Nandina domestica showed potent activity among these. The inhibitor in the extract was purified by assay-guided fractionation to give a simple phenol glucoside. Although it was a known compound (4-beta-D-glucopyranosyloxybenzoic acid), its inhibitory activity toward tyrosinase is revealed for the first time in this work.
authors.affiliation: Faculty of Integrated Arts and Sciences, University of Tokushima, Tokushima 770-8502, Japan. masuda@ias.tokushima-u.ac.jp
authors.forename: Toshiya
authors.initials: T
authors.lastname: Masuda
authors.forename: Nao
authors.initials: N
authors.lastname: Fujita
authors.forename: Yuka
authors.initials: Y
authors.lastname: Odaka
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Takeda
authors.forename: Shigetomo
authors.initials: S
authors.lastname: Yonemori
authors.forename: Katsuo
authors.initials: K
authors.lastname: Nakamoto
authors.forename: Hideki
authors.initials: H
authors.lastname: Kuninaga
mesh_terms: D000383:Agriculture; D028141:Berberidaceae / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D004791:Enzyme Inhibitors / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D000431:Ethanol; D007564:Japan; D015394:Molecular Structure; D014442:Monophenol Monooxygenase / Q000037:antagonists & inhibitors* / Q000378:metabolism*; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology; D018515:Plant Leaves / Q000737:chemistry; D010945:Plants, Edible / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry; D014867:Water