title: Further isolation of peroxynitrite and 1,1-diphenyl-2-picrylhydrazyl radical scavenging isorhamnetin 7-O-glucoside from the leaves of Brassica juncea L.
abstract: From the leaves of Brassica juncea, an radical scavenging isorhamnetin 7-O-glucoside on peroxynitrite and 1,1-diphenyl-2-picrylhydrazyl (DPPH) was isolated and characterized based on the spectroscopic evidence. The compound showed the peroxynitrite and DPPH scavenging activities with IC50 values of 2.07 +/- 0.17 and 13.3 microM, respectively. Penicillamine and L-ascorbic acid as positive control exhibited radical scavenging activities with IC50 values of 3.17 +/- 0.39 and 12.78 microM, respectively.
authors.affiliation: Faculty of Food Science and Biotechnology, Pukyong National University, Pusan, Korea. choijs@pknu.ac.kr
authors.forename: Jae Sue
authors.initials: JS
authors.lastname: Choi
authors.forename: Mee Jung
authors.initials: MJ
authors.lastname: Jung
authors.forename: Hye Jin
authors.initials: HJ
authors.lastname: Park
authors.forename: Hae Young
authors.initials: HY
authors.lastname: Chung
authors.forename: Sam Sik
authors.initials: SS
authors.lastname: Kang
mesh_terms: D001713:Biphenyl Compounds; D044948:Flavonols; D016166:Free Radical Scavengers / Q000737:chemistry / Q000302:isolation & purification*; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D009149:Mustard Plant / Q000737:chemistry; D030421:Peroxynitrous Acid / Q000737:chemistry / Q000302:isolation & purification*; D010851:Picrates / Q000737:chemistry / Q000302:isolation & purification*; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D018515:Plant Leaves; D011794:Quercetin / Q000031:analogs & derivatives / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D001713:Biphenyl Compounds; D044948:Flavonols; D016166:Free Radical Scavengers; D005960:Glucosides; D010851:Picrates; D010936:Plant Extracts; C047368:3-methylquercetin; D030421:Peroxynitrous Acid; D011794:Quercetin; C004931:1,1-diphenyl-2-picrylhydrazyl