title: Rumex induratus leaves: interesting dietary source of potential bioactive compounds.
abstract: The phenolic compounds of Rumex induratus leaves were determined by HPLC-DAD-MS/MS-ESI. The results revealed a profile composed of 19 compounds: caffeoyl-hexoside, two p-coumaroyl-hexoside isomers, feruloyl-hexoside, sinapoyl-hexoside, 6-C-hexosyl-quercetin, 8-C-hexosyl-luteolin, 6-C-hexosyl-luteolin, 6-C-hexosyl-apigenin, 3-O-hexosyl-quercetin, 3-O-rutinosyl-quercetin, 7-O-hexosyl-diosmetin, 3-O-rutinosyl-isorhamnetin, 7-O-(acetyl)-pento-hexosyl-diosmetin, 6-C-hexosyl-genkwanin, and four unidentified O-glycosyl-C-glycosylflavones. The quantification of the identified phenolics by HPLC-DAD showed 6-C-hexosyl-luteolin as the main compound. Organic acid composition was determined by HPLC-UV, revealing a high content of oxalic acid. R. induratus was also investigated for its capacity to act as a scavenger of DPPH and superoxide radicals. Good antioxidative results were obtained against both radicals. Unlike other species of the genus Rumex, R. induratus did not present any anthraquinone derivative.
authors.affiliation: Research Group on Quality, Safety, and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS (CSIC), Campus University Espinardo (Murcia), Spain.
authors.forename: Federico
authors.initials: F
authors.lastname: Ferreres
authors.forename: Vítor
authors.initials: V
authors.lastname: Ribeiro
authors.forename: Angel Gil
authors.initials: AG
authors.lastname: Izquierdo
authors.forename: M Angelo
authors.initials: MA
authors.lastname: Rodrigues
authors.forename: Rosa M
authors.initials: RM
authors.lastname: Seabra
authors.forename: Paula B
authors.initials: PB
authors.lastname: Andrade
authors.forename: Patrícia
authors.initials: P
authors.lastname: Valentão
mesh_terms: D000880:Anthraquinones / Q000032:analysis; D002264:Carboxylic Acids / Q000032:analysis; D002851:Chromatography, High Pressure Liquid; D004032:Diet; D016166:Free Radical Scavengers / Q000032:analysis; D013058:Mass Spectrometry; D019815:Oxalic Acid / Q000032:analysis; D010636:Phenols / Q000032:analysis*; D018515:Plant Leaves / Q000737:chemistry*; D031804:Rumex / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D000880:Anthraquinones; D002264:Carboxylic Acids; D016166:Free Radical Scavengers; D010636:Phenols; D019815:Oxalic Acid