Rumex induratus leaves: interesting dietary source of potential bioactive compounds.
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.
Ferreres
Federico
F
Research Group on Quality, Safety, and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS (CSIC), Campus University Espinardo (Murcia), Spain.
Ribeiro
Vítor
V
Izquierdo
Angel Gil
AG
Rodrigues
M Angelo
MA
Seabra
Rosa M
RM
Andrade
Paula B
PB
Valentão
Patrícia
P
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
D000880:Anthraquinones; D002264:Carboxylic Acids; D016166:Free Radical Scavengers; D010636:Phenols; D019815:Oxalic Acid