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Advisor(s)
Abstract(s)
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.
Description
Keywords
Rumex induratus Phenolic compounds Oxalic acid Antioxidant activity
Citation
Ferreres, F.; Ribeiro, V.; Gil Izquierdo, A.; Rodrigues, M.A.; Seabra, R.M.; Andrade, P. B.; Valentão, P. (2006). Rumex induratus leaves: interesting dietary source of potencial bioactive compounds. Journal of Agricultural and Food Chemistry. ISSN 1520-5118. 54:16 (2006) p. 5782-5789
Publisher
ACS