Rumex induratus leaves: Interesting dietary source of potential bioactive compounds

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Federico Ferreres (Author) Other; Vitor Ribeiro (Author) Other; Angel Gil Izquierdo (Author) Other; Angelo A Rodrigues (Author) Other; Rosa M Seabra (Author) Other; Paula B Andrade (Author) FFUP; Patricia Valentao (Author) FFUP

Journal

Title: Journal of Agricultural and Food Chemistry

Vol. 54

Pages: 5782-5789

ISSN: 0021-8561

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 24 Citations

ISI Web of Science

Scopus - 31 Citations

Scientific classification

FOS: Agrarian Sciences > Other Agrarian Sciences

CORDIS: Health sciences

Other information

Authenticus ID: P-004-HYR

DOI: 10.1021/jf0613233

Resumo (PT): 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. <br> <br> Keywords: Rumex induratus; phenolic compounds; oxalic acid; antioxidant activity <br> <a target="_blank" href="http://pubs.acs.org/doi/abs/10.1021/jf0613233"> Texto integral</a> <br> <br>

Abstract (EN): 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-coumaroylhexoside 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-hexosylgenkwanin, 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8