Rumex induratus leaves: Interesting dietary source of potential bioactive compounds

• Tipo: Artigo em Revista Científica Internacional
• Data: 2006

Autores

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

Revista

Título: Journal of Agricultural and Food Chemistry

Vol. 54

Páginas: 5782-5789

ISSN: 0021-8561

Editora: American Chemical Society

Indexação

ISI Web of Knowledge - 24 Citações

ISI Web of Science

Scopus - 31 Citações

Classificação Científica

FOS: Ciências agrárias > Outras ciências agrárias

CORDIS: Ciências da Saúde

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8