New Phenolic Compounds and Antioxidant Potential of Catharanthus roseus

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Federico Ferreres (Author) Other; David M Pereira (Author) Other; Patricia Valentao (Author) FFUP; Paula B Andrade (Author) FFUP; Rosa M Seabra (Author) Other; Mariana Sottomayor (Author) FCUP

Journal

Title: Journal of Agricultural and Food Chemistry

Vol. 56 No. 24

Pages: 9967-9974

ISSN: 0021-8561

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 76 Citations

Scopus - 89 Citations

Scientific classification

FOS: Agrarian Sciences > Other Agrarian Sciences

Other information

Authenticus ID: P-003-TXH

DOI: 10.1021/jf8022723

Resumo (PT): Screening of the phenolic compounds from seeds, stems, leaves and petals of Catharanthus roseus (L.) G. Don (cv. Little Bright Eye) was achieved by HPLC-DAD-ESI-MS/MS. This is the first detailed study of noncolored phenolics in C. roseus, which allowed the characterization of three caffeoylquinic acids and fifteen flavonol glycosides (di- and trisaccharides of kaempferol, quercetin and isorhamnetin). Fifteen compounds are reported for the first time in this species. The scavenging ability of the different plant matrices was assessed against DPPH• radical and against reactive oxygen (superoxide radical) and a reactive nitrogen (nitric oxide) species. A concentration-dependent protective effect was observed for seeds and tissues, with petals shown to be the most active. <br> <br> <a target="_blank" href="http://pubs.acs.org/doi/abs/10.1021/jf8022723"> Texto integral </a> <br> <br>

Abstract (EN): Screening of the phenolic compounds from seeds, stems, leaves and petals of Catharanthus roseus (L.) G. Don (cv. Little Bright Eye) was achieved by HPLC-DAD-ESI-MS/MS. This is the first detailed study of noncolored phenolics in C. roseus, which allowed the characterization of three caffeoylquinic acids and fifteen flavonol glycosides (di- and trisaccharides of kaempferol, quercetin and isorhamnetin). Fifteen compounds are reported for the first time in this species. The scavenging ability of the different plant matrices was assessed against DPPH center dot radical and against reactive oxygen (superoxide radical) and a reactive nitrogen (nitric oxide) species. A concentration-dependent protective effect was observed for seeds and tissues, with petals shown to be the most active.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8