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New phenolic compounds and antioxidant potential of Catharanthus roseus.

Authors
Type
Published Article
Journal
Journal of Agricultural and Food Chemistry
1520-5118
Publisher
American Chemical Society
Publication Date
Volume
56
Issue
21
Pages
9967–9974
Identifiers
DOI: 10.1021/jf8022723
PMID: 18850714
Source
Medline

Abstract

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.

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