New phenolic compounds and antioxidant potential of Catharanthus roseus.
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.
Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS (CSIC), P.O. Box 164, 30100 Campus University Espinardo, Murcia, Spain.
Federico
F
Ferreres
David M
DM
Pereira
Patrícia
P
Valentão
Paula B
PB
Andrade
Rosa M
RM
Seabra
Mariana
M
Sottomayor
D030008:Catharanthus / Q000737:chemistry*; D016166:Free Radical Scavengers / Q000737:chemistry*; D013058:Mass Spectrometry; D010636:Phenols / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry; D018514:Plant Structures / Q000737:chemistry; D017382:Reactive Oxygen Species / Q000737:chemistry
D016166:Free Radical Scavengers; D010636:Phenols; D010936:Plant Extracts; D017382:Reactive Oxygen Species