期刊
PHYTOCHEMISTRY
卷 103, 期 -, 页码 129-136出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.phytochem.2014.03.025
关键词
Elaeagnus angustifolia L.; Elaeagnaceae; Flavonoids; DPPH free radical scavenging activity; Tyrosinase inhibitory activity
资金
- CNRS
- MESR
- Conseil Regional Champagne Ardenne
- Conseil General de la Marne
- EU-programme FEDER
Seven acylated flavonol glycosides named elaeagnosides A-G, in addition to seven known flavonoids were isolated from the flowers of Elaeagnus angustifolia. Their structures were elucidated by different spectroscopic methods including 1D, 2D NMR experiments and HR-ESI-MS analysis. In order to identify natural antioxidant and tyrosinase inhibitor agents, the abilities of these flavonoids to scavenge the 1,1-dipheny1-2-picrylhydrazyl radical (DPPH) and to inhibit tyrosinase activity were evaluated. Results revealed that two of these compounds had significant anti-oxidant effect and one compound showed weak tyrosinase-inhibitory activity compared with kojic acid, quercetin, or ascorbic acid, which were used as positive control. (c) 2014 Elsevier Ltd. All rights reserved.
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