Four flavonoid glycosides from the pulps ofElaeagnus angustifolia and their antioxidant activities
Four flavonoid glycosides were isolated from the pulps of Elaeagnus angustifolia and identified as Quercetin 3,4-O-β-D-diglucoside (1),Isorhamnetin-3-O-β-D-galactopy -ranoside (2),Quercetin 3-O-β-D-Galactopyranoside-4-O-β-D-glucopyranoside (3) and Isorhamnetin 3-O-β-D-Galacto -pyranoside-4-O-β-D-glucopyranoside (4).Among which,the compounds 1,3 and 4 were isolated for the first time from this plant.The antioxidant activities of the four compounds were evaluated by measuring their reducing power and ability to scavenge the ABTS radical,DPPH radical and to inhibit superoxide anions.The results indicated that theses compounds exhibited antioxidant activities with a dose-dependent manner in all tested models,and had some structure-activity relationships.The order of potential antioxidant capacity was as follows:1>3>2>4.Considering related reports,the flavonoid might be responsible for antioxidant activity of pulps of E.angustifolia.
Elaeagnus angustifolia antioxidant activity flavonoid
Ya Wang Tao Guo Jia-yin Li Shang-zhen Zhou Ping Zhao Ming-Tao Fan
School of Life and Engineering, Lanzhou University of Technology.Lanzhou, China Northwest Agriculture Forestry University, College of Food Science and Engineering.Yangling, China
国际会议
太原
英文
1666-1669
2012-12-08（万方平台首次上网日期，不代表论文的发表时间）