J Ethnopharmacol. 2000 Aug; 71(3): 483-6.

Antioxidant activity of phenylethanoid glycosides from Brandisia hancei.

He ZD, Lau KM, Xu HX, Li PC, Pui-Hay But P.

Institute of Chinese Medicine and Department of Biology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, PR China.

Brandisia hancei is a medicinal herb in China. The ethanol extract of this plant and four phenylethanoid glycosides, acteoside (1), 2'-acetylacteoside (2), poliumoside (3) and brandioside (4), isolated from it were shown to have inhibitory effects on free radical-induced hemolysis of red blood cells and free radical scavenging activities in vitro. Brandioside (4) and poliumoside (3) showed stronger antioxidant effect than acteoside (1), 2'-acetylacteoside (2) and trolox.