Separation and purification of ginsenoside Rd

Separation and purification of ginsenoside Rf from ginseng root was studied.Total ginsenoside were extracted from ginseng root by methanol and Rf were separated from total ginsenoside by silica gel column.The result showed that 20.5 g total ginseboside was extracted from ginseng root and its yield was 4.10%.The main types in ginseng were Rg1,Re,Rf,Rb1,Rc,Rb2 and Rd.20.5 g ginsenoside was purified by silica gel column obtained 0.410 g Rf and its yields were 2.00% and 0.082% in total ginsenoside and ginseng root separately.Its purity was 93.0% detected by HPLC.