Study of Co2-Supercritical Fluid Extraction（SFE） of Constituents in “Seng-1deng” （SD）,a Traditional Tibetan Medicine

摘要

＜正＞ This new,recently developed extracting techniqne,Supercritical Fluid Extraction （SFE）,features manyadvantages in natural product extraction,such as a sa-tisfactory rate of extraction,a high isolation effect,and,when operated entirely free of residual solvents,lowcost.In the process of adopting CO2-SFE,we studiedits main components,maesopsin,and the traditionalTibetan medicine“Seng-ldeng”（SD）,which is thewooden elemant of the trunk of the Rhanmella gilgitica