虎杖提取工艺初探

Preliminary Study on the Extractive Technique to Rhizoma Polygoni Cuspidati

对乙肝康君药虎杖进行单方水提、复方水提及７０％醇提工艺比较，结果７０％醇提，总蒽醌提取率为９６．７％，大黄素提取率为９６．１％，但经回收酒精，浓缩，干燥后，总蒽醌保留率为６８．９％，大黄素保留率为６５．６％。

Three kinds of extracting techniques to Rhizoma Polygoni Cuspidati(RPC)were comparatively studied. The three techniques were as follows: RPC alone and Yigankang formula as a whole with RPC as a main ingredient were extracted with water, and RPC alone was extracted with alcohol. The experimental result showed that the best technique was the last one, by which the extractive rates of total anthraquinone and emodin were 967% and 961%, respectively, but after recovering alcohol, concentrating and drying, the preserved total anthraquinone and emodin were 689% and 656% respectively.