方法：采用溶剂分离法结合柱色谱法进行成分分离。
METHODS:To isolate the flavonoides and sitosterol derivants, the solvent extraction together with the column, chromatography and TLC methods were used.
采用溶剂分离法分离紫胶片得到的硬树脂含量为65.1%，软树脂含量为28.2%。
In the lac resin, the content of hard resin is 65.1%, the content of soft resin is 28.2%.
本文对有机溶剂的回收方法，如吸附法、吸收法、冷凝法和膜分离法等的研究进展与应用进行了综述。
The research progress and application of technologies for organic solvent recovery, such as adsorption, absorption, (condensation), and membrane technology, are reviewed.
应用推荐