[OBJECTIVE]
The aim of study is to optimize the extraction process of Baihuasandi and to prepare a better effective and convenient drug.
[METHODS]
In this Study,Baihuasandi was extracted by 7 methods.Seven extracts were prepared for comparison of chemical constituents and pharmacological activity.This research was divided into two parts as follow.
1.The extraction methods were studied,with the nitidine chloride content and quercetin content determined by HPLC and dry extract ...