The optimal extraction conditions of Stephania delavayi Diels were as follows: refluxing and extracting with 9-fold 95% alcohol(pH=4.5) for two hours twice.

• 综合考虑各种因素；金不换总生物碱的最佳提取工艺为9倍量p=4.；5 95%25乙醇提取2次；每次2小时