Column chromatography screening, the main inhibitory site in ethanol extracts of methanol chloroform (1:1) elution, water extracts 90% ethanol and 70% ethanol elution part.

• 柱层析分离筛选之后，抑菌部位主要发生在乙醇提取部位以甲醇：氯仿(1:1)洗脱部分，水提取部位90%25乙醇和70%25乙醇洗脱部分。