The sample of ginkgo biloba extracts was prepared by solvent extraction,column chromatography and solid phase extraction,the ginkgolic acids was purified by preparative HPLC.

• 通过萃取、层析和固相萃取等方法预处理银杏叶提取物,然后用HPLC制备色谱柱自制银杏酸纯品,结合紫外光谱、氢核磁共振和高效液相色谱,对银杏酸进行结构解析。