采用丙酮—水、乙醇—水为溶剂提取银杏外种皮 ,并对经浓缩后的提取液分别采用萃取法、树脂吸附法富集有效成份 ,以紫外分光光度法测定各批提取物的总黄酮含量 (折合成芦丁 )。结果显示 ,以乙醇—水为溶剂提取 ,用树脂吸附法处理提取液 ,所得提取物的总黄酮含量最高 ;在相同的溶剂条件下 ,采用萃取法处理提取液 ,所得提取物的收率较好。 Ginkgo biloba exocarp was extracted with acetone-water and ethanol-water as solvents, and the concentrated extracts were enriched with extraction method and resin adsorption method respectively. The total flavonoids of the extracts were determined by UV spectrophotometry. Content (converted into rutin). The results showed that extracting with ethanol-water as the solvent and extracting the solution with the resin adsorption method resulted in the highest content of total flavonoids; under the same solvent conditions, the extraction solution was used to extract the extract, and the yield of the obtained extract was better. .