Crude extracts were extracted from Sophra japonica L.with 75 % alcohol.Rutin was obtained from the crude extracts by alkine extraction and acid precipitation.

用75%乙醇提取了槐花米中具有抗氧化活性的粗提物,然后通过碱提酸沉法从该粗提物中提取了芦丁,并制备了芦丁的水解产物槲皮素。