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%醇提取了槐花米中具有抗氧化活性的粗提,然后通过碱提酸沉法从该粗提中提取了,制备了的水解产槲皮素。