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%乙醇取了中具有抗氧化活性的,然后通过碱酸沉法从该中取了芦丁,并制备了芦丁的水解产槲皮素。