After a long process of experiment, finally isolate the active fraction from Flos Daturae for psoriasis with Sephadex LH-20 column chromatography and water-methol solvent system successly.

• 本文经过长期反复的摸索,最终采用葡聚糖凝胶(Sephadex LH-20)柱色谱以水-甲醇溶剂系统成功地对洋金花治疗银屑病的有效部位进行了分离。