METHODS Indicated by the content of sennoside A, the conditions of residue solvent extraction and resin purification were determined by single factor trial.

• 方法番泻苷A为指标；以单因素考察确定药渣溶剂提取与树脂精制条件。结果8倍水浸泡过夜；煎煮4次；每次0.；5h;