The contraction condition is determined as follows: 35% ethanol to wash off impurities,95% ethanol to wash down caudaside-glycosidase,with 0.91% of gross yield.

• 结果表明采用大孔吸附层析分离提取；35%25乙醇洗杂质；95%25乙醇洗脱皂苷；总皂苷得率为0.；91%25。