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。