Determination of Saponin Content in Root, Stem and Leaf of Astragalus membranaceus

Saponin content in roots, Stems and leaves of Astragalus membranaceus was determined by comparing their colors. Results indicated that in roots of Astragalus membranaceus, content of saponins is 0. 261 6 %, and that of astragaloside Ⅳ is 0. 085 %. In leaves and stems of Astragalus membranaceus, content of saponins is 0.2162%, and that of astragaloside Ⅳ is 0.052%. Saponins of stems and leaves of Astragalus membranaceus can be used as medocone instead of roots of Astragalus membranaceus.