Using continuous circumfluence extraction and ultrasonic extraction to extract astragaloside,flavonoids and polysaccharide from three kinds of roots and determined quantity with colorimetry.

• 采用连续回流提取法和超声波提取法提取蒙古黄芪、膜荚黄芪和天然黄芪根中的皂苷、黄酮、多糖,比色法测定其质量分数。