[Quantitative assay method for total saponins in Panax quinquefolium Api]

This article adopts macro-reticular resins to separate and get rid of water soluble impurities such as carbohydrate in Panax quinquefolium so as to determine its total saponin content by spectrophotometry. This method also yields good results in determining the total saponins in P. ginseng ora solution. For the control or appraise of the quality of preparations containing P. quinquefolium or P. ginseng oral solutions this method has practice value.