Objective:To study the effect of Ⅱ ZTC1+1 natural clarifying agents used in Astragalus membranceus polysachride purification. Methods:The content of Astragalus membranceus polysachride determined by phenol-sulphuric acid,optimized by orthogonal experimentations to found the optimum technologyResults:The result showed that Ⅱ ZTC1+1 natural clarifying agents can improve the content of Astragalus membranceus polysachride effectively and its effect relates to the proportion of two components and temperature.Con...