Optimization for Extraction Technology of Polysaccharides from Chrysanthemum indicum by Orthogonal Experimental Design

Objective:To optimize extraction technology of the polysaccharides from Chrysanthemum indi-cum.Method:Based on the single factors test,factors such as material to solvent ratio,extraction temperature and extraction time were optimized by orthogonal test L9(34).Result: The optimal technology conditions were as fol-lows: extraction temperature was set at 90 ℃ and extraction time was 4 h with ratio of 1∶ 20.Conclusion: Under these conditions the polysaccharides yield of C.indicum was up to 3.32%.