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Study on Technology of Extracting Polysaccharides from Polygonatum with Water

HOU Shuang-ju,LIN Chao-qun,LU Jian,FANG Hong-mei,CHEN Cong-gui (School of Biology & Food Engineering, Hefei University of Technology,Hefei 230009,China)  
The effect of extraction temperature, time and the ratio of solid to liquid on extraction rate was studied by the method of single factor experiment. The orthogonal design was applied to analyze the influence of the three factors on the rate. The result of experiment showed that extraction temperature would chiefly affect the rate, the optimum parameters of the extraction technology were the ratio of solid to liquid 1∶30, extraction temperature 90℃ and extraction time 4 h, and the rate was 10.451% in this condition.
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