FOOD SCIENCE ›› 2007, Vol. 28 ›› Issue (7): 264-267.

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Study on Extraction Technology of Polysaccharide from Eucommia ulmoides Leaves

 LIU  Jun-Hai, REN  Hui-Lan, DUAN  Yu-Lan, LI  Yan-Ling, HE  Juan   

  1. 1.College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252069, China; 2.Liaocheng Ehua Pharmacy Llimited Company, Liaocheng 252000, China
  • Online:2007-07-15 Published:2011-10-24

Abstract: In this paper,aiming at the extraction of Eucommia ulmoides leaves polysaccharide(EULP), test factors and levels were firstly selected by one factor tests. Next, on the basis of this and according to the Box-Benhnken center-united experimental design principles, the method of response surface analysis with 3 factors and 3 levels was adopted. Then, the factors influencing the technological condition were determined by means of regression analysis. Response surface and contour were finally graphed with the extraction rate of Eucommia ulmoides leaves polysaccharide as the response value. The results showed that the optim um conditions of Eucommia ulmoides leaves polysaccharide extraction are: the extraction temperature of 84 ℃, extraction time of 1.3 h, ratio of material to water of 1:14.3. On these conditions the extraction rate of Eucommia ulmoides leaves is up to l.7756% with one time extraction.

Key words: Eucommia ulmoides leaves polysaccharide, extraction, response surface analysis