FOOD SCIENCE ›› 2012, Vol. 33 ›› Issue (10): 98-102.doi: 10.7506/spkx1002-6630-201210020

• Processing Technology • Previous Articles     Next Articles

Optimization of Synthesis of Soluble Soybean Polysaccharide-Iron (II) Complex by Response Surface Methodology

HE Rui-xue1,2,GAO Wen-hong1,2,ZENG Xin-an2,ZHU Si-ming1,*   

  1. (1. College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China; 2. Guangzhou Institute of Modern Industrial Technology, Guangzhou 511458, China)
  • Online:2012-05-25 Published:2012-05-07

Abstract: In order to optimize the synthesis process of soluble soybean polysaccharide-iron (Ⅱ) complex, based on the single factor tests, a dual quadratic rotary combination design was used to analyze the effects of mass ratio between soluble soybean polysaccharide and catalyst sodium citrate, pH, reaction time and reaction temperature on iron content of SSPS-Fe (Ⅱ). A prediction model was established. The analysis of variance revealed that mass ratio and pH could significantly affect iron content of SSPS-Fe (Ⅱ). The optimal synthesis conditions were mass ratio between soluble soybean polysaccharide and catalyst sodium citrate of 1.89:1, pH 3.89, reaction time of 1.56 h and reaction temperature of 60.6 ℃. The iron content predicted by the model was 23.08%, which was consistent with the experimental value.

Key words: soluble soybean polysaccharide, ferrous, synthesis, response surface methodology

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