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Molecular Characterization of Soluble Soybean Polysaccharide and Rheological Properties of Its Aqueous Solution

YANG Huijiao1,2, CAI Zhixiang1, ZHANG Hongbin1,*, CHANG Zhongyi2,*   

  1. 1. Advanced Rheology Institute, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University, Shanghai 200240, China; 2. Department of Biochemistry and Molecular Biology,School of Life Science, East China Normal University, Shanghai 200241, China
  • Online:2016-01-15 Published:2016-01-15


The degree of esterification and molecular weight of soluble soybean polysaccharide (SSPS) were measured by
1H-NMR spectroscopy and gel permeation chromatography (GPC), respectively, and the conformation of SSPS in water
and the rheological properties of aqueous SSPS solution were investigated. It was found that the degree of esterification of
SSPS could be determined by using 1H-NMR accurately and rapidly. The experimental results also showed that SSPS chains
exhibited random coils with compact conformation in water, and that SSPS aqueous solutions possessed a very low intrinsic
viscosity, significant shear thinning behavior and thixotropy.

Key words: soluble soybean polysaccharides (SSPS), degree of esterification (DE), molecular parameter, conformation, rheological property

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