| 水溶性大豆多糖的分子表征和溶液流变学性质 |
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| 引用本文： | 杨慧娇,蔡志祥,张洪斌,常忠义.水溶性大豆多糖的分子表征和溶液流变学性质[J].食品科学,2016,37(1):1-5. |
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| 作者姓名： | 杨慧娇 蔡志祥 张洪斌 常忠义 |
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| 作者单位： | 1.上海交通大学化学化工学院高分子科学与工程系，流变学研究所，上海 200240；
2.华东师范大学生命科学院生物化学与分子生物学系，上海 200241 |
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| 摘 要： | 采用核磁共振方法和凝胶渗透色谱（gel permeation chromatography，GPC）技术测定了水溶性大豆多糖（soluble soybean polysaccharides，SSPS）的酯化度和分子质量，并研究了SSPS在水溶液中的分子构象和流变学性质。结果表明，核磁共振方法可以快速准确地测定SSPS的酯化度，水溶液中SSPS呈紧密的无规线团构象，具有很低的本征黏度，SSPS水溶液表现出很强的剪切变稀行为，并具有明显的触变性。
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| 关 键 词： | 水溶性大豆多糖 酯化度 分子参数 构象 流变特性 |
Molecular Characterization of Soluble Soybean Polysaccharide and Rheological Properties of Its Aqueous Solution |
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| YANG Huijiao,CAI Zhixiang,ZHANG Hongbin,CHANG Zhongyi.Molecular Characterization of Soluble Soybean Polysaccharide and Rheological Properties of Its Aqueous Solution[J].Food Science,2016,37(1):1-5. |
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| Authors: | YANG Huijiao CAI Zhixiang ZHANG Hongbin CHANG Zhongyi |
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| Affiliation: | 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 |
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| Abstract: | 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. |
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| Keywords: | soluble soybean polysaccharides (SSPS) degree of esterification (DE) molecular parameter conformation rheological property |
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