期刊
CARBOHYDRATE POLYMERS
卷 240, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2020.116316
关键词
Mesona chinensis Benth polysaccharide; Rice starch; Pasting; Water mobility; Interaction
资金
- Program of the National Natural Science Foundation of China [31972034]
- Natural Science Foundation of Jiangxi Province, China [20181ACB20013]
- National Youth Top-notch Talent Support Program of China
Interactions between starch and non-starch polysaccharides are very important for predicting and controlling the structure and function of starch-.based products. In this study, the effects of Mesona chinensis Benth poly-saccharide (MCP) on the pasting, rheological, structural, and water mobility properties of rice starch (RS)-MCP gels were evaluated. Results indicated that MCP can increase the pasting viscosity, and gel properties of RS-MCP gels. Rheological results showed that RS-MCP gels exhibited shear-thinning behavior and that MCP can enhance the viscoelasticity of RS-MCP gels. Fourier-transform infrared spectra results indicated no covalent interaction between RS and MCP, and MCP could increase the degree of short-range order of RS-MCP gels. MCP also enhanced the water-retention capacity of RS-MCP gels. Scanning electron microscopy results suggested that MCP could decrease the pore sizes of RS gels and the microstructure of RS gels became more ordered at 0.1 % concentration of MCP. The results suggested that the amylose and MCP molecules interacted through hydrogen bonds and electrostatic forces, which enhanced the gelling properties of RS-MCP gels. Overall, this study shows the potential applications of MCP, and also provides the theoretical basis of interactions in starch-hydrocolloids systems.
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