Molecular Structural Properties Of A Polysaccharide Isolated And Purified From Sophora Japonica Pods And Its Relationship To Their Rheology
INTERNATIONAL JOURNAL OF FOOD PROPERTIES(2017)
摘要
A water-soluble polysaccharide SJ-A presenting a relatively narrow molecular weight distribution was prepared by ethanol precipitation and purified from the pods of S. japonica. Chemical composition, molecular weight distribution, and glycosidic configurations of SJ-A were elucidated by sugar analysis, molecular determination, Fourier-transform infrared spectroscopy (FTIR), and nuclear magnetic resonance (NMR) analyses. The impacts of the concentration (0.5-2.0%) of SJ-A on the rheological parameters were investigated to clarify the molecular crosslinking features of SJ-A in relation to its rheological properties. The experimental results indicated that the microstructural coupling of the gel induced at higher concentrations of SJ-A required a higher frequency of the rheometer.
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关键词
Galactomannan, Gum, Hydrocolloid, Pod, Physicochemical properties, Rheology, Sophora japonica
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