A systematical rheological study of polysaccharide from Sophora alopecuroides L. seeds

Carbohydrate Polymers
Yan WuQingbin Guo

Abstract

The rheological properties of polysaccharide (SAP) from Sophora alopecuroides L. seeds were systematically investigated by fitting different models. The steady flow testing indicated that SAP exhibited shear-thinning behaviors, which were enhanced with increasing concentration and decreasing temperature. This was demonstrated quantitatively by Williamson and Arrhenius models. According to the generalized Morris equation, SAP exhibited random coil conformation with the potential to form weak gel-like network. On the other hand, multiple results of dynamic tests confirmed the viscoelastic properties of SAP, showing oscillatory behaviors between a dilute solution and an elastic gel. Furthermore, SAP solutions were thermorheologically stable without remarkable energetic interactions or structural heterogeneity, since their rheological patterns were successfully applied to Time-temperature superposition (TTS) principle, modified Cole-Cole analysis and Cox-Merz rule.

Citations

Jun 6, 2021·International Journal of Biological Macromolecules·Shen SongZengjie Fan
Jun 12, 2021·Colloids and Surfaces. B, Biointerfaces·Nandita SrivastavaAnirban Roy Choudhury
Dec 21, 2019·International Journal of Biological Macromolecules·Andressa Amado MartinMaria Rita Sierakowski
Aug 27, 2021·Journal of Food Science·Abdullah BaawadDong-Shik Kim

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