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This paper concerns the properties of a few natural polysaccharides investigated in our laboratory. We also present the different techniques used in our group for a long time and their advantages to characterize polysaccharides. In a first part, the behavior of galactomannans with different chemical structures is discussed; the distribution of galactose units along the mannan backbone is very important...
The rheological properties of xanthan–gellan binary fluid gels at a total concentration of 0.1wt% were compared with individual xanthan and gellan solutions. Under steady shear, xanthan solutions showed a zero-shear viscosity and shear-thinning behavior that was adjusted to the Carreau model. In the absence of added salts, gellan solutions exhibited Newtonian behavior. Addition of monovalent and divalent...
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