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High acyl gellan gums have been widely considered using as gelling biopolymers in colloidal products although their structure and chain conformation characteristics have been poorly understood. Five fractions of high acyl gellan gum (HG) with a molecular weight (Mw) ranging from 4.2 × 105 to 10.1 × 105, obtained by ultrasonic depolymerization from a native gellan, have been used to determine their...
We have investigated the scaling relationship between rheological behavior and concentration for both salt-free and saline solutions of hyaluronan (HA), and adopted three viscoelastic constitutive models to predict the linear/non-linear viscoelastic behavior of these aqueous solutions of HA with different molecular weights at different concentrations up to 20 mg/ml. A series of concentration equations...
The biological functions as well as physico-chemical properties of hyaluronan (HA), one of the most important and ubiquitous glycosaminoglycan in various organisms, are closely related to its molecular weight, molecular weight distribution and chain conformation. For this reason it is crucially important to make a reliable characterization of these parameters for HA in both chemical and clinical fields...
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