Rheological properties of Jinqian mushroom

A polysaccharide fraction JQPs was isolated and purified from Jinqian mushroom. In this study,the rheological properties of polysaccharide of JQPs were investigated.The viscoelastic properties were determined as a function of concentration and temperature by using rheometer. The results showed that the JQPs solution exhibited pseudoplastic flow behavior.The low concentration solution exhibited almost Newtonian flow behavior at low shear rate region. With the increase of shear rate,the viscosity decreased and the non- Newtonian behavior became more and more obvious.The storage modulus G' and loss modulus G″ were in correlation with temperature and frequency.With the increase in polysaccharide concentrations,the G' increased more rapidly than the G″. At the concentration of 2.0%,the polysaccharide solution showed weak gel behavior. With the increase in polysaccharide temperature,the G' decreased more rapidly than the G″,the polymer solution( 2.5%) revealed weak gel behavior at 15℃. The study could provide theoretical foundation and reference for JQPs application in food industry.