Abstract:To study the effects of non-starch polysaccharide on the rheological properties of starch，we determined the viscoelastic properties of the mixtures of corn starch/locust bean gum 1.2 ∶0，1.1 ∶0.1，1.0 ∶0.2，0.9 ∶0.3，0.8 ∶0.4（mass ratio）.The Power-Law model fitted the data of the static rheology with the correlation coefficient of more than 0.99.The fluid index was less than 1，indicating that the mixture was pseudoplastic fluid.With the increase in the proportion of locust bean gum，the consistency coefficient of mixture increased significantly，fluid index decreased，pseudoplasticity enhanced.When the ratio of corn starch and locust bean gum was less than 0.9∶0.3（mass ratio），the increase was no longer significant.Dynamic rheological tests showed that the elasticity was large and the viscosity was moderate if the ratio of corn starch to locust bean gum mass ratio was less than 0.9 ∶0.3（ mass ratio）.The elasticity was the smallest and the viscosity was the biggest when the ratio of corn starch to locust bean gum was 0.8 ∶0.4（mass ratio）.The mixtures of corn starch/locust bean gum showed better synergistic thickening effects.