Physicochemical Properties of a Novel Water-Soluble(1→3）(1→6）-α-D-Glucan

Abstract:

This paper studied physiochemical properties of the water-soluble(1→3）(1→6）-α-D-glucan from Leuconostoc.sp. SK24.002 by high performance liquid chromotagraphy，scanning electron microscope(SEM），Zeta Nano，thermogravimetry，differential scanning calorimetry and rotational rheometer. Surface morphology showed that the glucan had a porous structure and its particle size in water solution ranged from 40 to160 nm. It had a narrow and single weight distribution and a relatively high thermal stability and decomposed at 265~345 ℃. The viscosity increased exponentially with its concentration in the range of 5 to 10 g/100 mL，and concentrated solution showed typical shear-thinning behavior and possessed an obvious weak gel-like character.