Abstract:

The physical and chemical properties of the caudex of Vallisneria Spinulosa Yan starch granules and paste were systematically studied. The caudex of Vallisneria Spinulosa Yan starch granules are uniform in shape comparatively, close to ellipse and taper with smooth surface and different size from 8 to 36μm.. The caudex of Vallisneria Spinulosa Yan starch is attributed to B-type crystal structure and the degree of crystallinity is 47.2%. The initial temperature of gelatinization is 66℃. The starch paste has low transparence, more freeze-thawing stability, and not easy retrogradation and aging characters. The viscosity reduces along with the shearing speed increasing, showing pseudo plastic characteristic.