Abstract:

Cold water soluble cornstarch was prepared from original cornstarch by ethanol-medium alkaline catalysis. Atomic force microscope (AFM) was used to compare the microstructures of original and cold water soluble cornstarches. The transparency, solubility and coagulation of various starches were determined. Moreover, the conditions of reaction were optimized using orthogonal test. The experimental results showed that the prepared cold water soluble starch can be easily dissolved without significant residue.

Key words: cold water soluble starch, atomic force microscope (AFM), cornstarch