Abstract: Natural starch was distilled through a wet method from Zhengzhou 9023 wheat powders, appearances, swelling properties and molecular weight distribution were studied. The results showed that natural starch from Zhengzhou 9023 wheat were composed of amylase, intermediate and amylopectin, structures of starch granules were presented circular or oval under the optical microscope, the starch grain can be observed to have the layer veins and hilum, and also the black birefringence disappeared gradually while the wheat starch were gelatinized under different temperature and time, and birefringence disappeared com-pletely when temperature was 80℃; granular size, swelling power and solubility of wheat starch in the paste all increased with the increase of heating time and temperature.

Key words: wheat starch, appearance, swelling property, granular property