Abstract: In this study, the ultrastructural morphology of starch granules from 25 kinds of crops was in situ observed by scanning electron microscopy (SEM) and compared with starch granules extracted from potato and corn by the classical method. The classic extraction procedure had hardly any effect on the ultrastructural morphology of starch granules. In addition, spatial effects played a vital role in the morphological formation of starch granules in mature cereal grains with the exception of wheat, but had no impact on beans and root crops.

Key words: food starch, in situ observation, microscopy morphology, scanning electron microscopy (SEM), spatial effect