Abstract
The microscopic structure of rice kernel is studied after sun drying in order to research theinitiation and propagation theory of stress cracks of rough rice. The microscopic structure of ricekernel is observed by Scanning Electronic Microscope. The structure of the endosperm tissue of ricekernel is damaged slightly after sun drying, and stress cracks are produced. The stress cracks arealso produced between the seed capsule and the endosperm tissue. The stress cracks aregenerated in the center of endosperm tissue first, then propagated. When stress cracks areproduced, both sides of the endosperm tissue are damaged. Others are not damaged. Most stresscracks are propagated along the edge of the starch granule, and through the cell wall. Themorphosis of endosperm tissue and microscopic structure of stress cracks of rice kernel areanalysed. It is important through the stress cracks of rough rice to improve the observationtechnology. It is significant in order to estimate the quality of rice after drying.
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