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Pattern of crack formation in rice grain as influenced by shape and orientation of cells
Author(s) -
Srinivas T.
Publication year - 1975
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740261006
Subject(s) - cleavage (geology) , materials science , orientation (vector space) , composite material , grain boundary , geometry , fracture (geology) , microstructure , mathematics
Stress cracks usually develop across the grain in rice, although longitudinal cracks also develop occasionally on one axis. On examination of sections of rice grain it was noticed that orientation of elongated cells provided cell wall continuation across the grain and also along the length in the dorsiventral axis. Cracks were found to develop easily along these cell wall lines. Crack formation was difficult in the lateral axis along the length since cell wall continuity was absent. However, when severely dried grains were suddenly wetted cracks developed even in this axis by disruption of cells along the cleavage path.