A rapid general method for appraising the rheological properties of the starchy endosperm of cereal grains
1998
Haddad, Y. | Benet, J.C. | Abecassis, J.
A rapid, simple method was developed to prepare small, parallel-epipedal test samples of endosperm of wheat, corn, and rice grains. Compression tests performed on endosperm samples revealed the following mechanical properties: modulus of elasticity (E, GPa), breaking stress (sigma rup, MPa), and maximum breaking strain (epsilon rup, %). All tests were performed on several endosperm test samples of each cereal species. The results displayed good repeatability and several significant differences in the mechanical behavior of different endosperm structures, especially among soft, hard, and durum wheats. Rice and corn endosperm displayed mechanical behavior similar to that of durum wheat endosperm. The method proposed appears to be sufficiently sensitive and repeatable for studying the incidence of hardness and vitreousness of cereal grain endosperm in relation to its suitability for milling.
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