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MLR and experimental testing for characterization and classification of damage resistance of maize hybrids based on mechanical properties
Author(s) -
Su Yuan,
Cui Tao,
Zhang Dongxing,
Xia Guoyi,
Gao Xiaojun,
He Xiaowei,
Xu Yang
Publication year - 2019
Publication title -
journal of food process engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 45
eISSN - 1745-4530
pISSN - 0145-8876
DOI - 10.1111/jfpe.13262
Subject(s) - hybrid , endosperm , materials science , composite material , impact resistance , mathematics , horticulture , biology , botany
The mechanical properties of kernels and ears are important factors affecting the resistance of maize hybrids of mechanical impact. The mechanical properties of kernels and ears and broken rate (BR) of 28 hybrids were determined by uniaxial compression, shear, and hardness tests under standard operating conditions. A strong correlation was found between the BR and the mechanical properties of all maize hybrids, including the compression stress of the kernels in the X ‐axis and Z ‐axis, the shear force in the X ‐axis, the rupture force of the ears, and the hardness of the endosperm. Three‐element BR model was developed to determine the relationship between the mechanical properties (compressive stress in the X ‐axis and Z ‐axis, hardness of horny endosperm) and the BR to characterize the resistance of maize hybrids to mechanical damage ( R s 2 = 0.583). And all hybrids were classified into four groups based on those extracted characteristic mechanics, and the BR of each group has significant difference ( p < .01). Research on the damage resistance and mechanical properties of various maize hybrids provides a theoretical basis for varietal food processing methods. Practical Applications The rapidly increase in maize hybrids and planting area places higher requirements on maize kernel processing. The broken rate of kernels determines the damage resistance processing performance of maize hybrids. The identification of the best maize hybrids for the mechanical process requires a limited number of simple, practical, and reliable tests that are able to predict the potential broken rate. This study evaluated the damage resistance and mechanical properties of commonly used commercial maize hybrids and provides reference data to develop suitable conditions for harvesting, storing, and handling of maize.