Escalante-Aburto Anayansi, Figueroa-Cárdenas Juan de Dios, Dominguez-Lopez Aurelio, García-Lara Silverio, Ponce-García Néstor
Tecnologico de Monterrey, The Institute for Obesity Research, Monterrey 64700, Mexico.
Centro de Investigación y Estudios Avanzados (CINVESTAV) Unidad Querétaro, Querétaro 76230, Mexico.
Foods. 2023 Feb 14;12(4):808. doi: 10.3390/foods12040808.
The viscoelastic properties of cereal kernels are strongly related to their quality, which can be applied to the development of a more selective and objective classification process. In this study, the association between the biophysical and viscoelastic properties of wheat, rye, and triticale kernels was investigated at different moisture contents (12% and 16%). A uniaxial compression test was performed under a small strain (5%), and the increase in viscoelasticity at 16% moisture content corresponded to proportional increases in biophysical properties such as the appearance and geometry. The biophysical and viscoelastic behaviors of triticale were between those of wheat and rye. A multivariate analysis showed that the appearance and geometric properties significantly influenced kernel features. The maximum force showed strong correlations with all viscoelastic properties, and it can be used to distinguish between cereal types and moisture contents. A principal component analysis was performed to discriminate the effect of the moisture content on different types of cereals and to evaluate the biophysical and viscoelastic properties. The uniaxial compression test under a small strain and the multivariate analysis can be considered a simple and non-destructive tool for assessing the quality of intact cereal kernels.
谷物籽粒的粘弹性特性与其品质密切相关，可应用于开发更具选择性和客观性的分类过程。在本研究中，研究了小麦、黑麦和小黑麦籽粒在不同水分含量（12%和16%）下生物物理特性与粘弹性特性之间的关联。在小应变（5%）下进行了单轴压缩试验，16%水分含量下粘弹性的增加对应于生物物理特性（如外观和几何形状）的成比例增加。小黑麦的生物物理和粘弹性行为介于小麦和黑麦之间。多变量分析表明，外观和几何特性显著影响籽粒特征。最大力与所有粘弹性特性都有很强的相关性，可用于区分谷物类型和水分含量。进行了主成分分析，以区分水分含量对不同类型谷物的影响，并评估生物物理和粘弹性特性。小应变下的单轴压缩试验和多变量分析可被视为评估完整谷物籽粒品质的一种简单且无损的工具。
