Resumen

LOPES, Maria Aparecida da Silva et al. Physical properties of soybean grains, cotyledons and impurities. Rev. de Ciências Agrárias [online]. 2019, vol.42, n.4, pp.101-110. ISSN 0871-018X.  https://doi.org/10.19084/rca.18030.

Due to the diversity of the characteristics of the agricultural products and the possible presence of defects and impurities in a certain expressive quantity of grains, it is fundamental to know the physical properties of these materials, in order to assist in the design and design of equipment destined to post-harvest. Thus, the objective was to determine the physical properties for different proportions of soybean grains, cotyledons and impurities. The moisture content of the materials was determined in a forced air circulation oven. The physical properties were determined: bulk and true density, angle of rest, intergranular porosity and terminal velocity. The physical properties of soybeans vary when different proportions of cotyledons and impurities are inserted. The angle of repose increases with the greater amount of fine impurities and the intergranular porosity increases with the presence of coarse impurities; the bulk density is higher for whole grains, while increasing the true density for the coarse impurities. The grains, cotyledons, pods and impurities present variations in terminal velocity, being influenced by the moisture content, shape and size of the particles.

Palabras clave : Glycine max; cotyledons; pods; post-harvest.

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