Modelagem da contração volumétrica em grãos de soja devido à secagem

Abstract

The physical properties of grains exert a big influence on the post-harvest processes, showing the necessity and importance of studying their behavior during the grain beneficiation process. The objective of this work was to evaluate the apparent and unitary volumetric contraction of the soybean at four different drying temperatures. The grains were dried in a mechanical convection oven. To determine the contraction index suffered by the grains during drying, mathematical models were used, and from them, the one that best fit and represented the behavior of the grain was chosen. It was verified that the Polynomial model presented a satisfactory adjustment for all temperatures, both in the apparent volumetric contraction and in the unitary one.