Kinetic drying experimental data and mathematical model for cupua?u pulp (Theobroma grandiflora) slices

摘要

This work examined experimentally the kinetics of drying cupua?u pulp (Theobroma grandiflorum) slices. The experimental runs were driven in a laboratory dryer, at temperatures of 50, 60 and 70 oC and an air drying velocity of 1.5 m/s. According to the kinetics study, increasing the temperature led to a decrease in drying time. The required drying times were 9.2, 8.1 and 7.3 hours for drying temperatures of 50, 60 and 70 oC respectively. The experimental drying curves were adjusted to Fick's diffusional model for an infinite lamina with shrinkage and Page model. The diffusion coefficients of the Fick model varied between 1.171 and 1.561 m/s2.