Abstract :

This study investigated the Opuntia ficus indica enermis cladodes water vapor sorption and drying process at different temperatures (60, 70 and 80 °C). The sorption isotherm followed a type II (sigmoidal: S shape) shape and thermal hysteresis effect with no intersection in curves for all three temperatures. The Guggenheim–Andersen–de Boer (GAB) model was found adequate to describe the sorption isotherms curves. Drying of prickly pear cladodes was completed in 5.5 h at a temperature of 80 °C, 6.5 hours at 70 ° C and at 60 ° C was 7.5 h. The two models two-term and logarithmic described the best the drying kinetics.