The results indicated that a parabolic model was the best model to characterize the
drying kinetics of apple slices. The average values of determination coefficient (r2) varied between 0.9803
and 0.9933. The parabolic model had the lowest root mean square error (RMSE), mean bias error (MBE)
and chi-square (c2), the highest modeling efficiency and regression coincident. The values of effective
moisture diffusivity were ranged from 154.0650 1012m2 s1 to 397.6886 1012m2s1. Freezing
pretreatment had the highest effective moisture diffusivity value and maltose syrup immersion treatment
exhibited the lowest one.