Fig. 6.

Convective drying kinetics of carrot slices with different pre-treatments (Control, Ethanol, Ethanol + US, Water + US; where MR is calculated in d.b according to Equation (2)). The curves are the data adjusted to the Page Model (Eq.2) and the shaded area indicates the standard deviation. Different moisture levels (in w.b.) are highlighted. Insert: the bar graph corresponds to the drying time to obtain different moistures (in % w.b). Vertical bars indicate standard deviation; different letters indicate statistically significant differences (p < 0.05) among treatments.