Fig. 4. Moisture content distribution map of mango slices generated by using the optimal PLS model. (a) Raw mango samples (without microwave treatment); (b)
representative mango samples during microwave-vacuum drying; (c) RGB image of the mango slice with 20.77% of moisture content. (For interpretation of the references to
colour in this figure legend, the reader is referred to the web version of this article.)