Microwave and Blanching Pretreatments for Hot Air Drying of Orange-Fleshed Sweet Potato Slices (Ipomoea batatas)

Figure 1

Variation of moisture ratio versus drying time for microwave-assisted drying (a) 385 W, (b) 541 W, and (c) 697 W and blanch-assisted drying (d) 3 mm, (e) 6 mm, and (f) 9 mm at 70°C.

(a)

(b)

(c)

(d)

(e)

(f)