Effect of Pretreatments and Solar Tunnel Dryer Zone on Drying Characteristics and Stability of Pumpkin (Cucurbita maxima) Slices

Figure 3

Moisture ratio of pumpkin slices versus time at different dryer zones for control (a), 1% citric acid solution for 20 minutes (b), 2% salt solution for 20 minutes (c), and blanched in 1% salt solution at 65 °C for 2 minutes (d).

(a)

(b)

(c)

(d)