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

Table 1

Average, maximum and minimum temperature and relative humidity at three zones and ambient air recorded during drying time.

Zones of solar tunnel dryer	Temperature (°C) and RH (%) in parenthesis
	Average	Minimum recorded values	Maximum recorded values
Ambient air	()	22.9 (36.7)	33 (57.3)
Zone I	()	40.9 (28.2)	51.6 (42.7)
Zone II	()	48.9 (25.9)	58.6 (38.6)
Zone III	()	56 (21.0)	70 (27.0)

For both temperature and RH, the minimum values were observed in the morning (10 : 00 PM), whereas maximum values were observed from 12 : 00 to 15 : 00 AM. Sample .