Foodstuff Treatment Parameter Quantities Reference
Seedless grapes Microwave oven followed by hot air cabinet dryer (microwave of 900 W for 1 min and followed by hot air at 70°C for 30, 60 and 120 min Average Specific energy consumption (MJ/kgwater evaporated) 320.6 [72]
Hot air cabinet dryer followed by microwave oven (70°C for 30, 60 and 120 min and followed by microwave of 900 W for 1 min.) 371.0
Hot air cabinet dryer only (70°C for 60 min) 564.5
Pumpkin slices Air oven drying ( 50 and 75°C for 45-90 min) Energy consumption (kW h) 0.61-0.78 [113]
Microwave drying (Domestic microwave with 160 and 350 W for 125-195 min) 0.24-0.26
Combined microwave- air-drying for 31-51 min (160 W-50°C, 160 W-75°C, 350 W-50°C and 350 W-75°C) 0.33-0.40
Table 5: Energy consumption values for various drying methods.