In each experiment, 103 g of fresh soybeans (bed
depth of 5 cm) was used. Drying experiments were
conducted at microwave powers of 200, 300, 400 and
500 W and air temperatures 80, 100, 120 and 140 °C
and air velocities of 1.8, 3.1 and 4.5 m/s, with three
replications. The experimental system was operated at
ambient conditions, i.e. average room air conditions of
17±1.6 °C and 34±2 % relative humidity.