The two heating techniques were also compared by power consumption as function of temperature in Fig. 2(b). During
microwave heating, power consumption fluctuates between 0-25 W before it stabilizes around 12 W, while temperature becomes stable around 190 1C. During conductive heating, power consumption fluctuates between 0 and 112 W and finally stabilizes around 50 W, which is four times higher than that of microwave heating.