Abstract

Dielectric properties of garlic were measured at 2450 MHz at moisture contents varying from 6% to 185% (dry basis) and at temperatures ranging between 35°C and 75°C, using the Resonant cavity perturbation technique. Both dielectric constant and loss factor were found to be directly proportional to the moisture content. The relationship of the dielectric constant as well as loss factor was found to be linear with temperature. Predictive models of the dielectric properties as functions of moisture content and temperature were developed using response surface methodology. Moisture content affected the penetration depth of microwaves significantly.

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