Electrical behavior of Garut citrus fruits curing ripening changes in resistance and capacitance models of internal fruits

Abstract

The electrical behavior of garut citrus fruits have been studied using impedance measurement at various leves of acidity, firmness, and frequencies.This research has been done as a step in order to study the internal citrus properties taht do not damage it. So, the aim of the present study was to investigate the behavior of electrical properties and modeling of citrus fruits including internal resistance and its capacitance changes using nondestructive test. Electrical circuit models have been constructed using series and parallel configurations adopted from literature. The new models has been constructed on the based of the internal structure of citrus fruits. In the specific parameters of the resistor and capacitor which describes the internal condition of fruit, the results of simulations have high compatibility and the best deterministic coefficient is the new model. Profile graphs of electrical modeling results have shown the same form with the experimental results. Electrical conductance of intact citrus Garut increased exponentially while the impedance and capacitance decreases exponentially whilethe impedance and capacitance decreases exponentially when the frequency is increased.