Effect of Localized Electrode/Pulp Tissue Conditions on Bipolar Measurements of Banana Samples Electrical Impedance

Impedance measurements collected using bipolar electrode configurations represent both tissue/electrode interface impedance and the impedance of tissues between electrodes. To evaluate how localized electrode/tissue interface conditions can impact measurements and their interpretation, electrical impedance of banana pulp samples with varying conditions of decaying tissue and electrode configurations were collected and compared. Changes in tissue impedance (represented as changes in the Cole-impedance model parameters) confirm that pulp samples with higher quantities of decaying tissue have lower resistance and higher peak frequency. Results support that while measurements are influenced by the localized electrode/tissue interface they are not dominated by them.