Dielectric variations of potato induced by irreversible electroporation under different pulses based on the cole-cole model

• Published in: IEEE transactions on dielectrics and electrical insulation Vol. 24; no. 4; pp. 2225 - 2233
• Main Authors: Yao, Chenguo, Zhao, Yajun, Liu, Hongmei, Dong, Shoulong, Lv, Yanpeng, Ma, Jianhao
• Format: Journal Article
• Language: English
• Published: New York IEEE 2017; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Cole-Cole model; Conductivity; Current measurement; Dielectric measurement; Dielectric properties; dielectric property; Dielectrics; Electric pulses; Electroporation; Equivalence; Frequency measurement; high-frequency irreversible electroporation; Irreversible electroporation; Potatoes; Pulse duration; Pulse measurements; Voltage measurement
• ISSN: 1070-9878; 1558-4135
• DOI: 10.1109/TDEI.2017.006305

To investigate dielectric property variations induced by electric pulses, equivalent doses of conventional irreversible electroporation (IRE) and high-frequency IRE were used to treat potato slices. The dielectric property of the potatoes were measured before and after treatment in the frequency band of 0.1 Hz-10 MHz, and then the Cole-Cole model was used to fit the experimental data in the frequency band of 1 kHz-10 MHz to explain the β dispersion mechanism. The Cole-Cole model parameters showed that under an equivalent dose, the conventional IRE pulses were more efficient than the high-frequency IRE pulses for electroporation. After treatment with conventional IRE pulses, the DC conductivity greatly increased at time 0 after the pulses and showed little recovery over time. The electroporation effect of the high-frequency IRE pulses improved with increasing pulse duration. This study presents a potential new method for evaluating the effects of IRE during and immediately after the treatment process.