An experimental method of bioimpedance measurement and analysis for discriminating tissues of fruit or vegetable

Department of Electronics, West Bengal State University, Barasat, Kolkata, India 700126

Received: 22 February 2020 Accepted: 22 March 2020 Published: 24 March 2020

Abstract
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It is difficult to apply bioimpedance technique to discriminate plant tissues due to the large variability of Cole parameters. A novel electronic method for characterizing tissue of fruit or vegetable with discrimination capability is presented. A specially designed electrode-pair is used to measure the bioimpedance and Cole parameters are extracted. The relaxation time which is a fundamental property of a given tissue is then estimated and analysis of variance is performed to gain statistical relevance. Bioimpedance is measured for apple and potato tissues in the frequency range of 1 Hz to 1 MHz and rigorous data analyses are performed. With 99% confidence, it is shown than the relaxation time is independent of position of measurement and is specific for a given fruit or vegetable. Further, the tissues of different species of a given fruit (or vegetable) is shown to be discriminated statistically at the confidence level of 98%. An excellent correlation is shown between the bioimpedance parameters and the parameters of cellular structure. Experimental data shows that our technique can be generalized to distinguish unhealthy or treated fruits (or vegetables) and therefore bearing immense applicability in the characterization of plant tissue.
- bioimpedance,
- Cole model,
- discrimination,
- electrical,
- measurement,
- tissue characterization
Citation: Arijit Roy, Abhishek Mallick, Surajit Das, Abhijit Aich. An experimental method of bioimpedance measurement and analysis for discriminating tissues of fruit or vegetable[J]. AIMS Biophysics, 2020, 7(1): 41-53. doi: 10.3934/biophy.2020004

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Abstract

It is difficult to apply bioimpedance technique to discriminate plant tissues due to the large variability of Cole parameters. A novel electronic method for characterizing tissue of fruit or vegetable with discrimination capability is presented. A specially designed electrode-pair is used to measure the bioimpedance and Cole parameters are extracted. The relaxation time which is a fundamental property of a given tissue is then estimated and analysis of variance is performed to gain statistical relevance. Bioimpedance is measured for apple and potato tissues in the frequency range of 1 Hz to 1 MHz and rigorous data analyses are performed. With 99% confidence, it is shown than the relaxation time is independent of position of measurement and is specific for a given fruit or vegetable. Further, the tissues of different species of a given fruit (or vegetable) is shown to be discriminated statistically at the confidence level of 98%. An excellent correlation is shown between the bioimpedance parameters and the parameters of cellular structure. Experimental data shows that our technique can be generalized to distinguish unhealthy or treated fruits (or vegetables) and therefore bearing immense applicability in the characterization of plant tissue.

Acknowledgment

The authors would like to thank to Dr. Debaprasad Mandal (Department of Zoology, West Bengal State University) for valuable discussion on samples used in this research work. The authors would also like to thank to Dr. A.R. Sherpa (Department of Botany, West Bengal State University) for providing microscope facility. The second author would like to acknowledge DST, Govt. of India for providing fellowship under “DST Inspire Fellow” scheme.

Conflict of interest

The authors declare no conflicts of interest.

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