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Article

Novel Conductive Polymer Composite PEDOT:PSS/Bovine Serum Albumin for Microbial Bioelectrochemical Devices

by
Sergei E. Tarasov
1,
Yulia V. Plekhanova
1,
Aleksandr G. Bykov
1,
Konstantin V. Kadison
2,
Anastasia S. Medvedeva
2,
Anatoly N. Reshetilov
1 and
Vyacheslav A. Arlyapov
2,*
1
G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Pushchino Center for Biological Research of the Russian Academy of Sciences, 5 Prosp. Nauki, Pushchino, 142290 Moscow, Russia
2
Federal State Budgetary Educational Institution of Higher Education, Tula State University, 300012 Tula, Russia
*
Author to whom correspondence should be addressed.
Sensors 2024, 24(3), 905; https://doi.org/10.3390/s24030905
Submission received: 25 December 2023 / Revised: 26 January 2024 / Accepted: 29 January 2024 / Published: 30 January 2024

Abstract

A novel conductive composite based on PEDOT:PSS, BSA, and Nafion for effective immobilization of acetic acid bacteria on graphite electrodes as part of biosensors and microbial fuel cells has been proposed. It is shown that individual components in the composite do not have a significant negative effect on the catalytic activity of microorganisms during prolonged contact. The values of heterogeneous electron transport constants in the presence of two types of water-soluble mediators were calculated. The use of the composite as part of a microbial biosensor resulted in an electrode operating for more than 140 days. Additional modification of carbon electrodes with nanomaterial allowed to increase the sensitivity to glucose from 1.48 to 2.81 μA × mM−1 × cm−2 without affecting the affinity of bacterial enzyme complexes to the substrate. Cells in the presented composite, as part of a microbial fuel cell based on electrodes from thermally expanded graphite, retained the ability to generate electricity for more than 120 days using glucose solution as well as vegetable extract solutions as carbon sources. The obtained data expand the understanding of the composition of possible matrices for the immobilization of Gluconobacter bacteria and may be useful in the development of biosensors and biofuel cells.
Keywords: conductive composite; PEDOT:PSS; Nafion; bovine serum albumin; microbial biosensor; microbial fuel cell; thermally expanded graphite; Gluconobacter oxydans conductive composite; PEDOT:PSS; Nafion; bovine serum albumin; microbial biosensor; microbial fuel cell; thermally expanded graphite; Gluconobacter oxydans

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MDPI and ACS Style

Tarasov, S.E.; Plekhanova, Y.V.; Bykov, A.G.; Kadison, K.V.; Medvedeva, A.S.; Reshetilov, A.N.; Arlyapov, V.A. Novel Conductive Polymer Composite PEDOT:PSS/Bovine Serum Albumin for Microbial Bioelectrochemical Devices. Sensors 2024, 24, 905. https://doi.org/10.3390/s24030905

AMA Style

Tarasov SE, Plekhanova YV, Bykov AG, Kadison KV, Medvedeva AS, Reshetilov AN, Arlyapov VA. Novel Conductive Polymer Composite PEDOT:PSS/Bovine Serum Albumin for Microbial Bioelectrochemical Devices. Sensors. 2024; 24(3):905. https://doi.org/10.3390/s24030905

Chicago/Turabian Style

Tarasov, Sergei E., Yulia V. Plekhanova, Aleksandr G. Bykov, Konstantin V. Kadison, Anastasia S. Medvedeva, Anatoly N. Reshetilov, and Vyacheslav A. Arlyapov. 2024. "Novel Conductive Polymer Composite PEDOT:PSS/Bovine Serum Albumin for Microbial Bioelectrochemical Devices" Sensors 24, no. 3: 905. https://doi.org/10.3390/s24030905

APA Style

Tarasov, S. E., Plekhanova, Y. V., Bykov, A. G., Kadison, K. V., Medvedeva, A. S., Reshetilov, A. N., & Arlyapov, V. A. (2024). Novel Conductive Polymer Composite PEDOT:PSS/Bovine Serum Albumin for Microbial Bioelectrochemical Devices. Sensors, 24(3), 905. https://doi.org/10.3390/s24030905

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