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Kharkova AS, Medvedeva AS, Kuznetsova LS, Gertsen MM, Kolesov VV, Arlyapov VA, Reshetilov AN. A "2-in-1" Bioanalytical System Based on Nanocomposite Conductive Polymers for Early Detection of Surface Water Pollution. Polymers (Basel) 2024; 16:1431. [PMID: 38794624 PMCID: PMC11125136 DOI: 10.3390/polym16101431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/02/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
This work proposes an approach to the formation of receptor elements for the rapid diagnosis of the state of surface waters according to two indicators: the biochemical oxygen demand (BOD) index and toxicity. Associations among microorganisms based on the bacteria P. yeei and yeast S. cerevisiae, as well as associations of the yeasts O. polymorpha and B. adeninivorans, were formed to evaluate these indicators, respectively. The use of nanocomposite electrically conductive materials based on carbon nanotubes, biocompatible natural polymers-chitosan and bovine serum albumin cross-linked with ferrocenecarboxaldehyde, neutral red, safranin, and phenosafranin-has made it possible to expand the analytical capabilities of receptor systems. Redox polymers were studied by IR spectroscopy and Raman spectroscopy, the contents of electroactive components were determined by atomic absorption spectroscopy, and electrochemical properties were studied by electrochemical impedance and cyclic voltammetry methods. Based on the proposed kinetic approach to modeling individual stages of bioelectrochemical processes, the chitosan-neutral red/CNT composite was chosen to immobilize the yeast association between O. polymorpha (ks = 370 ± 20 L/g × s) and B. adeninivorans (320 ± 30 L/g × s), and a bovine serum albumin (BSA)-neutral composite was chosen to immobilize the association between the yeast S. cerevisiae (ks = 130 ± 10 L/g × s) and the bacteria P. yeei red/CNT (170 ± 30 L/g × s). After optimizing the composition of the receptor systems, it was shown that the use of nanocomposite materials together with associations among microorganisms makes it possible to determine BOD with high sensitivity (with a lower limit of 0.6 mg/dm3) and detect the presence of a wide range of toxicants of both organic and inorganic origin. Both receptor elements were tested on water samples, showing a high correlation between the results of biosensor analysis of BOD and toxicity and the results of standard analytical methods. The results obtained show broad prospects for creating sensitive and portable bioelectrochemical sensors for the early warning of environmentally hazardous situations based on associations among microorganisms and nanocomposite materials.
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Affiliation(s)
- Anna S. Kharkova
- The Research Center «BioChemTech», Tula State University, 300012 Tula, Russia; (A.S.K.); (A.S.M.); (L.S.K.)
| | - Anastasia S. Medvedeva
- The Research Center «BioChemTech», Tula State University, 300012 Tula, Russia; (A.S.K.); (A.S.M.); (L.S.K.)
| | - Lyubov S. Kuznetsova
- The Research Center «BioChemTech», Tula State University, 300012 Tula, Russia; (A.S.K.); (A.S.M.); (L.S.K.)
| | - Maria M. Gertsen
- Laboratory of Soil Chemistry and Ecology, Tula State Lev Tolstoy Pedagogical University, 300026 Tula, Russia;
| | - Vladimir V. Kolesov
- Kotelnikov Institute of Radioengineering and Electronics (IRE) of Russian Academy of Sciences, 111250 Moscow, Russia;
| | - Vyacheslav A. Arlyapov
- The Research Center «BioChemTech», Tula State University, 300012 Tula, Russia; (A.S.K.); (A.S.M.); (L.S.K.)
| | - Anatoly N. Reshetilov
- Federal Research Center «Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences», G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, 142290 Pushchino, Russia;
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Kharkova A, Perchikov R, Kurbanalieva S, Osina K, Popova N, Machulin A, Kamanina O, Saverina E, Saltanov I, Melenkov S, Butusov D, Arlyapov V. Targeted Formation of Biofilms on the Surface of Graphite Electrodes as an Effective Approach to the Development of Biosensors for Early Warning Systems. BIOSENSORS 2024; 14:239. [PMID: 38785713 PMCID: PMC11118945 DOI: 10.3390/bios14050239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 04/30/2024] [Accepted: 05/01/2024] [Indexed: 05/25/2024]
Abstract
Biofilms based on bacteria Pseudomonas veronii (Ps. veronii) and Escherichia coli (E. coli) and yeast Saccharomyces cerevisiae (S. cerevisiae) were used for novel biosensor creation for rapid biochemical oxygen demand (BOD) monitoring. Based on the electrochemical measurement results, it was shown that the endogenous mediator in the matrix of E. coli and Ps. veronii biofilms and ferrocene form a two-mediator system that improves electron transport in the system. Biofilms based on Ps. veronii and E. coli had a high biotechnological potential for BOD assessment; bioreceptors based on such biofilms had high sensitivity (the lower limits of detectable BOD5 concentrations were 0.61 (Ps. veronii) and 0.87 (E. coli) mg/dm3) and high efficiency of analysis (a measurement time 5-10 min). The maximum biosensor response based on bacterial biofilms has been observed in the pH range of 6.6-7.2. The greatest protective effect was found for biofilms based on E. coli, which has high long-term stability (151 days for Ps. veronii and 163 days for E. coli). The results of the BOD5 analysis of water samples obtained using the developed biosensors had a high correlation with the results of the standard 5-day method (R2 = 0.9820, number of tested samples is 10 for Ps. veronii, and R2 = 0.9862, number of tested samples is 10 for E. coli). Thus, biosensors based on Ps. veronii biofilms and E. coli biofilms could be a novel analytical system to give early warnings of pollution.
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Affiliation(s)
- Anna Kharkova
- Federal State Budgetary Educational Institution of Higher Education, Tula State University, 300012 Tula, Russia; (A.K.); (R.P.); (K.O.); (O.K.)
| | - Roman Perchikov
- Federal State Budgetary Educational Institution of Higher Education, Tula State University, 300012 Tula, Russia; (A.K.); (R.P.); (K.O.); (O.K.)
| | - Saniyat Kurbanalieva
- N. D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Russia; (S.K.); (E.S.)
| | - Kristina Osina
- Federal State Budgetary Educational Institution of Higher Education, Tula State University, 300012 Tula, Russia; (A.K.); (R.P.); (K.O.); (O.K.)
| | - Nadezhda Popova
- Federal State Budgetary Institution of Science Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, 119071 Moscow, Russia;
| | - Andrey Machulin
- Institute of Biochemistry and Physiology of Microorganisms of the Russian Academy of Sciences—A Separate Subdivision of the FRC Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences, 142290 Pushchino, Russia;
| | - Olga Kamanina
- Federal State Budgetary Educational Institution of Higher Education, Tula State University, 300012 Tula, Russia; (A.K.); (R.P.); (K.O.); (O.K.)
| | - Evgeniya Saverina
- N. D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Russia; (S.K.); (E.S.)
| | - Ivan Saltanov
- Limited Liability Company “INNOBIOSYSTEMS”, 117342 Moscow, Russia; (I.S.); (S.M.)
| | - Sergey Melenkov
- Limited Liability Company “INNOBIOSYSTEMS”, 117342 Moscow, Russia; (I.S.); (S.M.)
| | - Denis Butusov
- Computer-Aided Design Department, Saint Petersburg Electrotechnical University “LETI”, 197022 Saint Petersburg, Russia;
| | - Vyacheslav Arlyapov
- Federal State Budgetary Educational Institution of Higher Education, Tula State University, 300012 Tula, Russia; (A.K.); (R.P.); (K.O.); (O.K.)
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3
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Yudina NY, Kozlova TN, Bogachikhin DA, Kosarenina MM, Arlyapov VA, Alferov SV. Electrochemical Biosensors for Express Analysis of the Integral Toxicity of Polymer Materials. BIOSENSORS 2023; 13:1011. [PMID: 38131771 PMCID: PMC10742246 DOI: 10.3390/bios13121011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/24/2023] [Accepted: 12/01/2023] [Indexed: 12/23/2023]
Abstract
Biosensors based on an oxygen electrode, a mediator electrode, and a mediator microbial biofuel cell (MFC) using the bacteria Gluconobacter oxydans B-1280 were formed and tested to determine the integral toxicity. G. oxydans bacteria exhibited high sensitivity to the toxic effects of phenol, 2,4-dinitrophenol, salicylic and trichloroacetic acid, and a number of heavy metal ions. The system "G. oxydans bacteria-ferrocene-graphite-paste electrode" was superior in sensitivity to biosensors formed using an oxygen electrode and MFC, in particular regarding heavy metal ions (EC50 of Cr3+, Mn2+, and Cd2+ was 0.8 mg/dm3, 0.3 mg/dm3 and 1.6 mg/dm3, respectively). It was determined that the period of stable functioning of electrochemical systems during measurements was reduced by half (from 30 to 15 days) due to changes in the enzyme system of microbial cells when exposed to toxicants. Samples of the products made from polymeric materials were analyzed using developed biosensor systems and standard biotesting methods based on inhibiting the growth of duckweed Lemna minor, reducing the motility of bull sperm, and quenching the luminescence of the commercial test system "Ecolum". The developed bioelectrocatalytic systems were comparable in sensitivity to commercial biosensors, which made it possible to correlate the results and identify, by all methods, a highly toxic sample containing diphenylmethane-4,4'-diisocyanate according to GC-MS data.
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Affiliation(s)
- Natalia Yu. Yudina
- Chemistry Department, Federal State Budgetary Educational Establishment of Higher Education, Tula State University, 300012 Tula, Russia; (N.Y.Y.); (V.A.A.)
| | - Tatyana N. Kozlova
- Laboratory of Ecological and Medical Biotechnology, Tula State University, Friedrich Engels Street 157, 300012 Tula, Russia; (T.N.K.)
| | - Daniil A. Bogachikhin
- Laboratory of Ecological and Medical Biotechnology, Tula State University, Friedrich Engels Street 157, 300012 Tula, Russia; (T.N.K.)
| | - Maria M. Kosarenina
- Chemistry Department, Federal State Budgetary Educational Establishment of Higher Education, Tula State University, 300012 Tula, Russia; (N.Y.Y.); (V.A.A.)
| | - Vyacheslav A. Arlyapov
- Chemistry Department, Federal State Budgetary Educational Establishment of Higher Education, Tula State University, 300012 Tula, Russia; (N.Y.Y.); (V.A.A.)
| | - Sergey V. Alferov
- Laboratory of Ecological and Medical Biotechnology, Tula State University, Friedrich Engels Street 157, 300012 Tula, Russia; (T.N.K.)
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Kuznetsova LS, Arlyapov VA, Plekhanova YV, Tarasov SE, Kharkova AS, Saverina EA, Reshetilov AN. Conductive Polymers and Their Nanocomposites: Application Features in Biosensors and Biofuel Cells. Polymers (Basel) 2023; 15:3783. [PMID: 37765637 PMCID: PMC10536614 DOI: 10.3390/polym15183783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 09/10/2023] [Accepted: 09/13/2023] [Indexed: 09/29/2023] Open
Abstract
Conductive polymers and their composites are excellent materials for coupling biological materials and electrodes in bioelectrochemical systems. It is assumed that their relevance and introduction to the field of bioelectrochemical devices will only grow due to their tunable conductivity, easy modification, and biocompatibility. This review analyzes the main trends and trends in the development of the methodology for the application of conductive polymers and their use in biosensors and biofuel elements, as well as describes their future prospects. Approaches to the synthesis of such materials and the peculiarities of obtaining their nanocomposites are presented. Special emphasis is placed on the features of the interfaces of such materials with biological objects.
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Affiliation(s)
- Lyubov S. Kuznetsova
- Federal State Budgetary Educational Institution of Higher Education, Tula State University, 300012 Tula, Russia
| | - Vyacheslav A. Arlyapov
- Federal State Budgetary Educational Institution of Higher Education, Tula State University, 300012 Tula, Russia
| | - Yulia V. Plekhanova
- Federal Research Center «Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences», G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, 142290 Pushchino, Russia
| | - Sergei E. Tarasov
- Federal Research Center «Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences», G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, 142290 Pushchino, Russia
| | - Anna S. Kharkova
- Federal State Budgetary Educational Institution of Higher Education, Tula State University, 300012 Tula, Russia
| | - Evgeniya A. Saverina
- Federal State Budgetary Educational Institution of Higher Education, Tula State University, 300012 Tula, Russia
- Federal State Budgetary Institution of Science, N.D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Russia
| | - Anatoly N. Reshetilov
- Federal Research Center «Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences», G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Russian Academy of Sciences, 142290 Pushchino, Russia
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Xu JM, Wu ZS, Zhao KJ, Xi ZJ, Wang LY, Cheng F, Xue YP, Zheng YG. IPTG-induced high protein expression for whole-cell biosynthesis of L-phosphinothricin. Biotechnol J 2023; 18:e2300027. [PMID: 37265188 DOI: 10.1002/biot.202300027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 04/20/2023] [Accepted: 05/19/2023] [Indexed: 06/03/2023]
Abstract
BACKGROUND Biocatalytic production of L-phosphinothricin (L-PPT) is currently the most promising method. In this work, we use an Escherichia coli strain coexpressing of D-amino acid oxidase and catalase (E. coli DAAO-CAT) to oxidation biocatalytic D-PPT to PPO, then use the second E. coli strain coexpressing glutamate dehydrogenase and formate dehydrogenase (E. coli GluDH-FDH) to reduce biocatalytic PPO to L-PPT. MAIN METHODS AND MAJOR RESULTS We compared the effects of different concentrations of IPTG or lactose on protein expression and enzyme activity in 5 L fermenter. The best induction conditions for E. coli DAAO-CAT were 0.05 mM IPTG, induction for 18 h at 28°C. The specific enzyme activities of DAAO and CAT were 153.20 U g-1 and 896.23 U g-1 , respectively. The optimal induction conditions for E. coli GluDH-FDH were 0.2 mM IPTG, induction for 19 h at 28°C. The specific enzyme activities of GluDH and FDH were 41.72 U g-1 and 109.70 U g-1 , respectively. The 200 mM D-PPT was biocatalyzed by E. coli DAAO-CAT for 4 h with space-time yield of 9.0 g·L-1 ·h-1 and conversion rate of over 99.0%. Then 220 mM PPO was converted to L-PPT by E. coli GluDH-FDH for 3 h with space-time yield of 14.5 g·L-1 ·h-1 and conversion rate of over 99.0%. To our knowledge, this is the most efficient biocatalytic reaction for L-PPT production. CONCLUSIONS AND IMPLICATIONS We found that IPTG has advantages compared with lactose in the enzyme activity and biomass of E. coli DAAO-CAT and E. coli GluDH-FDH, and IPTG is more environmentally friendly. Our data implicated that IPTG can replace lactose in terms of economic feasibility and effectiveness for scaled-up industrial fermentations.
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Affiliation(s)
- Jian-Miao Xu
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, P. R. China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Zhou-Sheng Wu
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, P. R. China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Ke-Ji Zhao
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, P. R. China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Zhi-Jie Xi
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, P. R. China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Liu-Yu Wang
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, P. R. China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Feng Cheng
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, P. R. China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Ya-Ping Xue
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, P. R. China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Yu-Guo Zheng
- Institute of Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
- Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou, P. R. China
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, P. R. China
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Medvedeva AS, Dyakova EI, Kuznetsova LS, Mironov VG, Gurkin GK, Rogova TV, Kharkova AS, Melnikov PV, Naumova AO, Butusov DN, Arlyapov VA. A Two-Mediator System Based on a Nanocomposite of Redox-Active Polymer Poly(thionine) and SWCNT as an Effective Electron Carrier for Eukaryotic Microorganisms in Biosensor Analyzers. Polymers (Basel) 2023; 15:3335. [PMID: 37631392 PMCID: PMC10459408 DOI: 10.3390/polym15163335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/03/2023] [Accepted: 08/04/2023] [Indexed: 08/27/2023] Open
Abstract
Electropolymerized thionine was used as a redox-active polymer to create a two-mediated microbial biosensor for determining biochemical oxygen demand (BOD). The electrochemical characteristics of the conducting system were studied by cyclic voltammetry and electrochemical impedance spectroscopy. It has been shown that the most promising in terms of the rate of interaction with the yeast B. adeninivorans is the system based on poly(thionine), single-walled carbon nanotubes (SWCNT), and neutral red (kint = 0.071 dm3/(g·s)). The biosensor based on this system is characterized by high sensitivity (the lower limit of determined BOD concentrations is 0.4 mgO2/dm3). Sample analysis by means of the developed analytical system showed that the results of the standard dilution method and those using the biosensor differed insignificantly. Thus, for the first time, the fundamental possibility of effectively using nanocomposite materials based on SWCNT and the redox-active polymer poly(thionine) as one of the components of two-mediator systems for electron transfer from yeast microorganisms to the electrode has been shown. It opens up prospects for creating stable and highly sensitive electrochemical systems based on eukaryotes.
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Affiliation(s)
- Anastasia S. Medvedeva
- Research Center “BioChemTech”, Tula State University, 92 Lenin Avenue, 300012 Tula, Russia
| | - Elena I. Dyakova
- Research Center “BioChemTech”, Tula State University, 92 Lenin Avenue, 300012 Tula, Russia
| | - Lyubov S. Kuznetsova
- Research Center “BioChemTech”, Tula State University, 92 Lenin Avenue, 300012 Tula, Russia
| | - Vladislav G. Mironov
- Research Center “BioChemTech”, Tula State University, 92 Lenin Avenue, 300012 Tula, Russia
| | - George K. Gurkin
- Research Center “BioChemTech”, Tula State University, 92 Lenin Avenue, 300012 Tula, Russia
| | - Tatiana V. Rogova
- Research Center “BioChemTech”, Tula State University, 92 Lenin Avenue, 300012 Tula, Russia
| | - Anna S. Kharkova
- Research Center “BioChemTech”, Tula State University, 92 Lenin Avenue, 300012 Tula, Russia
| | - Pavel V. Melnikov
- M. V. Lomonosov Institute of Fine Chemical Technologies, MIREA—Russian Technological University, 119571 Moscow, Russia
| | - Alina O. Naumova
- M. V. Lomonosov Institute of Fine Chemical Technologies, MIREA—Russian Technological University, 119571 Moscow, Russia
| | - Denis N. Butusov
- Computer-Aided Design Department, Saint Petersburg Electrotechnical University “LETI”, 197022 Saint Petersburg, Russia
| | - Vyacheslav A. Arlyapov
- Research Center “BioChemTech”, Tula State University, 92 Lenin Avenue, 300012 Tula, Russia
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Yao H, Xiao J, Tang X. Microbial Fuel Cell-Based Organic Matter Sensors: Principles, Structures and Applications. Bioengineering (Basel) 2023; 10:886. [PMID: 37627771 PMCID: PMC10451650 DOI: 10.3390/bioengineering10080886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/24/2023] [Accepted: 07/25/2023] [Indexed: 08/27/2023] Open
Abstract
Wastewater contains a significant quantity of organic matter, continuously causing environmental pollution. Timely and accurate detection of organic content in water can facilitate improved wastewater treatment and better protect the environment. Microbial fuel cells (MFCs) are increasingly recognized as valuable biological monitoring systems, due to their ability to swiftly detect organic indicators such as biological oxygen demand (BOD) and chemical oxygen demand (COD) in water quality. Different types of MFC sensors are used for BOD and COD detection, each with unique features and benefits. This review focuses on different types of MFC sensors used for BOD and COD detection, discussing their benefits and structural optimization, as well as the influencing factors of MFC-based biomonitoring systems. Additionally, the challenges and prospects associated with the development of reliable MFC sensing systems are discussed.
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Affiliation(s)
| | | | - Xinhua Tang
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430062, China
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8
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Bisi-Johnson MA, Adedeji AA, Sulaiman AA, Adefisoye MA, Okoh AI. Isolation and genotypic characterization of extended-spectrum beta-lactamase-producing Escherichia coli O157:H7 and Aeromonas hydrophila from selected freshwater sources in Southwest Nigeria. Sci Rep 2023; 13:10746. [PMID: 37400612 DOI: 10.1038/s41598-023-38014-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 06/30/2023] [Indexed: 07/05/2023] Open
Abstract
The proliferation of antibiotic-resistant bacteria and antimicrobial resistance is a pressing public health challenge because of their possible transfer to humans via contact with polluted water sources. In this study, three freshwater resources were assessed for important physicochemical characteristics as well as heterotrophic and coliform bacteria and as potential reservoirs for extended-spectrum beta-lactamase (ESBL) strains. The physicochemical characteristics ranged from 7.0 to 8.3; 25 to 30 °C, 0.4 to 93 mg/L, 0.53 to 8.80 mg/L and 53 to 240 mg/L for pH, temperature, dissolved oxygen (DO), biological oxygen demand (BOD5) and total dissolved solids, respectively. The physicochemical characteristics mostly align with guidelines except for the DO and BOD5 in some instances. Seventy-six (76) Aeromonas hydrophila and 65 Escherichia coli O157: H7 isolates were identified by preliminary biochemical analysis and PCR from the three sites. Among these, A. hydrophila displayed higher frequencies of antimicrobial resistance, with all 76 (100%) isolates completely resistant to cefuroxime and cefotaxime and with MARI ≥ 0.61. The test isolates showed more than 80% resistance against five of the ten test antimicrobials, with resistance against cefixime, a cephalosporin antibiotic being the highest at 95% (134/141). The frequency of the detection of the resistance genes in the A. hydrophila isolates generally ranged between 0% (blaSHV) and 26.3% (blaCTX-M), while the frequency of detection among the E. coli O157:H7 isolates ranged between 4.6% (blaCTX-M) and 58.4% (blaTEM). Our findings indicate that the distribution of antibiotic-resistant bacteria with diverse ESBL-producing capabilities and virulence genes in freshwater sources potentially threatens public health and the environment.
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Affiliation(s)
| | - Atilade A Adedeji
- Department of Microbiology, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Adebayo A Sulaiman
- Department of Microbiology, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Martins A Adefisoye
- Department of Microbiology, School of Science and Technology, Babcock University, Ilishan-Remo, Nigeria.
- Applied and Environmental Microbiology Research Group, Department of Biochemistry and Microbiology, University of Fort Hare, Alice, 5700, South Africa.
| | - Anthony I Okoh
- Applied and Environmental Microbiology Research Group, Department of Biochemistry and Microbiology, University of Fort Hare, Alice, 5700, South Africa
- Department of Environmental Health Sciences College of Health Sciences, University of Sharjah, Sharjah, United Arab Emirates
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9
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Fedina V, Lavrova D, Dyachkova T, Pasko A, Zvonarev A, Panfilov V, Ponamoreva O, Alferov S. Polymer-Based Conductive Nanocomposites for the Development of Bioanodes Using Membrane-Bound Enzyme Systems of Bacteria Gluconobacter oxydans in Biofuel Cells. Polymers (Basel) 2023; 15:polym15051296. [PMID: 36904536 PMCID: PMC10007125 DOI: 10.3390/polym15051296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/15/2023] [Accepted: 03/01/2023] [Indexed: 03/08/2023] Open
Abstract
The development of biofuel cells (BFCs) currently has high potential since these devices can be used as alternative energy sources. This work studies promising materials for biomaterial immobilization in bioelectrochemical devices based on a comparative analysis of the energy characteristics (generated potential, internal resistance, power) of biofuel cells. Bioanodes are formed by the immobilization of membrane-bound enzyme systems of Gluconobacter oxydans VKM V-1280 bacteria containing pyrroloquinolinquinone-dependent dehydrogenases into hydrogels of polymer-based composites with carbon nanotubes. Natural and synthetic polymers are used as matrices, and multi-walled carbon nanotubes oxidized in hydrogen peroxide vapor (MWCNTox) are used as fillers. The intensity ratio of two characteristic peaks associated with the presence of atoms C in the sp3 and sp2 hybridization for the pristine and oxidized materials is 0.933 and 0.766, respectively. This proves a reduced degree of MWCNTox defectiveness compared to the pristine nanotubes. MWCNTox in the bioanode composites significantly improve the energy characteristics of the BFCs. Chitosan hydrogel in composition with MWCNTox is the most promising material for biocatalyst immobilization for the development of bioelectrochemical systems. The maximum power density was 1.39 × 10-5 W/mm2, which is 2 times higher than the power of BFCs based on other polymer nanocomposites.
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Affiliation(s)
- Veronika Fedina
- Laboratory of Ecological and Medical Biotechnology, Tula State University, Friedrich Engels Street 157, 300012 Tula, Russia
| | - Daria Lavrova
- Laboratory of Ecological and Medical Biotechnology, Tula State University, Friedrich Engels Street 157, 300012 Tula, Russia
- Biotechnology Department, Tula State University, Pr. Lenina 92, 300012 Tula, Russia
| | - Tatyana Dyachkova
- Department of Technology and Methods of Nanoproducts Manufacturing, Tambov State Technical University, 106/5, Building 2, Sovetskaya Str., 392000 Tambov, Russia
| | - Anastasia Pasko
- Department of Technology and Methods of Nanoproducts Manufacturing, Tambov State Technical University, 106/5, Building 2, Sovetskaya Str., 392000 Tambov, Russia
| | - Anton Zvonarev
- G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, Federal Research Center “Pushchino Scientific Centre of Biological Research”, Russian Academy of Sciences, 142290 Pushchino, Russia
| | - Victor Panfilov
- Department of Biotechnology, Mendeleev University of Chemical Technology of Russia, Miusskaya Square 9, Moscow 125047, Russia
| | - Olga Ponamoreva
- Biotechnology Department, Tula State University, Pr. Lenina 92, 300012 Tula, Russia
| | - Sergey Alferov
- Laboratory of Ecological and Medical Biotechnology, Tula State University, Friedrich Engels Street 157, 300012 Tula, Russia
- Biotechnology Department, Tula State University, Pr. Lenina 92, 300012 Tula, Russia
- Correspondence:
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