1
|
Soranzo T, Ben Tahar A, Chmayssem A, Zelsmann M, Vadgama P, Lenormand JL, Cinquin P, K. Martin D, Zebda A. Electrochemical Biosensing of Glucose Based on the Enzymatic Reduction of Glucose. SENSORS (BASEL, SWITZERLAND) 2022; 22:s22197105. [PMID: 36236202 PMCID: PMC9572614 DOI: 10.3390/s22197105] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/10/2022] [Accepted: 09/14/2022] [Indexed: 06/12/2023]
Abstract
In this work, the enzyme aldehyde reductase, also known as aldose reductase, was synthesized and cloned from a human gene. Spectrophotometric measurements show that in presence of the nicotinamide adenine dinucleotide phosphate cofactor (NADPH), the aldehyde reductase catalyzed the reduction of glucose to sorbitol. Electrochemical measurements performed on an electrodeposited poly(methylene green)-modified gold electrode showed that in the presence of the enzyme aldehyde reductase, the electrocatalytic oxidation current of NADPH decreased drastically after the addition of glucose. These results demonstrate that aldehyde reductase is an enzyme that allows the construction of an efficient electrochemical glucose biosensor based on glucose reduction.
Collapse
Affiliation(s)
- Thomas Soranzo
- Univ. Grenoble Alpes, TIMC-IMAG/CNRS/INSERM, UMR 5525, F-38000 Grenoble, France
| | - Awatef Ben Tahar
- Univ. Grenoble Alpes, TIMC-IMAG/CNRS/INSERM, UMR 5525, F-38000 Grenoble, France
| | - Ayman Chmayssem
- Univ. Grenoble Alpes, TIMC-IMAG/CNRS/INSERM, UMR 5525, F-38000 Grenoble, France
| | - Marc Zelsmann
- Univ. Grenoble Alpes, CNRS, CEA-LETI, Grenoble INP, LTM, F-38054 Grenoble, France
| | - Pankaj Vadgama
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Jean-Luc Lenormand
- Univ. Grenoble Alpes, TIMC-IMAG/CNRS/INSERM, UMR 5525, F-38000 Grenoble, France
| | - Phillipe Cinquin
- Univ. Grenoble Alpes, TIMC-IMAG/CNRS/INSERM, UMR 5525, F-38000 Grenoble, France
| | - Donald K. Martin
- Univ. Grenoble Alpes, TIMC-IMAG/CNRS/INSERM, UMR 5525, F-38000 Grenoble, France
| | - Abdelkader Zebda
- Univ. Grenoble Alpes, TIMC-IMAG/CNRS/INSERM, UMR 5525, F-38000 Grenoble, France
| |
Collapse
|
2
|
Shi Y, Li L, Zhang L. Enhanced Power Density of Alcohol Biofuel Cell by Polymer‐assisted Crosslinks of 3D Graphene on Carbon Paper as the Bioanode. ELECTROANAL 2022. [DOI: 10.1002/elan.202100369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yuhe Shi
- School of Science Harbin Institute of Technology Shenzhen 518055 China
| | - Lin Li
- School of Science Harbin Institute of Technology Shenzhen 518055 China
| | - Ling Zhang
- School of Science Harbin Institute of Technology Shenzhen 518055 China
| |
Collapse
|
3
|
Sun X, Zhang H, Hao S, Zhai J, Dong S. A Self-Powered Biosensor with a Flake Electrochromic Display for Electrochemical and Colorimetric Formaldehyde Detection. ACS Sens 2019; 4:2631-2637. [PMID: 31441298 DOI: 10.1021/acssensors.9b00917] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The formaldehyde biosensors with the features of cost effectiveness, high specificity, easy operation, and simplicity are urgently desired in routing and field detection of formaldehyde. Here, we report a new design of an enzymatic self-powered biosensor (ESPB) toward formaldehyde detection. The ESPB involves a formaldehyde dehydrogenase/poly-methylene green/buckypaper bioanode as the sensing electrode and a Prussian blue/Au nanoparticles/carbon fiber paper cathode as the electrochromic display. Formaldehyde acts as the fuel to drive the ESPB, relying on that the concentration of formaldehyde can be determined with the ESPB by both directly measuring the variance in short circuit current and observing the color change of the cathode. By measuring the variance in short circuit current, a linear detection range from 0.01 to 0.35 mM and a calculated detection limit of 0.006 mM are obtained, comparable to or better than those reported before. The color change of the cathode can be distinguished easily and exactly via the naked eye after immersing the ESPB in formaldehyde solution for 90 s with the concentration up to 0.35 mM, covering the permissive level of formaldehyde in some standards associated with environmental quality control. Specially, the formaldehyde concentration can be precisely quantified by analyzing the color change of the cathode digitally using the equation of B/(R + G + B). In the following test of real spiked samples of tap water and lake water, the recovery ratios of formaldehyde with the concentrations from 0.010 to 0.045 mM are tested to be between 95 and 100% by both measuring the variance in short circuit current and analyzing the color change of the cathode digitally. In addition, the ESPB exhibits negligible interference from acetaldehyde and ethanol and can be stored at 4 °C for 21 days with a loss of less than 8% in its initial value of short circuit current. Therefore, the ESPB with the capability of working like disposable test paper can be expected as a sensitive, simple, rapid, cost-effective colorimetric method with high selectivity in routing and field formaldehyde detection.
Collapse
Affiliation(s)
- Xiaoxuan Sun
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - He Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Shuai Hao
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Junfeng Zhai
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Shaojun Dong
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| |
Collapse
|
4
|
John CW, Proshlyakov DA. Fourier Transform Infrared Spectrovoltammetry and Quantitative Modeling of Analytes in Kinetically Constrained Redox Mixtures. Anal Chem 2019; 91:9563-9570. [PMID: 31257856 DOI: 10.1021/acs.analchem.9b00859] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Redox-active analytes that do not support direct electron transfer on the electrode, such as proteins with buried redox centers, pose challenges to characterization of their structural and thermodynamic properties. Investigations of indirect transitions in analytes supported by complex redox mixtures require a careful balance between kinetic limitations and spectral interference from the mediators. Using methylene green and thionine acetate as redox mediators and myoglobin as the analyte, we demonstrate that normal pulse spectrovoltammetry (NPSV) with Fourier transform infrared (FT-IR) detection and subsequent global spectral regression analysis can resolve structural and thermodynamic properties simultaneously with little a priori information. Both the E1/2 and unbiased redox difference FT-IR spectra of the Fe(II)/Fe(III) redox couple of myoglobin in reduction and oxidation NPSV modes were in good agreement with those reported earlier by independent techniques. The thermodynamic and kinetic limitations of mediators/analyte interactions were investigated using comprehensive semiempirical kinetic simulation models. This modeling effort yielded a flexible computational tool capable of quantitatively predicting the redox response in mediated electrochemical studies and defining its limitations, thus greatly expanding the range and precision of the formal mediator/analyte concentration ratio rule.
Collapse
Affiliation(s)
- Christopher W John
- Department of Chemistry , Michigan State University , East Lansing , Michigan 48824 , United States
| | - Denis A Proshlyakov
- Department of Chemistry , Michigan State University , East Lansing , Michigan 48824 , United States
| |
Collapse
|
5
|
Ethanol bioelectrooxidation in a robust poly(methylene green-pyrrole)- mediated enzymatic biofuel cell. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.04.075] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
6
|
Lee D, Lee S, Rho J, Jang W, Han SH, Chung TD. 3D interdigitated electrode array in the microchannel free of reference and counter electrodes. Biosens Bioelectron 2018; 101:317-321. [DOI: 10.1016/j.bios.2017.09.050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 09/22/2017] [Accepted: 09/27/2017] [Indexed: 01/05/2023]
|
7
|
Aquino Neto S, Minteer SD, de Andrade AR. Developing ethanol bioanodes using a hydrophobically modified linear polyethylenimine hydrogel for immobilizing an enzyme cascade. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2017.09.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
8
|
Sakuta R, Takeda K, Igarashi K, Ohno H, Nakamura N. Pyrroloquinoline quinone-dependent glucose dehydrogenase anode: d-Galacturonic acid oxidation and galactaric acid production. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2016.11.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
9
|
Ju HX, Zhuang QK, Long YT. The Preface. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.11.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
10
|
Coupling of an enzymatic biofuel cell to an electrochemical cell for self-powered glucose sensing with optical readout. Bioelectrochemistry 2015; 106:22-7. [DOI: 10.1016/j.bioelechem.2015.04.003] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Revised: 03/23/2015] [Accepted: 04/05/2015] [Indexed: 11/18/2022]
|
11
|
Li H, Li R, Worden RM, Barton SC. Facilitation of high-rate NADH electrocatalysis using electrochemically activated carbon materials. ACS APPLIED MATERIALS & INTERFACES 2014; 6:6687-6696. [PMID: 24780505 DOI: 10.1021/am500087a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Electrochemical activation of glassy carbon, carbon paper and functionalized carbon nanotubes via high-applied-potential cyclic voltammetry leads to the formation of adsorbed, redox active functional groups and increased active surface area. Electrochemically activated carbon electrodes display enhanced activity toward nicotinamide adenine dinucleotide (NADH) oxidation, and more importantly, dramatically improved adsorption of bioelectrochemically active azine dyes. Adsorption of methylene green on an electroactivated carbon electrode yields a catalyst layer that is 1.8-fold more active toward NADH oxidation than an electrode prepared using electropolymerized methylene green. Stability studies using cyclic voltammetry indicate 70% activity retention after 4000 cycles. This work further facilitates the electrocatalysis of NADH oxidation for bioconversion, biosensor and bioenergy processes.
Collapse
Affiliation(s)
- Hanzi Li
- Department of Chemical Engineering and Materials Science, Michigan State University , East Lansing, Michigan 48824, United States
| | | | | | | |
Collapse
|
12
|
Fenga P, Cardoso F, Aquino Neto S, De Andrade A. Multiwalled carbon nanotubes to improve ethanol/air biofuel cells. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.05.046] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
13
|
Conductive Polymer-Based Materials for Medical Electroanalytic Applications. MODERN ASPECTS OF ELECTROCHEMISTRY 2013. [DOI: 10.1007/978-1-4614-6148-7_8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
14
|
Li H, Worley KE, Calabrese Barton S. Quantitative Analysis of Bioactive NAD+ Regenerated by NADH Electro-oxidation. ACS Catal 2012. [DOI: 10.1021/cs3004598] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hanzi Li
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824,
United States
| | - Kathryn E Worley
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824,
United States
| | - Scott Calabrese Barton
- Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824,
United States
| |
Collapse
|
15
|
Is the poly (methylene blue)-modified glassy carbon electrode an adequate electrode for the simple detection of thiols and amino acid-based molecules? J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2012.08.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
16
|
Kochius S, Magnusson AO, Hollmann F, Schrader J, Holtmann D. Immobilized redox mediators for electrochemical NAD(P)+ regeneration. Appl Microbiol Biotechnol 2012; 93:2251-64. [PMID: 22327354 DOI: 10.1007/s00253-012-3900-z] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Revised: 01/09/2012] [Accepted: 01/10/2012] [Indexed: 11/26/2022]
Abstract
The applicability of dissolved redox mediators for NAD(P)(+) regeneration has been demonstrated several times. Nevertheless, the use of mediators in solutions for sensor applications is not a very convenient strategy since the analysis is not reagentless and long stabilization times occur. The most important drawbacks of dissolved mediators in biocatalytic applications are interferences during product purification, limited reusability of the mediators, and their cost-intensive elimination from wastewater. Therefore, the use of immobilized mediators has both economic and ecological advantages. This work critically reviews the current state-of-art of immobilized redox mediators for electrochemical NAD(P)(+) regeneration. Various surface modification techniques, such as adsorption polymerization and covalent linkage, as well as the corresponding NAD(P)(+) regeneration rates and the operational stability of the immobilized mediator films, will be discussed. By comparison with other existing regeneration systems, the technical potential and future perspectives of biocatalytic redox reactions based on electrochemically fed immobilized mediators will be assessed.
Collapse
|
17
|
Campbell E, Meredith M, Minteer SD, Banta S. Enzymatic biofuel cells utilizing a biomimetic cofactor. Chem Commun (Camb) 2012; 48:1898-900. [PMID: 22227738 DOI: 10.1039/c2cc16156g] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The performance of immobilized enzyme systems is often limited by cofactor diffusion and regeneration. Here, we demonstrate an engineered enzyme capable of utilizing the minimal cofactor nicotinamide mononucleotide (NMN(+)) to address these limitations. Significant gains in performance are observed with NMN(+) in immobilized systems, despite a decreased turnover rate with the minimal cofactor.
Collapse
Affiliation(s)
- Elliot Campbell
- Department of Chemical Engineering, Columbia University in the City of New York, New York, NY 10027, USA
| | | | | | | |
Collapse
|
18
|
Aquino Neto S, Forti JC, Zucolotto V, Ciancaglini P, De Andrade AR. The kinetic behavior of dehydrogenase enzymes in solution and immobilized onto nanostructured carbon platforms. Process Biochem 2011. [DOI: 10.1016/j.procbio.2011.09.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
19
|
Dilgin DG, Gligor D, Gökçel Hİ, Dursun Z, Dilgin Y. Glassy carbon electrode modified with poly-Neutral Red for photoelectrocatalytic oxidation of NADH. Mikrochim Acta 2011. [DOI: 10.1007/s00604-011-0582-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
20
|
Pijanowska DG, Kossakowska A, Torbicz W. Electroconductive Polymers in (Bio)chemical Sensors. Biocybern Biomed Eng 2011. [DOI: 10.1016/s0208-5216(11)70025-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
21
|
Electrocatalytic detection of NADH and ethanol at glassy carbon electrode modified with electropolymerized films from methylene green. J Solid State Electrochem 2007. [DOI: 10.1007/s10008-007-0378-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
22
|
|
23
|
Electrochemical behavior of carbon paste electrodes modified with methylene green immobilized on two different X type zeolites. J APPL ELECTROCHEM 2006. [DOI: 10.1007/s10800-006-9251-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
24
|
Hung Tzang C, Yuan R, Yang M. Voltammetric biosensors for the determination of formate and glucose-6-phosphate based on the measurement of dehydrogenase-generated NADH and NADPH. Biosens Bioelectron 2001; 16:211-9. [PMID: 11340000 DOI: 10.1016/s0956-5663(00)00143-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This paper describes the development of a modified electrode for the electrocatalytic oxidation of beta-nicotinamide adenine dinucleotide (beta-NADH) and beta-nicotinamide adenine dinucleotide phosphate (beta-NADPH) using electropolymerised 3,4-dihydroxybenzaldehyde (3,4-DHB). Two voltammetric biosensors using enzyme-immobilised membranes were constructed for the determination of formic acid and glucose-6-phosphate (G6P), respectively. The formic acid biosensor based on the combination of formate dehydrogenase (FDH)-modified membrane with 3,4-DHB-coated glassy carbon electrode is one to two orders more sensitive (LOD, 5.0x10(-5) M) than previously reported electrochemical biosensors. Similarly, lower detection limit (4.0x10(-5) M) for the measurement of G6P was achieved using glucose-6-phosphate dehydrogenase (G6PDH) in the presence of beta-NADP(+). The interference of uric acid and ascorbate was minimised by incorporating an additional membrane modified with uricase and ascorbate oxidase, respectively. The biosensing scheme developed in this study can be adopted universally with a number of dehydrogenases for the detection of different substrates.
Collapse
Affiliation(s)
- C Hung Tzang
- Department of Biology and Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, People's Republic of China
| | | | | |
Collapse
|
25
|
Ciszewski A, Milczarek G. Electrocatalysis of NADH oxidation with an electropolymerized film of 1,4-bis(3,4-dihydroxyphenyl)-2,3-dimethylbutane. Anal Chem 2000; 72:3203-9. [PMID: 10939388 DOI: 10.1021/ac991182m] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The oxidation of 1,4-bis(3,4-dihydroxyphenyl)-2,3-dimethylbutane, known also as nordihydroguaiaretic acid, on a glassy carbon electrode anodically pretreated in KCl solution gives rise to a stabile redox-active polymer containing the o-quinone moiety. The redox response of the modified electrode is typical for a surface-immobilized species. The modifier thickness can be easy controlled by a number of potential cycles applied during electropolymerization, and a surface coverage up to 1.1 x 10(-9) mol cm(-2) can be achieved. The film exhibits catalytic activity toward NADH oxidation. Characteristic kinetic constants for the mediated oxidation of NADH were derived from rotating disk experiments performed in phosphate or Tris/acetate buffers. The effects of film thickness, solution pH, and the presence of Mg2+ cation on the catalytic efficiency of the modified electrode were discussed and compared with literature data concerning related systems.
Collapse
Affiliation(s)
- A Ciszewski
- Institute of Chemistry and Applied Electrochemistry, Poznan University of Technology, Poland.
| | | |
Collapse
|
26
|
Alvarez-González MI, Saidman SB, Lobo-Castañón MJ, Miranda-Ordieres AJ, Tuñón-Blanco P. Electrocatalytic detection of NADH and glycerol by NAD(+)-modified carbon electrodes. Anal Chem 2000; 72:520-7. [PMID: 10695137 DOI: 10.1021/ac9908344] [Citation(s) in RCA: 87] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The electrochemical oxidation of the adenine moiety in NAD+ and other adenine nucleotides at carbon paste electrodes gives rise to redox-active products which strongly adsorb on the electrode surface. Carbon paste electrodes modified with the oxidation products of NAD+ show excellent electrocatalytic activity toward NADH oxidation, reducing its overpotential by about 400 mV. The rate constant for the catalytic oxidation of NADH, determined by rotating disk electrode measurements and extrapolation to zero concentration of NADH, was found to be 2.5 x 10(5) M-1 s-1. The catalytic oxidation current allows the amperometric detection of NADH at an applied potential of +50 mV (Ag/AgCl) with a detection limit of 4.0 x 10(-7) M and linear response up to 1.0 x 10(-5) M NADH. These modified electrodes can be used as amperometric transducers in the design of biosensors based on coupled dehydrogenase enzymes and, in fact, we have designed an amperometric biosensor for glycerol based on the glycerol dehydrogenase (GlDH) system. The enzyme GlDH and its cofactor NAD+ were co-immobilized in a carbon paste electrode using an electropolymerized layer of nonconducting poly(o-phenylenediamine) (PPD). After partial oxidation of the immobilized NAD+, the modified electrode allows the amperometric detection of the NADH enzymatically obtained at applied potential above 0 V (Ag/AgCl). The resulting biosensor shows a fast and linear response to glycerol within the concentration range of 1.0 x 10(-6)-1.0 x 10(-4) M with a detection limit of 4.3 x 10(-7) M. The amperometric response remains stable for at least 3 days. The biosensor was applied to the determination of glycerol in a plant-extract syrup, with results in good agreement with those for the standard spectrophotometric method.
Collapse
Affiliation(s)
- M I Alvarez-González
- Departamento de Química Física y Analítica, Universidad de Oviedo, Asturias, Spain
| | | | | | | | | |
Collapse
|
27
|
Akkermans RP, Roberts SL, Marken F, Coles BA, Wilkins SJ, Cooper JA, Woodhouse KE, Compton RG. Methylene Green Voltammetry in Aqueous Solution: Studies Using Thermal, Microwave, Laser, or Ultrasonic Activation at Platinum Electrodes. J Phys Chem B 1999. [DOI: 10.1021/jp992164b] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Richard P. Akkermans
- Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
| | - Sarah L. Roberts
- Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
| | - Frank Marken
- Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
| | - Barry A. Coles
- Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
| | - Shelley J. Wilkins
- Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
| | - Jonathan A. Cooper
- Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
| | - Katy E. Woodhouse
- Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
| | - Richard G. Compton
- Physical and Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, United Kingdom
| |
Collapse
|
28
|
Electrocatalytical oxidation of NADH with dopamine covalently bound to self-assembled cysteamine monolayers on a gold electrode. ACTA ACUST UNITED AC 1997. [DOI: 10.1016/s0302-4598(97)00042-1] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|