1
|
Sundaresan P, Lee CH, Fu CC, Liu SH, Juang RS. Ultrasound-assisted synthesis of barium tungstate encapsulated carbon nanofiber composite for real-time sensing of p-cresol in human urine samples. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106239] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
2
|
Kostjukova LO, Leontieva SV, Kostjukov VV. The vibronic absorption spectrum and electronic properties of Azure B in aqueous solution: TD-DFT/DFT study. J Mol Graph Model 2021; 107:107964. [PMID: 34147837 DOI: 10.1016/j.jmgm.2021.107964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 11/26/2022]
Abstract
The vibronic absorption spectrum of Azure B (AB) in an aqueous solution is calculated using the time-dependent density functional theory (TD-DFT). The results of calculations are analyzed using all hybrid functionals supported by Gaussian16, the 6-31++G(d,p) basis set, and the IEFPCM and SMD solvent models. The solvent model IEFPCM gave significantly underestimated values of λmax in comparison with the experiment. This is a manifestation of the TD-DFT "cyanine failure". However, the SMD model made it possible to obtain good agreement between the calculation results and experimental data. The best fit was achieved using the X3LYP functional. According to our calculations, the shoulder in the visible absorption spectrum of AB has a vibronic origin. However, the calculated shoulder is weaker than the experimental one. Explicit assignment of two water molecules, which form strong hydrogen bonds with a dye molecule, leads to a shift of the calculated absorption spectrum to longer wavelengths by approximately 17 nm but does not lead to an improvement in its shape. Comparative analysis of the calculated vibronic absorption spectra of Azure B with those obtained earlier for Azure A and methylene blue showed that the presence and intensity of the short-wavelength shoulder are determined by the location of the bands of higher vibronic transitions relative to the band of the 00 → 00 main transitions. Photoexcitation leads to an increase in the dipole moment of the dye molecule. An insignificant photoinduced electron transfer was found in the central ring of the chromophore of the dye molecule.
Collapse
Affiliation(s)
- Lyudmila O Kostjukova
- Physics Department, Nakhimov Black Sea Higher Naval School, Dybenko st.,1a, Sevastopol, Crimea, 299028, Ukraine
| | - Svetlana V Leontieva
- Physics Department, Nakhimov Black Sea Higher Naval School, Dybenko st.,1a, Sevastopol, Crimea, 299028, Ukraine
| | - Victor V Kostjukov
- Physics Department, Sevastopol State University, Universitetskaya st., 33, Sevastopol, Crimea, 299053, Ukraine.
| |
Collapse
|
3
|
Montmorillonite clay-modified disposable ink-jet-printed graphene electrode as a sensitive voltammetric sensor for the determination of cadmium(II) and lead(II). SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2283-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
|
4
|
Porfireva A, Vorobev V, Babkina S, Evtugyn G. Electrochemical Sensor Based on Poly(Azure B)-DNA Composite for Doxorubicin Determination. SENSORS (BASEL, SWITZERLAND) 2019; 19:E2085. [PMID: 31060322 PMCID: PMC6539792 DOI: 10.3390/s19092085] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 05/02/2019] [Accepted: 05/03/2019] [Indexed: 01/23/2023]
Abstract
A new voltammetric DNA sensor has been developed for doxorubicin determination on the platform of a glassy carbon electrode (GCE) covered with electropolymerized Azure B film and physically adsorbed native DNA. The redox properties of polymeric Azure B were monitored at various pH and scan rates. DNA application decreased the peak currents related to polymeric and monomeric forms of the dye, whereas incubation in doxorubicin solution partially restored the peaks in accordance with the drug and DNA concentration. The relative shift of the cathodic peak current caused by doxorubicin depended on the nominal DNA concentration and its application mode. In optimal conditions, the DNA sensor makes it possible to determine between 0.1 μM to 0.1 nM doxorubicin (limit of detection 7×10-11 M). The DNA sensor was tested on commercial doxorubicin formulations and on artificial samples the mimicked electrolyte content of human serum.
Collapse
Affiliation(s)
- Anna Porfireva
- A.M. Butlerov' Chemistry Institute of Kazan Federal University, 18 Kremlevskaya Street, Kazan 420008, Russia.
| | - Vyatseslav Vorobev
- Interdisciplinary Center of Analytical Microscopy of Kazan Federal University, 18 Kremlevskaya Street, Kazan 420008, Russia.
| | - Sofya Babkina
- Analytical Chemistry Department of the Lomonosov' Institute of Fine Chemical Technologies, MIREA - Russian Technological University, 86 Vernadsky Prospect, Moscow 119571, Russia.
| | - Gennady Evtugyn
- A.M. Butlerov' Chemistry Institute of Kazan Federal University, 18 Kremlevskaya Street, Kazan 420008, Russia.
| |
Collapse
|
5
|
Electrochemical detection of estrus specific phenolic compound p- cresol to assess the reproductive phase of certain farm animals. Biochem Eng J 2017. [DOI: 10.1016/j.bej.2017.06.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
6
|
Joshi N, Rawat K, Solanki PR, Bohidar H. Biocompatible laponite ionogels based non-enzymatic oxalic acid sensor. SENSING AND BIO-SENSING RESEARCH 2015. [DOI: 10.1016/j.sbsr.2015.08.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
|
7
|
Electrocatalytic oxidation of salicylic acid by a cobalt hydrotalcite-like compound modified Pt electrode. Biosens Bioelectron 2011; 26:3200-6. [DOI: 10.1016/j.bios.2010.12.026] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2010] [Revised: 12/13/2010] [Accepted: 12/16/2010] [Indexed: 11/19/2022]
|
8
|
Ordered mesoporous carbon functionalized with poly-azure B for electrocatalytic application. J Electroanal Chem (Lausanne) 2010. [DOI: 10.1016/j.jelechem.2010.03.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
9
|
Electrochemistry and electrochemiluminescence for the host–guest system laponite–tris(2,2′-bipyridyl)ruthenium(II). Electrochem commun 2010. [DOI: 10.1016/j.elecom.2009.11.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
10
|
Shan D, Zhang J, Xue HG, Ding SN, Cosnier S. Colloidal laponite nanoparticles: Extended application in direct electrochemistry of glucose oxidase and reagentless glucose biosensing. Biosens Bioelectron 2010; 25:1427-33. [DOI: 10.1016/j.bios.2009.10.046] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2009] [Revised: 10/23/2009] [Accepted: 10/28/2009] [Indexed: 10/20/2022]
|
11
|
Mousty C. Biosensing applications of clay-modified electrodes: a review. Anal Bioanal Chem 2009; 396:315-25. [PMID: 19936720 DOI: 10.1007/s00216-009-3274-y] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2009] [Revised: 10/29/2009] [Accepted: 10/29/2009] [Indexed: 11/27/2022]
Abstract
Two-dimensional layered inorganic solids, such as cationic clays and layered double hydroxides (LDHs), also defined as anionic clays, have open structures which are favourable for interactions with enzymes and which intercalate redox mediators. This review aims to show the interest in clays and LDHs as suitable host matrices likely to immobilize enzymes onto electrode surfaces for biosensing applications. It is meant to provide an overview of the various types of electrochemical biosensors that have been developed with these 2D layered materials, along with significant advances over the last several years. The different biosensor configurations and their specific transduction procedures are discussed.
Collapse
Affiliation(s)
- Christine Mousty
- Laboratoire des Matériaux Inorganiques (LMI, UMR UBP-CNRS 6002), Université Blaise Pascal (Clermont-Ferrand), 24, Avenue des Landais, 63177, Aubière cedex, France.
| |
Collapse
|
12
|
Shan D, Wang YN, Xue HG, Cosnier S, Ding SN. Xanthine oxidase/laponite nanoparticles immobilized on glassy carbon electrode: direct electron transfer and multielectrocatalysis. Biosens Bioelectron 2009; 24:3556-61. [PMID: 19500969 DOI: 10.1016/j.bios.2009.05.009] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2009] [Revised: 04/17/2009] [Accepted: 05/11/2009] [Indexed: 10/20/2022]
Abstract
In this work, colloidal laponite nanoparticles were further expanded into the design of the third-generation biosensor. Direct electrochemistry of the complex molybdoenzyme xanthine oxidase (XnOx) immobilized on glassy carbon electrode (GCE) by laponite nanoparticles was investigated for the first time. XnOx/laponite thin film modified electrode showed only one pair of well defined and reversible cyclic voltammetric peaks attributed to XnOx-FAD cofactor at about -0.370 V vs. SCE (pH 5). The formal potential of XnOx-FAD/FADH(2) couple varied linearly with the increase of pH in the range of 4.0-8.0 with a slope of -54.3 mV pH(-1), which indicated that two-proton transfer was accompanied with two-electron transfer in the electrochemical reaction. More interestingly, the immobilized XnOx retained its biological activity well and displayed an excellent electrocatalytic performance to both the oxidation of xanthine and the reduction of nitrate. The electrocatalytic response showed a linear dependence on the xanthine concentration ranging from 3.9 x 10(-8) to 2.1 x 10(-5)M with a detection limit of 1.0 x 10(-8)M based on S/N=3.
Collapse
Affiliation(s)
- Dan Shan
- College of Chemistry & Chemical Engineering, Yangzhou University, Jiangsu 225002, China.
| | | | | | | | | |
Collapse
|
13
|
Biopolymer-clay nanoparticles composite system (Chitosan-laponite) for electrochemical sensing based on glucose oxidase. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2008. [DOI: 10.1016/j.msec.2008.03.001] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
14
|
Shan D, Yao W, Xue H. Electrochemical study of ferrocenemethanol-modified layered double hydroxides composite matrix: Application to glucose amperometric biosensor. Biosens Bioelectron 2007; 23:432-7. [PMID: 17720475 DOI: 10.1016/j.bios.2007.06.007] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2007] [Revised: 05/31/2007] [Accepted: 06/27/2007] [Indexed: 11/17/2022]
Abstract
A novel amperometric glucose sensor based on co-immobilization of ferrocenemethanol (MeOHFc) and glucose oxidase (GOD) in the layered double hydroxides (LDHs) was described. MeOHFc immobilized in LDHs played effectively the role of an electron shuttle and allowed the detection of glucose at 0.25 V (versus SCE), with dramatically reduced interference from easily oxidizable constituents. The sensor (LDHs/MeOHFc/GOD) exhibited a relatively fast response (response time was about 5s), low detection limit (3 microM), and high sensitivity (ca. 60 mA M(-1)cm(-2)) with a linear range of 6.7 x 10(-6) to 3.86 x 10(-4)M of glucose. Apparent Michaelis-Menten constant was calculated to be 2.25 mM.
Collapse
Affiliation(s)
- Dan Shan
- College of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | | | | |
Collapse
|
15
|
Shan D, Han E, Xue H, Cosnier S. Self-Assembled Films of Hemoglobin/Laponite/Chitosan: Application for the Direct Electrochemistry and Catalysis to Hydrogen Peroxide. Biomacromolecules 2007; 8:3041-6. [PMID: 17824641 DOI: 10.1021/bm070329d] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A highly stable biological film was formed on the functional glassy carbon electrode (GCE) via step-by-step self-assembly of chitosan (CHT), laponite, and hemoglobin (Hb). Cyclic voltammetry (CV) of the Hb/laponite/CHT/GCE showed a pair of stable and quasi-reversible peaks for the Hb-Fe(III)/Fe(II) redox couple at about -0.035 V versus a saturated calomel electrode in pH 6.0 phosphate buffer at a scan rate of 0.1 V s(-1). The electrochemical reaction of Hb entrapped on the laponite/CHT self-assembled film exhibited a surface-controlled electrode process. The formal potential of the Hb-heme-Fe(III)/Fe(II) couple varied linearly with the increase of pH over the range of 3.0-8.0 with a slope of -63 mV pH(-1), which implied that an electron transfer was accompanied by single-proton transfer in the electrochemical reaction. The position of the Soret absorption band of this self-assembled Hb/laponite/CHT film suggested that the entrapped Hb kept its secondary structure similar to its native state. The self-assembled film showed excellent long-term stability, the CV peak potentials kept in the same positions, and the cathodic peak currents retained 90% of their values after 60 days. The film was used as a biological catalyst to catalyze the reduction of hydrogen peroxide. The electrocatalytic response showed a linear dependence on the H2O2 concentration ranging widely from 6.2 x 10(-6) to 2.55 x 10(-3) M with a detection limit of 6.2 x 10(-6) M at 3 sigma.
Collapse
Affiliation(s)
- Dan Shan
- Key Laboratory of Environmental Materials and Environmental Engineering of Jiangsu Province, Yangzhou, China.
| | | | | | | |
Collapse
|
16
|
Mbouguen JK, Ngameni E, Walcarius A. Quaternary ammonium functionalized clay film electrodes modified with polyphenol oxidase for the sensitive detection of catechol. Biosens Bioelectron 2007; 23:269-75. [PMID: 17537626 DOI: 10.1016/j.bios.2007.04.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2007] [Revised: 03/31/2007] [Accepted: 04/17/2007] [Indexed: 11/16/2022]
Abstract
Naturally occurring Cameroonian smectite clay has been grafted with trimethylpropylammonium (TMPA) groups and the resulting organoclay has been deposited onto a glassy carbon electrode surface as a suitable immobilization matrix for polyphenol oxidase (PPO). High sensitivity of the electrochemical device to catechol biosensing can be achieved when the enzyme was impregnated within the organoclay film subsequent to its deposition due to favorable electrostatic interaction between PPO and the TMPA-clay layer. The bioelectrode preparation method was also compatible with the use of a mediator (i.e., ferrocene) and the best performance was obtained with a three-layer configuration made of glassy carbon coated with a first layer of ferrocene (Fc), which was then covered with the PPO-impregnated TMPA-clay layer, and finally overcoated with an enzyme-free TMPA-clay film acting as a protecting overlayer to avoid leaching of the biomolecule in solution. The electrochemical behavior of the modified film electrodes was first characterized by cyclic voltammetry and, then, they were evaluated for the amperometric biosensing of the model analyte catechol in batch conditions and in flow injection analysis. Various experimental parameters likely to influence the biosensor response have been investigated, including the electrode preparation mode (composition configuration, thickness), the usefulness of a mediator, the operating potential and pH of the medium, as well as the advantageous features of the TMPA-clay in comparison to related film electrodes based on non-functionalized clays. The organoclay was found to provide a favorable environment to enzyme activity and the multilayer configuration of the film electrode to provide a biosensor with good characteristics, such as an extended linear range for catechol detection (2 x 10(-8) to 1.2 x 10(-5)M) and a detection limit in the nanomolar range (9 x 10(-9)M).
Collapse
Affiliation(s)
- Justin Kemmegne Mbouguen
- Laboratoire de Chimie Physique et Microbiologie pour l'Environnement, Unité Mixte de Recherche UMR 7564, CNRS, Nancy-Université, 405, rue de Vandoeuvre, F-54600 Villers-les-Nancy, France
| | | | | |
Collapse
|
17
|
Chen C, Gao Y. Electrosynthesis of Poly(azure B) from Sulfuric Acid Solution. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2007. [DOI: 10.1080/10601320701521589] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
18
|
Development and prevalidation of a method for phenol determination by solid-phase spectrophotometry. Mikrochim Acta 2007. [DOI: 10.1007/s00604-007-0748-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
19
|
Fan Q, Shan D, Xue H, He Y, Cosnier S. Amperometric phenol biosensor based on laponite clay–chitosan nanocomposite matrix. Biosens Bioelectron 2007; 22:816-21. [PMID: 16624546 DOI: 10.1016/j.bios.2006.03.002] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2005] [Revised: 02/21/2006] [Accepted: 03/01/2006] [Indexed: 11/24/2022]
Abstract
A novel strategy to fabricate an amperometric biosensor for phenol determination based on chitosan/laponite nanocomposite matrix was described. The composite film was used to immobilize PPO on the surface of a glassy carbon electrode. Chitosan was utilized to improve the analytical performance of the pure clay-modified bioelectrode. The biosensor exhibited a series of properties: good affinity to its substrate (the apparent Michaelis-Menten constant for the sensor was found to be 0.16 mM), high sensitivity (674 mA M(-1)cm(-2) for catechol) and remarkable long-term stability in storage (it retains 88% of the original activity after 60 days). In addition, optimization of the biosensor construction as well as effects of experimental variables such as pH, operating potential and temperature on the amperometric response of the sensor were discussed.
Collapse
Affiliation(s)
- Quan Fan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | | | | | | | | |
Collapse
|
20
|
Tembe S, Inamdar S, Haram S, Karve M, D'Souza SF. Electrochemical biosensor for catechol using agarose-guar gum entrapped tyrosinase. J Biotechnol 2006; 128:80-5. [PMID: 17113674 DOI: 10.1016/j.jbiotec.2006.09.020] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2006] [Revised: 09/13/2006] [Accepted: 09/15/2006] [Indexed: 10/23/2022]
Abstract
An electrochemical biosensor using tyrosinase was constructed for the determination of catechol. The enzyme was extracted from a plant source Amorphophallus companulatus and entrapped in agarose-guar gum composite biopolymer matrix. Catechol was determined by direct reduction of biocatalytically liberated quinone species at -0.1 V versus Ag/AgCl (3M KCl). The response was found to be linear and concentration dependent in the range of 6 x 10(-5) to 8 x 10(-4)M with a lower detection limit of 6 microM. It has reusability up to 20 cycles and a shelf life of more than 2 months when stored at 4 degrees C.
Collapse
Affiliation(s)
- Sanket Tembe
- Department of Chemistry, University of Pune, Ganeshkhind, Pune 411 007, India
| | | | | | | | | |
Collapse
|
21
|
Mbouguen JK, Ngameni E, Walcarius A. Organoclay-enzyme film electrodes. Anal Chim Acta 2006; 578:145-55. [PMID: 17723706 DOI: 10.1016/j.aca.2006.06.075] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2006] [Revised: 06/27/2006] [Accepted: 06/28/2006] [Indexed: 10/24/2022]
Abstract
This paper aims at showing the interest of organoclays (clay minerals containing organic groups covalently attached to the inorganic particles) as suitable host matrices likely to immobilize enzymes onto electrode surfaces for biosensing applications. The organoclays used in this work were natural Cameroonian smectites grafted with either aminopropyl (AP) or trimethylpropylammonium (TMPA) groups. The first ones were exploited for their ability to anchor biomolecules by covalent bonding while the second category exhibited favorable electrostatic interactions with negatively charged enzymes due to ion exchange properties that were pointed out here by means of multisweep cyclic voltammetry. AP-clay materials were applied to the immobilization of glucose oxidase (GOD) and TMPA-clays for polyphenol oxidase (PPO) anchoring. When deposited onto the surface of platinum or glassy carbon electrodes as enzyme/organoclay films, these systems were evaluated as biosensing electrochemical devices for detection of glucose and catechol chosen as model analytes. The advantageous features of these organoclays were discussed by comparison to the performance of related film electrodes made of non-functionalized clays. It appeared that organoclays provide a favorable environment to enzymes activity, as highlighted from the biosensors characteristics and determination of Michaelis-Menten constants.
Collapse
Affiliation(s)
- Justin Kemmegne Mbouguen
- Laboratoire de Chimie Physique et Microbiologie pour l'Environnement, Unité Mixte de Recherche UMR 7564, CNRS-Université H. Poincaré Nancy I, 405, rue de Vandoeuvre, F-54600 Villers-les-Nancy, France
| | | | | |
Collapse
|
22
|
Shan D, Yao W, Xue H. Amperometric Detection of Glucose with Glucose Oxidase Immobilized in Layered Double Hydroxides. ELECTROANAL 2006. [DOI: 10.1002/elan.200603545] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
23
|
Abstract
Oxidoreductase enzymes catalyze single- or multi-electron reduction/oxidation reactions of small molecule inorganic or organic substrates, and they are integral to a wide variety of biological processes including respiration, energy production, biosynthesis, metabolism, and detoxification. All redox enzymes require a natural redox partner such as an electron-transfer protein (e.g. cytochrome, ferredoxin, flavoprotein) or a small molecule cosubstrate (e.g. NAD(P)H, dioxygen) to sustain catalysis, in effect to balance the substrate/product redox half-reaction. In principle, the natural electron-transfer partner may be replaced by an electrochemical working electrode. One of the great strengths of this approach is that the rate of catalysis (equivalent to the observed electrochemical current) may be probed as a function of applied potential through linear sweep and cyclic voltammetry, and insight to the overall catalytic mechanism may be gained by a systematic electrochemical study coupled with theoretical analysis. In this review, the various approaches to enzyme electrochemistry will be discussed, including direct and indirect (mediated) experiments, and a brief coverage of the theory relevant to these techniques will be presented. The importance of immobilizing enzymes on the electrode surface will be presented and the variety of ways that this may be done will be reviewed. The importance of chemical modification of the electrode surface in ensuring an environment conducive to a stable and active enzyme capable of functioning natively will be illustrated. Fundamental research into electrochemically driven enzyme catalysis has led to some remarkable practical applications. The glucose oxidase enzyme electrode is a spectacularly successful application of enzyme electrochemistry. Biosensors based on this technology are used worldwide by sufferers of diabetes to provide rapid and accurate analysis of blood glucose concentrations. Other applications of enzyme electrochemistry are in the sensing of macromolecular complexation events such as antigen–antibody binding and DNA hybridization. The review will include a selection of enzymes that have been successfully investigated by electrochemistry and, where appropriate, discuss their development towards practical biotechnological applications.
Collapse
|
24
|
Bridge K, Davis F, Collyer S, Higson S. Polydivinylbenzene/Ethylvinylbenzene Composite Membranes for the Optimization of a Whole Blood Glucose Sensor. ELECTROANAL 2006. [DOI: 10.1002/elan.200503399] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
25
|
Sokolovskaya LG, Sigolaeva LV, Eremenko AV, Gachok IV, Makhaeva GF, Strakhova NN, Malygin VV, Richardson RJ, Kurochkin IN. Improved Electrochemical Analysis of Neuropathy Target Esterase Activity by a Tyrosinase Carbon Paste Electrode Modified by 1-Methoxyphenazine Methosulfate. Biotechnol Lett 2005; 27:1211-8. [PMID: 16158266 DOI: 10.1007/s10529-005-0020-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2004] [Revised: 06/08/2005] [Accepted: 06/10/2005] [Indexed: 10/25/2022]
Abstract
A graphite-paste tyrosinase biosensor was improved by adding 1-methoxyphenazine methosulfate as a mediator. Mediator modification enhanced sensitivity to phenol 4-fold and long-term stability 3-fold. Phenol could be detected at 25 nM (S/N = 2) using an Ag/AgCl reference electrode. The biosensor was used to measure the activity of a toxicologically significant enzyme, neuropathy target esterase (NTE), which yields phenol by hydrolysis of the substrate, phenyl valerate. Using the new biosensor, blood and brain NTE inhibition by organophosphorus (OP) compounds with different neuropathic potencies were well correlated (r = 0.990, n = 7), supporting the use of blood NTE as a biochemical marker of exposure to neuropathic OP compounds.
Collapse
Affiliation(s)
- L G Sokolovskaya
- Faculty of Chemistry, Moscow State University, 119899, Moscow, Russia
| | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Mohammadi H, Amine A, Cosnier S, Mousty C. Mercury–enzyme inhibition assays with an amperometric sucrose biosensor based on a trienzymatic-clay matrix. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2005.04.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
27
|
Filho NLD, do Carmo DR, Gessner F, Rosa AH. Preparation of a Clay-modified Carbon Paste Electrode Based on 2-Thiazoline-2-thiol-hexadecylammonium Sorption for Sensitive Determination of Mercury. ANAL SCI 2005; 21:1309-16. [PMID: 16317899 DOI: 10.2116/analsci.21.1309] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A montmorillonite from Wyoming-USA was used to prepare an organo-clay complex, named 2-thiazoline-2-thiol-hexadecyltrimethylammonium-clay (TZT-HDTA-clay), for the purpose of the selective adsorption of the heavy metals ions and possible use as a chemically modified carbon paste electrode (CMCPE). Adsorption isotherms of Hg2+, Pb2+, Cd2+, Cu2+, and Zn2+ from aqueous solutions as a function of the pH were studied at 298 K. Conditions for quantitative retention and elution were established for each metal by batch and column methods. The organo-clay complex was very selective to Hg(II) in aqueous solution in which other metals and ions were also present. The accumulation voltammetry of Hg(II) was studied at a carbon paste electrode chemically modified with this material. The mercury response was evaluated with respect to the pH, electrode composition, preconcentration time, mercury concentration, "cleaning" solution, possible interferences and other variables. A carbon paste electrode modified by TZT-HDTA-clay showed two peaks: one cathodic peak at about 0.0 V and an anodic peak at 0.25 V, scanning the potential from -0.2 to 0.8 V (0.05 M KNO3 vs. Ag/AgCl). The anodic peak at 0.25 V presents excellent selectivity for Hg(II) ions in the presence of foreign ions. The detection limit was estimated as 0.1 microg L(-1). The precision of determination was satisfactory for the respective concentration level.
Collapse
Affiliation(s)
- Newton L Dias Filho
- Departamento de Física e Química, Unesp-Universidade Estadual Paulista, Ilha Solteira, SP, Brazil.
| | | | | | | |
Collapse
|
28
|
Shan D, Cosnier S, Mousty C. HRP/[Zn–Cr–ABTS] redox clay-based biosensor: design and optimization for cyanide detection. Biosens Bioelectron 2004; 20:390-6. [PMID: 15308245 DOI: 10.1016/j.bios.2004.02.008] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2003] [Revised: 02/04/2004] [Accepted: 02/11/2004] [Indexed: 11/30/2022]
Abstract
A novel inexpensive and simple amperometric biosensor, based on the immobilization of HRP into redox active [Zn-Cr-ABTS] layered double hydroxide, is applied to the determination of cyanide. The electrochemical transduction step corresponds to the reduction at 0.0 V of ABTS+* enzymatically formed in the presence of H2O2. The biosensor has a fast response to H2O2 (8s) with a linear range of 1.7 x 10(-9) to 2.1 x 10(-6) M and a sensitivity of 875 mA M(-1) cm(-2). The apparent Michaelis-Menten constant (KMapp) is 12 microM. The detection of cyanide is performed via its non competitive inhibiting action on the HRP/[Zn-Cr-ABTS] electrode. The concentration range of the linear response and the apparent inhibition constant (ki) are 5 x 10(-9) to 4 x 10(-8) and 1.4 x 10 (-7) M, respectively.
Collapse
Affiliation(s)
- Dan Shan
- Laboratoire d'Electrochimie Organique et de Photochimie Rédox, UMR CNRS 5630, Institut de Chimie Moléculaire de Grenoble, FR CNRS 2607, Université Joseph Fourier, Grenoble, France
| | | | | |
Collapse
|
29
|
Shan D, Cosnier S, Mousty C. Layered double hydroxides: an attractive material for electrochemical biosensor design. Anal Chem 2004; 75:3872-9. [PMID: 14572056 DOI: 10.1021/ac030030v] [Citation(s) in RCA: 177] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Electrochemical biosensors for phenol determination were developed based on the immobilization of polyphenol oxidase (PPO) within two different clay matrixes, one anionic (layered double hydroxide, LDH) and the other cationic (Laponite). The biosensor based on the enzyme immobilized in [Zn-Al-Cl] LDH shows greater sensitivity (7807 mA M(-1) cm(-2)) and maximum current (492 microA cm(-2)). Biosensor characteristics, such as Michaelis-Menten constant, recycling constant, activation energy, and permeability highlight the advantages of LDH matrixes to immobilize PPO. It appears that LDH provides a favorable environment to PPO activity. The best PPO/[Zn-Al-Cl] configuration was used to determine five different phenol derivatives reaching extremely sensitive detection limits (< or = 1 nM).
Collapse
Affiliation(s)
- Dan Shan
- Laboratoire d'Electrochimie Organique et de Photochimie Redox, UMR CNRS 5630, Institut de Chimie Moléculaire de Grenoble (FR CNRS 2607), Université Joseph Fourier, 38041 Grenoble Cedex 9, France
| | | | | |
Collapse
|