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Alkassar M, Leonardo S, Diogène J, Campàs M. Immobilisation of Neuro-2a cells on electrodes and electrochemical detection of MTT formazan crystals to assess their viability. Bioelectrochemistry 2022; 148:108274. [DOI: 10.1016/j.bioelechem.2022.108274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/15/2022] [Accepted: 09/20/2022] [Indexed: 11/02/2022]
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2
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Bensana A, Achi F. Analytical performance of functional nanostructured biointerfaces for sensing phenolic compounds. Colloids Surf B Biointerfaces 2020; 196:111344. [PMID: 32877829 DOI: 10.1016/j.colsurfb.2020.111344] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 08/09/2020] [Accepted: 08/19/2020] [Indexed: 12/14/2022]
Abstract
Electrochemical biointerfaces are constructed with a wide range of nanomaterials and conducting polymers that strongly affect the analytical performance of biosensors. The analysis of progress toward electrochemical sensing platforms offers opportunities to provide devices for commercial use. The investigation of different methods for the synthesis of phenol biointerfaces leads to design challenges in the field of monitoring phenolic compounds. This paper review the innovative strategies and feature techniques in the construction of phenolic compound biosensors. The focus was made on the preparation methods of nanostructures and nanomaterials design for catalytic improvements of sensing interfaces. The paper also provides a comprehensive overview in the field of enzyme immobilization approaches at solid supports and technical formation of polymer nanocomposites, as well as applications of hybrid organic-inorganic nanocomposites in phenolic biosensors. This review also highlights the recent progress in the electrochemical detection of phenolic compounds and summarizes analytical performance parameters including sensitivity, storage stability, limit of detection, linear range, and Michaelis-Menten kinetic analysis. It also emphasizes advances from the past decade including technical challenges for the construction of suitable biointerfaces for monitoring phenolic compounds.
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Affiliation(s)
- Amira Bensana
- Departement of Process Engineering, Laboratoire de Génie des Procédés Chimiques (LGPC), Faculty of Technology, Ferhat Abbas University Sétif-1-, Setif, 19000, Algeria
| | - Fethi Achi
- Laboratory of Valorisation and Promotion of Saharian Ressources (VPSR), Kasdi Merbah University, Ouargla, 30000, Algeria.
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3
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Raymundo-Pereira PA, Silva TA, Caetano FR, Ribovski L, Zapp E, Brondani D, Bergamini MF, Marcolino LH, Banks CE, Oliveira ON, Janegitz BC, Fatibello-Filho O. Polyphenol oxidase-based electrochemical biosensors: A review. Anal Chim Acta 2020; 1139:198-221. [PMID: 33190704 DOI: 10.1016/j.aca.2020.07.055] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 07/14/2020] [Accepted: 07/20/2020] [Indexed: 02/06/2023]
Abstract
The detection of phenolic compounds is relevant not only for their possible benefits to human health but also for their role as chemical pollutants, including as endocrine disruptors. The required monitoring of such compounds on-site or in field analysis can be performed with electrochemical biosensors made with polyphenol oxidases (PPO). In this review, we describe biosensors containing the oxidases tyrosinase and laccase, in addition to crude extracts and tissues from plants as enzyme sources. From the survey in the literature, we found that significant advances to obtain sensitive, robust biosensors arise from the synergy reached with a diversity of nanomaterials employed in the matrix. These nanomaterials are mostly metallic nanoparticles and carbon nanostructures, which offer a suitable environment to preserve the activity of the enzymes and enhance electron transport. Besides presenting a summary of contributions to electrochemical biosensors containing PPOs in the last five years, we discuss the trends and challenges to take these biosensors to the market, especially for biomedical applications.
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Affiliation(s)
| | - Tiago A Silva
- Departamento de Metalurgia e Química, Centro Federal de Educação Tecnológica de Minas Gerais (CEFET-MG), 35180-008, Timóteo, MG, Brazil
| | - Fábio R Caetano
- Laboratório de Sensores Eletroquímicos (LabSensE), Departamento de Química, Universidade Federal Do Paraná (UFPR), 81.531-980, Curitiba, PR, Brazil
| | - Laís Ribovski
- São Carlos Institute of Physics, University of São Paulo, São Carlos, SP, Brazil
| | - Eduardo Zapp
- Department of Exact Sciences and Education, Federal University of Santa Catarina, 89036-256, Brazil
| | - Daniela Brondani
- Department of Exact Sciences and Education, Federal University of Santa Catarina, 89036-256, Brazil
| | - Marcio F Bergamini
- Laboratório de Sensores Eletroquímicos (LabSensE), Departamento de Química, Universidade Federal Do Paraná (UFPR), 81.531-980, Curitiba, PR, Brazil
| | - Luiz H Marcolino
- Laboratório de Sensores Eletroquímicos (LabSensE), Departamento de Química, Universidade Federal Do Paraná (UFPR), 81.531-980, Curitiba, PR, Brazil
| | - Craig E Banks
- Faculty of Science and Engineering, Manchester Metropolitan University, Chester Street, Manchester, M1 5GD, UK
| | - Osvaldo N Oliveira
- São Carlos Institute of Physics, University of São Paulo, São Carlos, SP, Brazil
| | - Bruno C Janegitz
- Department of Nature Sciences, Mathematics and Education, Federal University of São Carlos, 13600-970, Araras, SP, Brazil.
| | - Orlando Fatibello-Filho
- Department of Chemistry, Federal University of São Carlos, 13560-970, São Carlos, SP, Brazil.
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Screen-Printed Electrodes (SPE) for In Vitro Diagnostic Purpose. Diagnostics (Basel) 2020; 10:diagnostics10080517. [PMID: 32722552 PMCID: PMC7460409 DOI: 10.3390/diagnostics10080517] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/11/2020] [Accepted: 07/21/2020] [Indexed: 02/07/2023] Open
Abstract
Due to rapidly spreading infectious diseases and the high incidence of other diseases such as cancer or metabolic syndrome, there is a continuous need for the development of rapid and accurate diagnosis methods. Screen-printed electrodes-based biosensors have been reported to offer reliable results, with high sensitivity and selectivity and, in some cases, low detection limits. There are a series of materials (carbon, gold, platinum, etc.) used for the manufacturing of working electrodes. Each version comes with advantages, as well as challenges for their functionalization. Thus, the aim is to review the most promising biosensors developed using screen-printed electrodes for the detection/quantification of proteins, biomarkers, or pathogenic microorganisms.
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Ji J, Zhu X, Han D, Li M, Zhang Q, Shu Y, Cheng Z, Zhang W, Hua E, Sang S. AC Electrodeposition of PEDOT Films in Protic Ionic Liquids for Long-Term Stable Organic Electrochemical Transistors. MOLECULES (BASEL, SWITZERLAND) 2019; 24:molecules24224105. [PMID: 31739407 PMCID: PMC6891491 DOI: 10.3390/molecules24224105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/08/2019] [Accepted: 11/11/2019] [Indexed: 12/22/2022]
Abstract
Poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS)-based organic electrochemical transistors (OECTs) are widely utilized to construct highly sensitive biosensors. However, the PSS phase exhibits insulation, weak acidity, and aqueous instability. In this work, we fabricated PEDOT OECT by alternating current electrodeposition in protic ionic liquids. The steady-state characteristics were demonstrated to be stable in long-term tests. In detail, the maximum transconductance, the on/off current ratio, and the hysteresis were stable at 2.79 mS, 504, and 0.12 V, respectively. Though the transient behavior was also stable, the time constant could reach 218.6 ms. Thus, the trade-off between switching speed and stability needs to be considered in applications that require a rapid response.
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Affiliation(s)
- Jianlong Ji
- College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China; (X.Z.); (D.H.); (M.L.); (Q.Z.); (W.Z.)
- Correspondence: (J.J.); (E.H.); (S.S.)
| | - Xiaoxian Zhu
- College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China; (X.Z.); (D.H.); (M.L.); (Q.Z.); (W.Z.)
| | - Dan Han
- College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China; (X.Z.); (D.H.); (M.L.); (Q.Z.); (W.Z.)
| | - Mangmang Li
- College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China; (X.Z.); (D.H.); (M.L.); (Q.Z.); (W.Z.)
| | - Qiang Zhang
- College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China; (X.Z.); (D.H.); (M.L.); (Q.Z.); (W.Z.)
| | - Yang Shu
- Department of Chemistry, Colleges of Sciences, Northeastern University, Shenyang 110819, China;
| | - Zhengdong Cheng
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843-3122, USA;
| | - Wendong Zhang
- College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China; (X.Z.); (D.H.); (M.L.); (Q.Z.); (W.Z.)
| | - Er Hua
- Chemical Science and Engineering College, North Minzu University, Ningxia 750021, China
- Correspondence: (J.J.); (E.H.); (S.S.)
| | - Shengbo Sang
- College of Information and Computer, Taiyuan University of Technology, Taiyuan 030024, China; (X.Z.); (D.H.); (M.L.); (Q.Z.); (W.Z.)
- Correspondence: (J.J.); (E.H.); (S.S.)
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Hooda V, Kumar V, Gahlaut A, Hooda V. Alcohol quantification: recent insights into amperometric enzyme biosensors. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2017; 46:398-410. [DOI: 10.1080/21691401.2017.1315426] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Vinita Hooda
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Vikas Kumar
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Anjum Gahlaut
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Vikas Hooda
- Centre for Biotechnology, Maharshi Dayanand University, Rohtak, Haryana, India
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Mohamed HM. Screen-printed disposable electrodes: Pharmaceutical applications and recent developments. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2016.02.010] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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Du CX, Han L, Dong SL, Li LH, Wei Y. A novel procedure for fabricating flexible screen-printed electrodes with improved electrochemical performance. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1757-899x/137/1/012060] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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10
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Eguílaz M, Gutierrez F, González-Domínguez JM, Martínez MT, Rivas G. Single-walled carbon nanotubes covalently functionalized with polytyrosine: A new material for the development of NADH-based biosensors. Biosens Bioelectron 2016; 86:308-314. [PMID: 27387261 DOI: 10.1016/j.bios.2016.06.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 06/01/2016] [Accepted: 06/02/2016] [Indexed: 12/28/2022]
Abstract
We report for the first time the use of single-walled carbon nanotubes (SWCNT) covalently functionalized with polytyrosine (Polytyr) (SWCNT-Polytyr) as a new electrode material for the development of nicotinamide adenine dinucleotide (NADH)-based biosensors. The oxidation of glassy carbon electrodes (GCE) modified with SWCNT-Polytyr at potentials high enough to oxidize the tyrosine residues have allowed the electrooxidation of NADH at low potentials due to the catalytic activity of the quinones generated from the primary oxidation of tyrosine without any additional redox mediator. The amperometric detection of NADH at 0.200V showed a sensitivity of (217±3)µAmM(-1)cm(-2) and a detection limit of 7.9nM. The excellent electrocatalytic activity of SWCNT-Polytyr towards NADH oxidation has also made possible the development of a sensitive ethanol biosensor through the immobilization of alcohol dehydrogenase (ADH) via Nafion entrapment, with excellent analytical characteristics (sensitivity of (5.8±0.1)µAmM(-1)cm(-2), detection limit of 0.67µM) and very successful application for the quantification of ethanol in different commercial beverages.
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Affiliation(s)
- Marcos Eguílaz
- INFIQC, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba. Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Fabiana Gutierrez
- INFIQC, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba. Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Jose Miguel González-Domínguez
- Grupo de nanoestructuras de carbono y Nanotecnología, Departamento de Nanotecnología, Instituto de Carboquímica (CSIC), 50018 Zaragoza, Spain
| | - María T Martínez
- Grupo de nanoestructuras de carbono y Nanotecnología, Departamento de Nanotecnología, Instituto de Carboquímica (CSIC), 50018 Zaragoza, Spain.
| | - Gustavo Rivas
- INFIQC, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba. Ciudad Universitaria, 5000 Córdoba, Argentina.
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11
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Determination of Rutin in Black Tea by Adsorption Voltammetry (AdV) in the Presence of Morin and Quercetin. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0538-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Barsan MM, Pifferi V, Falciola L, Brett CMA. New CNT/poly(brilliant green) and CNT/poly(3,4-ethylenedioxythiophene) based electrochemical enzyme biosensors. Anal Chim Acta 2016; 927:35-45. [PMID: 27237835 DOI: 10.1016/j.aca.2016.04.049] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 04/21/2016] [Accepted: 04/22/2016] [Indexed: 12/27/2022]
Abstract
A combination of the electroactive polymer poly(brilliant green) (PBG) or conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) with carbon nanotubes to obtain CNT/PBG and CNT/PEDOT modified carbon film electrodes (CFE) has been investigated as a new biosensor platform, incorporating the enzymes glucose oxidase (GOx) as test enzyme, alcohol oxidase (AlcOx) or alcohol dehydrogenase (AlcDH). The sensing parameters were optimized for all biosensors based on CNT/PBG/CFE, CNT/PEDOT/CFE platforms. Under optimized conditions, both GOx biosensors exhibited very similar sensitivities, while in the case of AlcOx and AlcDH biosensors, AlcOx/CNT/PBG/CFE was found to give a higher sensitivity and lower detection limit. The influence of dissolved O2 on oxidase-biosensor performance was investigated and was shown to be different for each enzyme. Comparisons were made with similar reported biosensors, showing the advantages of the new biosensors, and excellent selectivity against potential interferents was successfully demonstrated. Finally, alcohol biosensors were successfully used for the determination of ethanol in alcoholic beverages.
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Affiliation(s)
- Madalina M Barsan
- Department of Chemistry, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Valentina Pifferi
- Department of Chemistry, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal; Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy
| | - Luigi Falciola
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy
| | - Christopher M A Brett
- Department of Chemistry, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal.
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13
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Wang D, Dou W, Chen Y, Zhao G. Enzyme-functionalized electrochemical immunosensor based on electrochemically reduced graphene oxide and polyvinyl alcohol-polydimethylsiloxane for the detection of Salmonella pullorum & Salmonella gallinarum. RSC Adv 2014. [DOI: 10.1039/c4ra09901j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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14
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Wang D, Dou W, Zhao G, Chen Y. Immunosensor based on electrodeposition of gold-nanoparticles and ionic liquid composite for detection of Salmonella pullorum. J Microbiol Methods 2014; 106:110-118. [PMID: 25193438 DOI: 10.1016/j.mimet.2014.08.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 08/10/2014] [Accepted: 08/26/2014] [Indexed: 11/17/2022]
Abstract
In order to increase the reproducibility and stability of electrochemical immunosensor, which is a key issue for its application and popularization, an accurate and stable immunosensor for rapid detection of Salmonella pullorum (S. pullorum) was proposed in this study. The immunosensor was fabricated by modifying Screen-printed Carbon Electrode (SPCE) with electrodeposited gold nanoparticles (AuNPs), HRP-labeled anti-S. pullorum and ionic liquids (ILs) (AuNP/HRP/IL). AuNPs are electrodeposited on the working electrode surface to increase the amount of antibodies that bind to the electrode and then modified with ILs to protect the antibodies from being inactivated in the test environment and maintain their biological activity and the stability of the detection electrode. The electrochemical characteristics of the stepwise modified electrodes and the detection of S. pullorum were investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). As shown in the results of the experiments, AuNPs with unique electrochemical properties as well as biocompatibility characteristics have been proven to be able to strengthen the antibody combination effectively and to increase the electrochemical response signal. In addition, a crucial assessment regarding implementation of stability and reproducibility analysis of a range of immunosensors is provided. We found that application of AuNPs/ILs in the immune modified electrodes showed obvious improvement when compared with other groups. Given their high levels of reproducibility, stability, target specificity and sensitivity, AuNPs and ILs were considered to be excellent elements for electrode modification.
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Affiliation(s)
- Dan Wang
- Food Safety Key Lab of Zhejiang Province, College of Food Science and Biotechnology Engineering, Zhejiang Gongshang University, Hangzhou 310035, PR China
| | - Wenchao Dou
- Food Safety Key Lab of Zhejiang Province, College of Food Science and Biotechnology Engineering, Zhejiang Gongshang University, Hangzhou 310035, PR China
| | - Guangying Zhao
- Food Safety Key Lab of Zhejiang Province, College of Food Science and Biotechnology Engineering, Zhejiang Gongshang University, Hangzhou 310035, PR China.
| | - Yan Chen
- Food Safety Key Lab of Zhejiang Province, College of Food Science and Biotechnology Engineering, Zhejiang Gongshang University, Hangzhou 310035, PR China
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Taleat Z, Khoshroo A, Mazloum-Ardakani M. Screen-printed electrodes for biosensing: a review (2008–2013). Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1181-1] [Citation(s) in RCA: 209] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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16
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Spain E, Keyes TE, Forster RJ. Polypyrrole–gold nanoparticle composites for highly sensitive DNA detection. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.07.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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17
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Kesik M, Kocer O, Kanik FE, Unlu NA, Rende E, Aslan-Gurel E, Rossi RM, Udum YA, Toppare L. Effective and Functional Surface Design for Biosensing Applications Based on a Novel Conducting Polymer and PMMA/Clay Nanocomposite. ELECTROANAL 2013. [DOI: 10.1002/elan.201300193] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Applications of Surface Modified Ionic Liquid/Nanomaterial Composite in Electrochemical Sensors and Biosensors. BIONANOSCIENCE 2013. [DOI: 10.1007/s12668-013-0094-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Hua E, Wang L, Jing X, Chen C, Xie G. One-step fabrication of integrated disposable biosensor based on ADH/NAD+/meldola's blue/graphitized mesoporous carbons/chitosan nanobiocomposite for ethanol detection. Talanta 2013; 111:163-9. [PMID: 23622540 DOI: 10.1016/j.talanta.2013.02.064] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 02/25/2013] [Accepted: 02/27/2013] [Indexed: 11/18/2022]
Abstract
A novel strategy to simplify the dehydrogenase-based electrochemical biosensor fabrication through one-step drop-coating nanobiocomposite on a screen printed electrode (SPE) was developed. The nanobiocomposite was prepared by successively adding graphitized mesoporous carbons (GMCs), meldola's blue (MDB), alcohol dehydrogenase (ADH) and cofactor nicotinamide adenine dinucleotide (NAD(+)) in chitosan (CS) solution. MDB/GMCs/CS film was prepared. Cyclic voltammetry measurements demonstrated that MDB was strongly adsorbed on GMCs. After optimizing the concentration of MDB and the working potential, the MDB/GMCs/CS film presented a fast amperometric response (5s), excellent sensitivity (10.36 nA μM(-1)), wide linear range (10-410 μM) toward NADH and without any other interference signals (such as AA, UA, DA, H2O2 and metal ions). Furthermore, concentrations of ADH and NAD(+) in nanobiocomposite and the detection conditions (temperature and pH) were also optimized. The constructed disposable ethanol biosensor showed an excellent linear response ranged from 0.5 to 15 mM with high sensitivity (67.28 nA mM(-1)) and a low limit of detection (80 μM) and a remarkable long-term stability (40 days). The intra-batch and inter-batch variation coefficients were both less than 5% (n=5). The ethanol recovery test demonstrated that the proposed biosensor offered a remarkable and accurate method for ethanol detection in the real blood samples.
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Affiliation(s)
- Erhui Hua
- Key Laboratory of Laboratory Medical Diagnostics of Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, No. 1 Yi Xue Yuan Road, Chongqing 400016, PR China
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Spain E, Keyes TE, Forster RJ. DNA sensor based on vapour polymerised pedot films functionalised with gold nanoparticles. Biosens Bioelectron 2013; 41:65-70. [DOI: 10.1016/j.bios.2012.06.046] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 06/20/2012] [Accepted: 06/21/2012] [Indexed: 10/28/2022]
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Walcarius A, Minteer SD, Wang J, Lin Y, Merkoçi A. Nanomaterials for bio-functionalized electrodes: recent trends. J Mater Chem B 2013; 1:4878-4908. [DOI: 10.1039/c3tb20881h] [Citation(s) in RCA: 261] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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22
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Zanardi C, Terzi F, Seeber R. Polythiophenes and polythiophene-based composites in amperometric sensing. Anal Bioanal Chem 2012; 405:509-31. [PMID: 22941065 DOI: 10.1007/s00216-012-6318-7] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Revised: 07/25/2012] [Accepted: 07/30/2012] [Indexed: 11/26/2022]
Abstract
This overview of polythiophene-based materials provides a critical examination of meaningful examples of applications of similar electrode materials in electroanalysis. The advantages arising from the use of polythiophene derivatives in such an applicative context is discussed by considering the organic conductive material as such, and as one of the components of hybrid materials. The rationale at the basis of the combination of two or even more individual components into a hybrid material is discussed with reference to the active electrode processes and the consequent possible improvements of the electroanalytical performance. In this respect, study cases are presented considering different analytes chosen among those that are most frequently reported within the classes of organics and inorganics. The use of a polythiophene matrix to stably fix biological elements at the electrode surface for the development of catalytic biosensors and genosensors is also discussed. Finally, a few possible lines along which the next research in the field could be fruitfully pursued are outlined. Furthermore, the work still to be done to exploit the possibilities offered by novel products of organic synthesis, even along paths already traced in other fields of electrochemistry, is discussed.
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Affiliation(s)
- C Zanardi
- Department of Chemical and Geological Sciences, University of Modena and Reggio E, Modena, Italy
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Recent developments and applications of screen-printed electrodes in environmental assays—A review. Anal Chim Acta 2012; 734:31-44. [DOI: 10.1016/j.aca.2012.05.018] [Citation(s) in RCA: 365] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Revised: 05/04/2012] [Accepted: 05/12/2012] [Indexed: 11/21/2022]
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Amperometric vitamin C biosensor based on the immobilization of ascorbate oxidase into the biocompatible sandwich-type composite film. Appl Biochem Biotechnol 2012; 167:2023-38. [PMID: 22644641 DOI: 10.1007/s12010-012-9711-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Accepted: 04/23/2012] [Indexed: 10/28/2022]
Abstract
Ascorbate oxidase (AO), a biologically active macromolecule, was successfully immobilized into a biocompatible sandwich-type composite film for developing the vitamin C (VC) biosensor, and the content of VC in commercial juices was amperometrically determined. The biocompatible and conducting poly(3,4-ethylenedioxythiophene) composite film and highly stable and selective multiwalled carbon nanotubes -Nafion composite film were prepared as inner and outer films of biosensor. AO molecules were immobilized between these two composite films. The as-fabricated biosensor displayed an excellent bioelectrocatalytic performance towards the oxidation of VC, a fast current response, a low working potential, a high sensitivity, a wide linear range, and a low detection limit. Moreover, the working mechanism of the biosensor was proposed, and its kinetics was also discussed. In addition, the specificity, reproducibility, and feasibility of the as-fabricated biosensor were also evaluated. Good results of the VC determination in commercial juices indicated that the as-fabricated biosensor was a potential candidate for the electrochemical determination of VC in agricultural crops. Inner and outer films provided a promising platform for the immobilization of biologically active species.
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