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Zhang L, Ma Z, Fan Y, Jiao S, Yu Z, Chen X. Investigation of H 2O 2 Electrochemical Behavior on Ferricyanide-Confined Electrode Based on Ionic Liquid-Functionalized Silica-Mesostructured Cellular Foam. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27249028. [PMID: 36558160 PMCID: PMC9785782 DOI: 10.3390/molecules27249028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022]
Abstract
In this work, ionic liquid (IL) of 1-propyl-3-methyl imidazolium chloride-functionalized silica-mesostructured cellular foam (MCF) was prepared. The obtained MCF-IL was used to construct the Fe(CN)63--confined electrode (MCF-IL-Fe(CN)63-/PVA) and H2O2 electrochemical behavior on the electrode was investigated. It was found that H2O2 was oxidized on the freshly prepared electrode while catalytically electro-reduced on the acid pretreated one. Cyclic voltametric results revealed that the real catalyst for catalytic reduction of H2O2 was Prussian blue (PB) rather than Fe(CN)63-. The electrocatalytic ability of the acid-pretreated MCF-IL-Fe(CN)63-/PVA electrode offered a wide linear range for H2O2 detection. The present study on H2O2 electrochemical behavior on an MCF-IL-Fe(CN)63-/PVA electrode might provide useful information for further developing integrated Fe(CN)63--mediated biosensors as H2O2 is extensively involved in the classic reaction containing oxidase enzymes.
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Affiliation(s)
- Ling Zhang
- College of Chemistry and Chemical Engineering, Shenyang Normal University of China, Shenyang 110034, China
| | - Zhenkuan Ma
- College of Chemistry and Chemical Engineering, Shenyang Normal University of China, Shenyang 110034, China
| | - Yun Fan
- College of Chemistry and Chemical Engineering, Shenyang Normal University of China, Shenyang 110034, China
| | - Songlin Jiao
- College of Chemistry and Chemical Engineering, Shenyang Normal University of China, Shenyang 110034, China
| | - Zhan Yu
- College of Chemistry and Chemical Engineering, Shenyang Normal University of China, Shenyang 110034, China
| | - Xuwei Chen
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box332, Shenyang 110819, China
- Correspondence:
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2
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Chauhan R, Gill AA, Nate Z, Karpoormath R. Highly selective electrochemical detection of ciprofloxacin using reduced graphene oxide/poly(phenol red) modified glassy carbon electrode. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114254] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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3
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Development of a new and simple method for the detection of histidine-tagged proteins based on thionine-chitosan/gold nanoparticles/horseradish peroxidase. Biomed Microdevices 2020; 22:11. [DOI: 10.1007/s10544-019-0464-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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4
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A novel electrochemical immunosensor based on Au nanoparticles and horseradish peroxidase signal amplification for ultrasensitive detection of α-fetoprotein. Biomed Microdevices 2018; 20:46. [PMID: 29869001 DOI: 10.1007/s10544-018-0291-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
An electrochemical double-layer Au nanoparticle membrane immunosensor was developed using an electrochemical biosensing signal amplification system with Au nanoparticles, thionine, chitosan, and horseradish peroxidase, which was fabricated using double self-adsorption of Au nanoparticle sol followed by anti-α-fetoprotein Balb/c mouse monoclonal antibody adsorption. The AuNPs sol was characterized by spectrum scanning and transmission electron microscopy. The immunosensor was characterized by atomic force microscopy, cyclic voltammetry, and alternating-current impedance during each stage of adsorption and assembly. The amperometric I-t curve method was used to measure α-fetoprotein (AFP) diluted in phosphate buffered saline. The result indicated a wide linear range, and the change rate of steady-current before and after immune response had linear correlation within the range 0.1-104 pg/mL AFP. The current change rate equation was △I = 5.82334 lgC + 37.01195 (R2 = 0.9922). The lowest limit of detection was 0.03 pg/mL (S/N = 3), and the reproducibility of the sensor was good. Additionally, the sensor could be stably stored above phosphate buffered saline at 4 °C for more than 24 days. More importantly, the sensor is label-free, reagentless and low fouling, making it capable of assaying AFP in real serum samples without suffering from significant interference or biofouling.
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Chen C, Li X, Zhao D, Li Y, Shi H, Ma G, Su Z. Precise control of agarose media pore structure by regulating cooling rate. J Sep Sci 2017; 40:4467-4474. [PMID: 28929589 DOI: 10.1002/jssc.201700546] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 09/01/2017] [Accepted: 09/08/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Chao Chen
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering; Chinese Academy of Sciences; Beijing P. R. China
| | - Xiunan Li
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering; Chinese Academy of Sciences; Beijing P. R. China
| | - Dawei Zhao
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering; Chinese Academy of Sciences; Beijing P. R. China
| | - Yaqiong Li
- Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy; Sichuan University; Chengdu P. R. China
| | - Hong Shi
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering; Chinese Academy of Sciences; Beijing P. R. China
| | - Guanghui Ma
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering; Chinese Academy of Sciences; Beijing P. R. China
| | - Zhiguo Su
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering; Chinese Academy of Sciences; Beijing P. R. China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM); Nanjing P. R. China
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Quantitative differentiation of multiple virus in blood using nanoporous silicon oxide immunosensor and artificial neural network. Biosens Bioelectron 2017; 98:180-188. [PMID: 28672193 DOI: 10.1016/j.bios.2017.06.046] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 06/14/2017] [Accepted: 06/22/2017] [Indexed: 12/25/2022]
Abstract
In spite of the rapid developments in various nanosensor technologies, it still remains challenging to realize a reliable ultrasensitive electrical biosensing platform which will be able to detect multiple viruses in blood simultaneously with a fairly high reproducibility without using secondary labels. In this paper, we have reported quantitative differentiation of Hep-B and Hep-C viruses in blood using nanoporous silicon oxide immunosensor array and artificial neural network (ANN). The peak frequency output (fp) from the steady state sensitivity characteristics and the first cut off frequency (fc) from the transient characteristics have been considered as inputs to the multilayer ANN. Implementation of several classifier blocks in the ANN architecture and coupling them with both the sensor chips, functionalized with Hep-B and Hep-C antibodies have enabled the quantification of the viruses with an accuracy of around 95% in the range of 0.04fM-1pM and with an accuracy of around 90% beyond 1pM and within 25nM in blood serum. This is the most sensitive report on multiple virus quantification using label free method.
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Thenmozhi K, Narayanan SS. Horseradish peroxidase and toluidine blue covalently immobilized leak-free sol-gel composite biosensor for hydrogen peroxide. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:223-230. [DOI: 10.1016/j.msec.2016.08.075] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 08/05/2016] [Accepted: 08/29/2016] [Indexed: 11/16/2022]
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8
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A Novel Tetrahydrocannabinol Electrochemical Nano Immunosensor Based on Horseradish Peroxidase and Double-Layer Gold Nanoparticles. Molecules 2016; 21:molecules21101377. [PMID: 27763523 PMCID: PMC6274132 DOI: 10.3390/molecules21101377] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 10/09/2016] [Accepted: 10/12/2016] [Indexed: 11/17/2022] Open
Abstract
In the current study, a novel double-layer gold nanoparticles-electrochemical immunosensor electrode immobilized with tetrahydrocannabinol (THC) antibody derived from Balb/c mice was developed. To increase the fixed quantity of antibodies and electrochemical signals, an electrochemical biosensing signal amplification system was utilized with gold nanoparticles-thionine-chitosan absorbing horseradish peroxidase (HRP). In addition, a transmission electron microscope (TEM) was used to characterize the nanogold solution. To evaluate the quality of the immunosensor, the amperometric I-t curve method was applied to determine the THC in PBS. The results showed that the response current had a good linear correlation with the THC concentration range from 0.01~103 ng/mL with a correlation coefficient of 0.9986. The lowest detection limit for THC was 3.3 pg/mL (S/N = 3). Moreover, it was validated with high sensitivity and reproducibility. Apparently, the immunosensor may be a very useful tool for monitoring the THC.
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Liu Y, Lord H, Maciążek-Jurczyk M, Jolly S, Hussain MA, Pawliszyn J. Development of an immunoaffinity solid phase microextraction method for the identification of penicillin binding protein 2a. J Chromatogr A 2014; 1364:64-73. [DOI: 10.1016/j.chroma.2014.08.042] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2014] [Revised: 07/22/2014] [Accepted: 08/11/2014] [Indexed: 10/24/2022]
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A label-free and high sensitive aptamer biosensor based on hyperbranched polyester microspheres for thrombin detection. Anal Chim Acta 2014; 850:33-40. [PMID: 25441157 DOI: 10.1016/j.aca.2014.08.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Revised: 08/06/2014] [Accepted: 08/07/2014] [Indexed: 11/23/2022]
Abstract
In this paper, we have synthesized hyperbranched polyester microspheres with carboxylic acid functional groups (HBPE-CA) and developed a label-free electrochemical aptamer biosensor using thrombin-binding aptamer (TBA) as receptor for the measurement of thrombin in whole blood. The indium tin oxide (ITO) electrode surface modified with HBPE-CA microspheres was grafted with TBA, which has excellent binding affinity and selectivity for thrombin. Binding of the thrombin at the modified ITO electrode surface greatly restrained access of electrons for a redox probe of [Fe(CN)6](3-/4-). Moreover, the aptamer biosensor could be used for detection of thrombin in whole blood, a wide detection range (10fM-100nM) and a detection limit on the order of 0.90fM were demonstrated. Control experiments were also carried out by using bull serum albumin (BSA) and lysozyme in the absence of thrombin. The good stability and repeatability of this aptamer biosensor were also proved. We expect that this demonstration will lead to the development of highly sensitive label-free sensors based on aptamer with lower cost than current technology. The integration of the technologies, which include anticoagulant, sensor and nanoscience, will bring significant input to high-performance biosensors relevant to diagnostics and therapy of interest for human health.
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11
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A label-free impedimetric immunosensor for detection of 1-aminohydantoin residue in food samples based on sol–gel embedding antibody. Food Control 2014. [DOI: 10.1016/j.foodcont.2013.11.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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12
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Wang G, He X, Chen L, Zhu Y, Zhang X. Ultrasensitive IL-6 electrochemical immunosensor based on Au nanoparticles-graphene-silica biointerface. Colloids Surf B Biointerfaces 2013; 116:714-9. [PMID: 24370115 DOI: 10.1016/j.colsurfb.2013.11.015] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 11/05/2013] [Accepted: 11/09/2013] [Indexed: 01/04/2023]
Abstract
An Interleukin-6 (IL-6) electrochemical immunosensor was fabricated based on the Au nanoparticles (AuNP)-graphene-silica sol-gel as immobilization biointerface and AuNP-polydopamine (PDA)@carbon nanotubes (CNT) as the label of HRP-bound antibodies. The AuNP-graphene-silica sol-gel film was prepared in situ and modified on the ITO electrode, providing a stable network for the immobilization of antibody and exhibiting a dynamic working range of 1-40 pg/mL with a low detection limit of 0.3 pg/mL IL-6 (at 3s). The results of serum samples with the sensor received an acceptable agreement with the ELISA method. Importantly, this method provided a promising ultrasensitive assay strategy for clinical applications.
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Affiliation(s)
- Guangfeng Wang
- College of Chemistry and Materials Science, Key Laboratory for Functional Molecular Solids of the Education Ministry of China, Anhui Key Laboratory of Chem-Biosensing, Center for Nano Science and Technology, Anhui Normal University, Wuhu 241000, PR China; Anhui Key Laboratory of Controllable Chemistry Reaction & Material Chemical Engineering, HeFei University of Technology, Hefei 230009, PR China
| | - Xiuping He
- College of Chemistry and Materials Science, Key Laboratory for Functional Molecular Solids of the Education Ministry of China, Anhui Key Laboratory of Chem-Biosensing, Center for Nano Science and Technology, Anhui Normal University, Wuhu 241000, PR China
| | - Ling Chen
- College of Chemistry and Materials Science, Key Laboratory for Functional Molecular Solids of the Education Ministry of China, Anhui Key Laboratory of Chem-Biosensing, Center for Nano Science and Technology, Anhui Normal University, Wuhu 241000, PR China
| | - Yanhong Zhu
- College of Chemistry and Materials Science, Key Laboratory for Functional Molecular Solids of the Education Ministry of China, Anhui Key Laboratory of Chem-Biosensing, Center for Nano Science and Technology, Anhui Normal University, Wuhu 241000, PR China
| | - Xiaojun Zhang
- College of Chemistry and Materials Science, Key Laboratory for Functional Molecular Solids of the Education Ministry of China, Anhui Key Laboratory of Chem-Biosensing, Center for Nano Science and Technology, Anhui Normal University, Wuhu 241000, PR China.
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13
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Sun C, Wang X, Yang X, Xing L, Zhao B, Yang X, Mao C. A label-free electrochemical aptasensor for sensitive thrombin detection in whole blood. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.05.100] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Fabrication of glucose biosensor for whole blood based on Au/hyperbranched polyester nanoparticles multilayers by antibiofouling and self-assembly technique. Anal Chim Acta 2013; 776:17-23. [DOI: 10.1016/j.aca.2013.03.032] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 03/07/2013] [Accepted: 03/12/2013] [Indexed: 11/20/2022]
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15
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Ringeard JM, Griesmar P, Caplain E, Michiel M, Serfaty S, Huerou JYL, Marinkova D, Yotova L. Design of poly(N-acryloylglycine) materials for incorporation of microorganisms. J Appl Polym Sci 2013. [DOI: 10.1002/app.39242] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jean-Marie Ringeard
- Laboratoire Systèmes et Applications des Technologies de l'Information et de l'Energie; Université de Cergy-Pontoise; ENS Cachan, UMR CNRS 8029, Cergy-Pontoise F-95000 France
| | - Pascal Griesmar
- Laboratoire Systèmes et Applications des Technologies de l'Information et de l'Energie; Université de Cergy-Pontoise; ENS Cachan, UMR CNRS 8029, Cergy-Pontoise F-95000 France
| | - Emmanuel Caplain
- Laboratoire Systèmes et Applications des Technologies de l'Information et de l'Energie; Université de Cergy-Pontoise; ENS Cachan, UMR CNRS 8029, Cergy-Pontoise F-95000 France
| | - Magalie Michiel
- Laboratoire Systèmes et Applications des Technologies de l'Information et de l'Energie; Université de Cergy-Pontoise; ENS Cachan, UMR CNRS 8029, Cergy-Pontoise F-95000 France
| | - Stéphane Serfaty
- Laboratoire Systèmes et Applications des Technologies de l'Information et de l'Energie; Université de Cergy-Pontoise; ENS Cachan, UMR CNRS 8029, Cergy-Pontoise F-95000 France
| | - Jean-Yves Le Huerou
- Laboratoire Systèmes et Applications des Technologies de l'Information et de l'Energie; Université de Cergy-Pontoise; ENS Cachan, UMR CNRS 8029, Cergy-Pontoise F-95000 France
| | - Desislava Marinkova
- Department of Biotechnology; University of Chemical Technology and Metallurgy; Sofia BG-1756 Bulgaria
| | - Lyubov Yotova
- Department of Biotechnology; University of Chemical Technology and Metallurgy; Sofia BG-1756 Bulgaria
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Du S, Wang X, Sun X, Li Q. Amperometric Immunosensor Based on L-Cysteine/Gold Colloidal Nanoparticles for Carbofuran Detection. ANAL LETT 2012. [DOI: 10.1080/00032719.2012.673105] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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17
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Saha K, Agasti SS, Kim C, Li X, Rotello VM. Gold nanoparticles in chemical and biological sensing. Chem Rev 2012; 112:2739-79. [PMID: 22295941 PMCID: PMC4102386 DOI: 10.1021/cr2001178] [Citation(s) in RCA: 2769] [Impact Index Per Article: 230.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Krishnendu Saha
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Sarit S. Agasti
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Chaekyu Kim
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Xiaoning Li
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003, USA
| | - Vincent M. Rotello
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, MA 01003, USA
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Sun X, Du S, Wang X, Zhao W, Li Q. A label-free electrochemical immunosensor for carbofuran detection based on a sol-gel entrapped antibody. SENSORS (BASEL, SWITZERLAND) 2011; 11:9520-31. [PMID: 22163709 PMCID: PMC3231269 DOI: 10.3390/s111009520] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Revised: 09/01/2011] [Accepted: 09/15/2011] [Indexed: 11/17/2022]
Abstract
In this study, an anti-carbofuran monoclonal antibody (Ab) was immobilized on the surface of a glassy carbon electrode (GCE) using silica sol-gel (SiSG) technology. Thus, a sensitive, label-free electrochemical immunosensor for the direct determination of carbofuran was developed. The electrochemical performance of immunoreaction of antigen with the anti-carbofuran monoclonal antibody was investigated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), in which phosphate buffer solution containing [Fe(CN)(6)](3-/4-) was used as the base solution for test. Because the complex formed by the immunoreaction hindered the diffusion of [Fe(CN)(6)](3-/4-) on the electrode surface, the redox peak current of the immunosensor in the CV obviously decreased with the increase of the carbofuran concentration. The pH of working solution, the concentration of Ab and the incubation time of carbofuran were studied to ensure the sensitivity and conductivity of the immunosensor. Under the optimal conditions, the linear range of the proposed immunosensor for the determination of carbofuran was from 1 ng/mL to 100 μg/mL and from 50 μg/mL to 200 μg/mL with a detection limit of 0.33 ng/mL (S/N = 3). The proposed immunosensor exhibited good high sensitivity and stability, and it was thus suitable for trace detection of carbofuran pesticide residues.
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Affiliation(s)
- Xia Sun
- School of Agriculture and Food Engineering, Shandong University of Technology, NO.12, Zhangzhou Road, Zibo 255049, Shandong Province, China; E-Mails: (X.S.); (S.D.); (W.Z.); (Q.L.)
| | - Shuyuan Du
- School of Agriculture and Food Engineering, Shandong University of Technology, NO.12, Zhangzhou Road, Zibo 255049, Shandong Province, China; E-Mails: (X.S.); (S.D.); (W.Z.); (Q.L.)
| | - Xiangyou Wang
- School of Agriculture and Food Engineering, Shandong University of Technology, NO.12, Zhangzhou Road, Zibo 255049, Shandong Province, China; E-Mails: (X.S.); (S.D.); (W.Z.); (Q.L.)
| | - Wenping Zhao
- School of Agriculture and Food Engineering, Shandong University of Technology, NO.12, Zhangzhou Road, Zibo 255049, Shandong Province, China; E-Mails: (X.S.); (S.D.); (W.Z.); (Q.L.)
| | - Qingqing Li
- School of Agriculture and Food Engineering, Shandong University of Technology, NO.12, Zhangzhou Road, Zibo 255049, Shandong Province, China; E-Mails: (X.S.); (S.D.); (W.Z.); (Q.L.)
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19
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Cao X, Ye Y, Liu S. Gold nanoparticle-based signal amplification for biosensing. Anal Biochem 2011; 417:1-16. [DOI: 10.1016/j.ab.2011.05.027] [Citation(s) in RCA: 301] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Revised: 05/09/2011] [Accepted: 05/17/2011] [Indexed: 12/11/2022]
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20
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Albarran L, López T, Quintana P, Chagoya V. Controlled release of IFC-305 encapsulated in silica nanoparticles for liver cancer synthesized by sol–gel. Colloids Surf A Physicochem Eng Asp 2011. [DOI: 10.1016/j.colsurfa.2011.03.042] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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21
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Safavi A, Banazadeh AR. Highly Efficient and Stable Palladium Nanoparticles Supported on an Ionic Liquid Silica SolGel Modified Electrode. ELECTROANAL 2011. [DOI: 10.1002/elan.201000767] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ansari AA, Alhoshan M, Alsalhi MS, Aldwayyan AS. Prospects of nanotechnology in clinical immunodiagnostics. SENSORS 2010; 10:6535-81. [PMID: 22163566 PMCID: PMC3231125 DOI: 10.3390/s100706535] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2010] [Revised: 06/12/2010] [Accepted: 06/30/2010] [Indexed: 01/08/2023]
Abstract
Nanostructured materials are promising compounds that offer new opportunities as sensing platforms for the detection of biomolecules. Having micrometer-scale length and nanometer-scale diameters, nanomaterials can be manipulated with current nanofabrication methods, as well as self-assembly techniques, to fabricate nanoscale bio-sensing devices. Nanostructured materials possess extraordinary physical, mechanical, electrical, thermal and multifunctional properties. Such unique properties advocate their use as biomimetic membranes to immobilize and modify biomolecules on the surface of nanoparticles. Alignment, uniform dispersion, selective growth and diameter control are general parameters which play critical roles in the successful integration of nanostructures for the fabrication of bioelectronic sensing devices. In this review, we focus on different types and aspects of nanomaterials, including their synthesis, properties, conjugation with biomolecules and their application in the construction of immunosensing devices. Some key results from each cited article are summarized by relating the concept and mechanism behind each sensor, experimental conditions and the behavior of the sensor under different conditions, etc. The variety of nanomaterial-based bioelectronic devices exhibiting novel functions proves the unique properties of nanomaterials in such sensing devices, which will surely continue to expand in the future. Such nanomaterial based devices are expected to have a major impact in clinical immunodiagnostics, environmental monitoring, security surveillance and for ensuring food safety.
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Affiliation(s)
- Anees A. Ansari
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh-11451, P.O. Box-2455, Saudi Arabia; E-Mails: (M.S.A.); (A.S.A.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +966-1-4676838; Fax: +966-1-0545797441
| | - Mansour Alhoshan
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh-11451, P.O. Box-2455, Saudi Arabia; E-Mails: (M.S.A.); (A.S.A.)
- Department of Chemical Engineering, College of Engineering, King Saud University, Riyadh-11451, P.O. Box-2454, Saudi Arabia, E-Mail:
| | - Mohamad S. Alsalhi
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh-11451, P.O. Box-2455, Saudi Arabia; E-Mails: (M.S.A.); (A.S.A.)
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh-11451, P.O. Box-2455, Saudi Arabia
| | - Abdullah S. Aldwayyan
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh-11451, P.O. Box-2455, Saudi Arabia; E-Mails: (M.S.A.); (A.S.A.)
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh-11451, P.O. Box-2455, Saudi Arabia
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A Novel Electrochemical Enzyme-linked Immunosensor Based on Tyramine Signal Amplification. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2010. [DOI: 10.3724/sp.j.1096.2010.00258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Qiu JD, Liang RP, Wang R, Fan LX, Chen YW, Xia XH. A label-free amperometric immunosensor based on biocompatible conductive redox chitosan-ferrocene/gold nanoparticles matrix. Biosens Bioelectron 2009; 25:852-7. [DOI: 10.1016/j.bios.2009.08.048] [Citation(s) in RCA: 101] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2009] [Revised: 08/25/2009] [Accepted: 08/28/2009] [Indexed: 10/20/2022]
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26
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Nanostructured conducting polymer based reagentless capacitive immunosensor. Biomed Microdevices 2009; 12:63-70. [DOI: 10.1007/s10544-009-9360-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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27
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Bojorge Ramírez N, Salgado AM, Valdman B. The evolution and developments of immunosensors for health and environmental monitoring: problems and perspectives. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2009. [DOI: 10.1590/s0104-66322009000200001] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
| | | | - B. Valdman
- Universidade Federal de Rio de Janeiro, Brasil
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28
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Meunier CF, Cutsem PV, Kwon YU, Su BL. Investigation of different silica precursors: Design of biocompatible silica gels with long term bio-activity of entrapped thylakoids toward artificial leaf. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b821769f] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Walcarius A, Collinson MM. Analytical chemistry with silica sol-gels: traditional routes to new materials for chemical analysis. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2009; 2:121-143. [PMID: 20636056 DOI: 10.1146/annurev-anchem-060908-155139] [Citation(s) in RCA: 84] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The versatility of sol-gel chemistry enables us to generate a wide range of silica and organosilica materials with controlled structure, composition, morphology and porosity. These materials' hosting and recognition properties, as well as their wide-open structures containing many easily accessible active sites, make them particularly attractive for analytical purposes. In this review, we summarize the importance of silica sol-gels in analytical chemistry by providing examples from the separation sciences, optical and electrochemical sensors, molecular imprinting, and biosensors. Recent work suggests that manipulating the structure and composition of these materials at different scales (from molecular to macromolecular states and/or from micro- to meso- and/or macroporous levels) promises to generate chemical and biochemical sensing devices with improved selectivity and sensitivity.
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Affiliation(s)
- Alain Walcarius
- Laboratoire de Chimie Physique et Microbiologie pour l'Environnement, CNRS-Nancy Université, F-54600 Villers-les-Nancy, France.
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31
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Abstract
We critically evaluate the usefulness of different nanostructures described as labels, nanoscaffolds or separation media in immunoassays and nucleic-acid hybridization assays. Many of the great number of publications describe only theoretical aspects of using these nanostructures or nanoparticles, but do not verify their applicability in the presence of potential interferents that can be present in the sample matrix. We attempt a systematic study of the advantages and the limitations of using these new reagents in bioassays, the different assay formats for individual and multiplexed detection, and the capability of these assays in analyzing real samples.
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Affiliation(s)
- A. Gómez-Hens
- Department of Analytical Chemistry, “Marie Curie Annex” Building, Campus of Rabanales, University of Córdoba, E-14071 Córdoba, Spain
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32
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Fabrication, characterization, and application of potentiometric immunosensor based on biocompatible and controllable three-dimensional porous chitosan membranes. J Colloid Interface Sci 2008; 320:125-31. [DOI: 10.1016/j.jcis.2008.01.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2007] [Revised: 12/26/2007] [Accepted: 01/03/2008] [Indexed: 11/18/2022]
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33
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Lin YH, Chen SH, Chuang YC, Lu YC, Shen TY, Chang CA, Lin CS. Disposable amperometric immunosensing strips fabricated by Au nanoparticles-modified screen-printed carbon electrodes for the detection of foodborne pathogen Escherichia coli O157:H7. Biosens Bioelectron 2008; 23:1832-7. [PMID: 18424027 DOI: 10.1016/j.bios.2008.02.030] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2007] [Revised: 02/12/2008] [Accepted: 02/25/2008] [Indexed: 11/28/2022]
Abstract
A disposable amperometric immunosensing strip was fabricated for rapid detection of Escherichia coli O157:H7. The method uses an indirect sandwich enzyme-linked immunoassay with double antibodies. Screen-printed carbon electrodes (SPCEs) were framed by commercial silver and carbon inks. For electrochemical characterization the carbon electrodes were coupled with the first E. coli O157:H7-specific antibody, E. coli O157:H7 intact cells and the second E. coli O157:H7-specific antibody conjugated with horseradish peroxidase (HRP). Hydrogen peroxide and ferrocenedicarboxylic acid (FeDC) were used as the substrate for HRP and mediator, respectively, at a potential +300 mV vs. counter/reference electrode. The response current (RC) of the immunosensing strips could be amplified significantly by 13-nm diameter Au nanoparticles (AuNPs) attached to the working electrode. The results show that the combined effects of AuNPs and FeDC enhanced RC by 13.1-fold. The SPCE immunosensing strips were used to detect E. coli O157:H7 specifically. Concentrations of E. coli O157:H7 from 10(2) to 10(7)CFU/ml could be detected. The detection limit was approximately 6CFU/strip in PBS buffer and 50CFU/strip in milk. The SPCE modified with AuNPs and FeDC has the potential for further applications and provides the basis for incorporating the method into an integrated system for rapid pathogen detection.
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Affiliation(s)
- Yueh-Hui Lin
- Department of Biological Science and Technology, National Chiao Tung University, Hsinchu 30068, Taiwan
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34
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Guo C, Boullanger P, Jiang L, Liu T. One-step immobilization of alkanethiol/glycolipid vesicles onto gold electrode: Amperometric detection of Concanavalin A. Colloids Surf B Biointerfaces 2008; 62:146-50. [DOI: 10.1016/j.colsurfb.2007.09.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2007] [Revised: 07/10/2007] [Accepted: 09/11/2007] [Indexed: 11/25/2022]
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35
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Beganskiene A, Raudonis R, Jokhadar SZ, Batista U, Kareiva A. Modified sol-gel coatings for biotechnological applications. ACTA ACUST UNITED AC 2007. [DOI: 10.1088/1742-6596/93/1/012050] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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36
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Thenmozhi K, Narayanan SS. Surface renewable sol–gel composite electrode derived from 3-aminopropyl trimethoxy silane with covalently immobilized thionin. Biosens Bioelectron 2007; 23:606-12. [PMID: 17766102 DOI: 10.1016/j.bios.2007.06.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2007] [Revised: 05/22/2007] [Accepted: 06/19/2007] [Indexed: 10/23/2022]
Abstract
Sol-gel technique has been used for the covalent immobilization of the water-soluble mediator, thionin to construct a bulk modified, leak free composite electrode. This renewable composite electrode provides stable immobilization matrix for thionin via glutaraldehyde crosslinking. In the electrode composition the sol-gel precursor 3-aminopropyltrimethoxy silane serves as the host for immobilization of thionin, thereby preventing its leakage. An additional precursor methyl trimethoxy silane endows hydrophobicity and limits the wetting section of the modified electrode. Cyclic voltammetric characterization of the modified electrode in the potential range of 0.2 to -0.6 V exhibited stable redox peaks with a formal potential of -0.273 V, corresponding to immobilized thionin. This chemically modified electrode exhibits good electrocatalytic activity for the reduction of H(2)O(2) at a lower potential of -0.35 V. The reduction current of the modified electrode increases linearly in the range of 3.44 x 10(-6)M to 3.07 x 10(-3)M H(2)O(2) with a detection limit of 1.38 x 10(-6)M. The stable and quick response (5s) during chronoamperometry shows the potential application of the modified electrode for flow system analysis. The low potential operation (-0.35 V) favoured selective determination of H(2)O(2). The composite electrode exhibits distinct advantages of polishing in the event of surface fouling as well as simple preparation, good chemical and mechanical stability, economical and remarkable long-term stability (more than 1 year). The applicability of the present sensor for H(2)O(2) determination proposes a method for the detection of other biologically significant analytes.
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Affiliation(s)
- K Thenmozhi
- Department of Analytical Chemistry, University of Madras, Guindy Campus, Chennai, India
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37
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Electrocatalytic Reduction of Nitrite Ion on a Toluidine Blue Sol-Gel Thin Film Electrode Derived from 3-Aminopropyl Trimethoxy Silane. ELECTROANAL 2007. [DOI: 10.1002/elan.200703995] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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38
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Brewer M, Zhang T, Dong W, Rutherford M, Tian ZR. Future approaches of nanomedicine in clinical science. Med Clin North Am 2007; 91:963-1016. [PMID: 17826113 DOI: 10.1016/j.mcna.2007.05.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Burgeoning applications of nanotechnology are altering practices in traditional medicine. Promoted by the National Institutes of Health, nanomedicinal research is advancing technologies and revolutionizing strategies in clinical science by providing easy access to innovative nanodevices and nanosystems based on the rational design and precise integration of functional nanomaterials. Many long-standing challenges in clinical science could be met through advancement and revolutionization. Nanomedicinal diagnostics could acquire critical information regarding the status of diseased tissues and organs quickly and inexpensively with minimal sampling size and invasion. New strategies in therapeutic and regenerative nanomedicines will enable clinicians to take actions in a timely fashion and patient-friendly manner.
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Affiliation(s)
- Mary Brewer
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR 72701, USA
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39
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Carralero V, González-Cortés A, Yáñez-Sedeño P, Pingarrón JM. Nanostructured progesterone immunosensor using a tyrosinase–colloidal gold–graphite–Teflon biosensor as amperometric transducer. Anal Chim Acta 2007; 596:86-91. [PMID: 17616244 DOI: 10.1016/j.aca.2007.05.046] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2007] [Revised: 05/23/2007] [Accepted: 05/24/2007] [Indexed: 12/29/2022]
Abstract
A novel progesterone immunosensor using a colloidal gold-graphite-Teflon-tyrosinase composite biosensor as amperometric transducer is reported. A sequential competitive configuration between the analyte and progesterone labelled with alkaline phosphatase (AP) was used. Phenyl phosphate was employed as the AP-substrate and the enzyme reaction product, phenol, was oxidized by tyrosinase to o-quinone, which is subsequently reduced at -0.1 V at the biocomposite electrode. Variables such as the concentration of phenyl phosphate, the amount of antibody attached to the electrode surface, immersion time in a 2% BSA solution, working pH and incubation times in progesterone and AP conjugate were optimized. A linear calibration graph for progesterone was obtained between 0 and 40 ng mL(-1) with a slope value of -82.3 nA ng(-1) mL, and a detection limit of 0.43 ng mL(-1). The time needed to reach the steady-state current from the addition of phenyl phosphate was 30-40 s. These analytical characteristics improve substantially those reported for other progesterone immunosensors. A lifetime of 14 days with no need to apply any regeneration procedure was also achieved. The usefulness of the immunosensor was evaluated by determining progesterone in milk samples spiked with the analyte at 5.0 and 1.5 ng mL(-1) concentration levels. Following a very simple procedure, involving only sample dilution, mean recoveries (n=7) of 98+/-3% and 99+/-3%, respectively, were obtained.
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Affiliation(s)
- Verónica Carralero
- Department of Analytical Chemistry, Faculty of Chemistry, University Complutense of Madrid, 28040 Madrid, Spain
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40
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Carralero V, González-Cortés A, Yáñez-Sedeño P, Pingarrón J. Development of a Progesterone Immunosensor Based on a Colloidal Gold-Graphite-Teflon Composite Electrode. ELECTROANAL 2007. [DOI: 10.1002/elan.200603794] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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41
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An H, Yuan R, Tang D, Chai Y, Li N. Dual-Amplification of Antigen–Antibody Interactions via Backfilling Gold Nanoparticles on (3-Mercaptopropyl) Trimethoxysilane Sol-Gel Functionalized Interface. ELECTROANAL 2007. [DOI: 10.1002/elan.200603752] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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42
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Sun L, Song Y, Wei G, Wang L, Guo C, Sun Y, Li Z. Self-assembled Gold Nanoparticle Chains in Presence of Silver Ions. CHEM LETT 2007. [DOI: 10.1246/cl.2007.142] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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43
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Alvarez GS, Desimone MF, Diaz LE. Immobilization of bacteria in silica matrices using citric acid in the sol–gel process. Appl Microbiol Biotechnol 2007; 73:1059-64. [PMID: 16977464 DOI: 10.1007/s00253-006-0580-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2006] [Revised: 07/07/2006] [Accepted: 07/10/2006] [Indexed: 11/28/2022]
Abstract
The aim of this work was to use citric acid in the sol-gel process to generate an inorganic polymer that allows bacterial survival for long periods of time and to study the influence of different storage temperatures. We compared gram-negative Escherichia coli and gram-positive Staphylococcus aureus, immobilized and preserved at different storage temperatures in silica matrices prepared by the method proposed. Immobilized E. coli and S. aureus in silica matrices were stored in sealed tubes at 20, 4, -20, and -70 degrees C for 4 months during which the number of viable cells was analyzed. Results show that the immobilization in silica matrices using citric acid, to neutralize the alkalinity of the silica precursors, makes the technique not only biocompatible but also easier to perform since polymerization does not occur immediately as it does when hydrochloric acid is utilized.
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Affiliation(s)
- Gisela S Alvarez
- Cátedra de Química Analítica Instrumental, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956 Piso 3, 1113, Ciudad Autónoma de Buenos Aires, Argentina
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44
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Abstract
This minireview looks at the latest trends in the use of nanoparticles (NPs) in electrochemical biosensing systems. It includes electrochemical characterization of NPs for use as labels in affinity biosensors and other applications. DNA analysis involving NPs is one of the most important topics of current research in bionanotechnology. The advantages of the use of NPs in designing novel electrochemical sensors for DNA analysis are reviewed. Electrochemical NPs can also be used in designing immunoassays, offering the possibility of easy, low cost and simultaneous detection of several proteins. Research into NP applications in electrochemical analysis is in its infancy. Several aspects related to sensitivity as well integration of all the assay steps into a single one need to be improved.
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Affiliation(s)
- Arben Merkoçi
- Institut Català de Nanotecnologia and Universitat Autònoma de Barcelona, Spain.
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45
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Wang SF, Tan YM. A novel amperometric immunosensor based on Fe3O4 magnetic nanoparticles/chitosan composite film for determination of ferritin. Anal Bioanal Chem 2006; 387:703-8. [PMID: 17146621 DOI: 10.1007/s00216-006-0976-2] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2006] [Revised: 10/29/2006] [Accepted: 10/31/2006] [Indexed: 11/25/2022]
Abstract
A novel amperometric immunosensor was developed by immobilizing ferritin antibody (FeAb) on the surface of Fe(3)O(4) magnetic nanoparticles/chitosan composite film modified glassy carbon electrode (GCE). This material combined the advantages of inorganic Fe(3)O(4) nanoparticles with the organic polymer chitosan. The stepwise assembly procedure of the immunosensor was characterized by means of differential pulse voltammetry (DPV) and ac impedance. The K(3)Fe(CN)(6)/K(4)Fe(CN)(6) was used as a marker to probe the interface and to determinate ferritin. The factors that could influence the performance of the resulting immunosensor were studied in detail. After the immunosensor was incubated with ferritin for 32 min at 35 degrees C, the DPV current decreased linearly with the logarithm of ferritin concentration in the range from 20 to 500 ng mL(-1) with a correlation coefficient of 0.995 and a detection limit of 7.0 ng mL(-1). This immunosensor was used to analyze ferritin in human serum samples. The analytical results showed that the developed immunoassay was comparable with the radioimmunoassay (RIA), and the studied immunosensor exhibited good accuracy, high sensitivity, and long-term stability for 3 weeks, which implies a promising alternative approach for detecting ferritin in clinical diagnosis.
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Affiliation(s)
- Sheng-Fu Wang
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, School of Chemistry and Chemical Engineering, Hubei University, Wuhan, 430062, China.
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46
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Thenmozhi K, Sriman Narayanan S. Amperometric hydrogen peroxide sensor based on a sol-gel-derived ceramic carbon composite electrode with toluidine blue covalently immobilized using 3-aminopropyltrimethoxysilane. Anal Bioanal Chem 2006; 387:1075-82. [PMID: 17131107 DOI: 10.1007/s00216-006-0992-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2006] [Revised: 10/27/2006] [Accepted: 11/03/2006] [Indexed: 10/23/2022]
Abstract
A carbon composite amperometric hydrogen peroxide sensor has been developed using a sol-gel technique. Toluidine blue (TB), which acts as the redox mediator, was covalently immobilized via glutaraldehyde crosslinking with an organically modified silane, namely 3-aminopropyltrimethoxysilane (APTMOS). Methyltrimethoxysilane (MTMOS) was used as the additional monomer; this controls the hydrophobicity of the electrode surface, thus limiting the wettability. The immobilization of TB within the sol-gel matrix was confirmed with FTIR studies. The sol-gel mixture containing TB immobilized in APTMOS and MTMOS was mixed with graphite powder in order to prepare the carbon composite electrode. The electrode was characterized using voltammetric techniques and its electrocatalytic activity for the reduction of hydrogen peroxide was also studied. The carbon composite electrode has the advantage of sensing H(2)O(2) at a lower potential and with a higher sensitivity, and interferences due to ascorbic acid, uric acid and acetaminophen were greatly minimized. The linear range for the determination of H(2)O(2) extends from 5.37 x 10(-6) to 6.15 x 10(-3) M, with a correlation coefficient of 0.9981. The detection limit was found to be 2.15 x 10(-6) M. The covalent immobilization of TB effectively prevents the leakage of the water-soluble mediator during measurements. The modified electrode, aside from electrocatalyzing the reduction of H(2)O(2), exhibits distinct advantages in terms of surface renewal in the event of surface fouling, as well as simple preparation, good chemical and mechanical stability, and good reproducibility.
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Affiliation(s)
- K Thenmozhi
- Department of Analytical Chemistry, University of Madras, Guindy Campus, Chennai, 600 025, India
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47
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Chen J, Yan F, Tan F, Ju H. Gold Nanoparticles Doped Three-Dimensional Sol-gel Matrix for Amperometric Human Chorionic Gonadotrophin Immunosensor. ELECTROANAL 2006. [DOI: 10.1002/elan.200603575] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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48
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Xu Y, Xia S, Bian C, Chen S. A micro amperometric immunosensor for detection of human immunoglobulin. ACTA ACUST UNITED AC 2006. [DOI: 10.1007/s11432-006-0397-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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49
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Welch CM, Compton RG. The use of nanoparticles in electroanalysis: a review. Anal Bioanal Chem 2006; 384:601-19. [PMID: 16402180 DOI: 10.1007/s00216-005-0230-3] [Citation(s) in RCA: 433] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2005] [Revised: 11/04/2005] [Accepted: 11/09/2005] [Indexed: 11/25/2022]
Abstract
Nanoparticles can display four unique advantages over macroelectrodes when used for electroanalysis: enhancement of mass transport, catalysis, high effective surface area and control over electrode microenvironment. Therefore, much work has been carried out into their formation, characterisation and employment for the detection of many electroactive species. This paper aims to give an overview of the investigations carried out in this field. Particular attention is paid to examples of the advantages and disadvantages nanoparticles show when compared to macroelectrodes and the advantages of one nanoparticle modification over another. Most work has been carried out using gold, silver and platinum metals. However, iron, nickel and copper are also reviewed with some examples of other metals such as iridium, ruthenium, cobalt, chromium and palladium. Some bimetallic nanoparticle modifications are also mentioned because they can cause unique catalysis through the mixing of the properties of both metals.
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Affiliation(s)
- Christine M Welch
- Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QZ, UK
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50
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Avnir D, Coradin T, Lev O, Livage J. Recent bio-applications of sol–gel materials. ACTA ACUST UNITED AC 2006. [DOI: 10.1039/b512706h] [Citation(s) in RCA: 629] [Impact Index Per Article: 34.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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