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Yang X, Guo Q, Yang J, Chen S, Hu F, Hu Y, Lin H. Synergistic effects of layer-by-layer films for highly selective and sensitive electrochemical detection of trans-resveratrol. Food Chem 2020; 338:127851. [PMID: 32836002 DOI: 10.1016/j.foodchem.2020.127851] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 07/21/2020] [Accepted: 08/14/2020] [Indexed: 10/23/2022]
Abstract
Trans-resveratrol (TRA) possesses a variety of pharmacological activities, making important to explore simple, inexpensive, and reliable analytical methods for identification and quantification of it. We report on the synergistic effects originated from layer-by-layer films of graphene (Gr)-gold nanoparticles (Au) and molecularly imprinted polymers (MIPs) modified glassy carbon electrode (GCE) for electrochemical detection of TRA. To construct the TRA electrochemical sensor (GCE|Gr-Au/MIPs), the films of Gr-Au, MIPs were step by step formed onto GCE via in-situ and controllable electrodeposition and polymerization processes. The compositions, morphologies, and electrochemical properties of obtained films were investigated by various methods. Under the optimized experimental conditions, the electrochemical sensor showed superior performance toward selective and sensitive determination of TRA with K3[Fe(CN)6] as electrochemical signal probe. The electrochemical sensor was applied to determine TRA in real samples with good accuracy and recovery, verifying the broad and practical application prospects for foods and medicines analysis.
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Affiliation(s)
- Xin Yang
- Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol Fiber Material, Huaihua Key Laboratory for Preparation of Ceramics Materials and Devices, Huaihua University, Huaihua 418000, PR China; Key Laboratory of Research and Utilization of Ethnomedicinal Plant Resources of Hunan Province, Key Laboratory of Hunan Higher Education for Western Hunan Medicinal Plant and Ethnobotany, Huaihua University, Huaihua 418000, PR China
| | - Qianjuan Guo
- Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol Fiber Material, Huaihua Key Laboratory for Preparation of Ceramics Materials and Devices, Huaihua University, Huaihua 418000, PR China
| | - Jinhua Yang
- Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol Fiber Material, Huaihua Key Laboratory for Preparation of Ceramics Materials and Devices, Huaihua University, Huaihua 418000, PR China
| | - Shuli Chen
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, PR China
| | - Feilong Hu
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, PR China.
| | - Yangjian Hu
- Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol Fiber Material, Huaihua Key Laboratory for Preparation of Ceramics Materials and Devices, Huaihua University, Huaihua 418000, PR China
| | - Hongwei Lin
- Hunan Engineering Laboratory for Preparation Technology of Polyvinyl Alcohol Fiber Material, Huaihua Key Laboratory for Preparation of Ceramics Materials and Devices, Huaihua University, Huaihua 418000, PR China.
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Vaneckova T, Bezdekova J, Han G, Adam V, Vaculovicova M. Application of molecularly imprinted polymers as artificial receptors for imaging. Acta Biomater 2020; 101:444-458. [PMID: 31706042 DOI: 10.1016/j.actbio.2019.11.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 10/21/2019] [Accepted: 11/04/2019] [Indexed: 12/19/2022]
Abstract
Medical diagnostics aims at specific localization of molecular targets as well as detection of abnormalities associated with numerous diseases. Molecularly imprinted polymers (MIPs) represent an approach of creating a synthetic material exhibiting selective recognition properties toward the desired template. The fabricated target-specific MIPs are usually well reproducible, economically efficient, and stable under critical conditions as compared to routinely used biorecognition elements such as fluorescent proteins, antibodies, enzymes, or aptamers and can even be created to those targets for which no antibodies are available. In this review, we summarize the methods of polymer fabrication. Further, we provide key for selection of the core material with imaging function depending on the imaging modality used. Finally, MIP-based imaging applications are highlighted and presented in a comprehensive form from different aspects. STATEMENT OF SIGNIFICANCE: In this review, we summarize the methods of polymer fabrication. Key applications of Molecularly imprinted polymers (MIPs) in imaging are highlighted and discussed with regard to the selection of the core material for imaging as well as commonly used imaging targets. MIPs represent an approach of creating a synthetic material exhibiting selective recognition properties toward the desired template. The fabricated target-specific MIPs are usually well reproducible, economically efficient, and stable under critical conditions as compared to routinely used biorecognition elements, e.g., antibodies, fluorescent proteins, enzymes, or aptamers, and can even be created to those targets for which no antibodies are available.
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Hosnedlova B, Sochor J, Baron M, Bjørklund G, Kizek R. Application of nanotechnology based-biosensors in analysis of wine compounds and control of wine quality and safety: A critical review. Crit Rev Food Sci Nutr 2019; 60:3271-3289. [PMID: 31809581 DOI: 10.1080/10408398.2019.1682965] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Nanotechnology is one of the most promising future technologies for the food industry. Some of its applications have already been introduced in analytical techniques and food packaging technologies. This review summarizes existing knowledge about the implementation of nanotechnology in wine laboratory procedures. The focus is mainly on recent advancements in the design and development of nanomaterial-based sensors for wine compounds analysis and assessing wine safety. Nanotechnological approaches could be useful in the wine production process, to simplify wine analysis methods, and to improve the quality and safety of the final product.
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Affiliation(s)
- Bozena Hosnedlova
- Faculty of Horticulture, Department of Viticulture and Enology, Mendel University in Brno, Lednice, Czech Republic.,CONEM Metallomics Nanomedicine Research Group (CMNRG), Brno, Czech Republic
| | - Jiri Sochor
- Faculty of Horticulture, Department of Viticulture and Enology, Mendel University in Brno, Lednice, Czech Republic
| | - Mojmir Baron
- Faculty of Horticulture, Department of Viticulture and Enology, Mendel University in Brno, Lednice, Czech Republic
| | - Geir Bjørklund
- Council for Nutritional and Environmental Medicine (CONEM), Mo i Rana, Norway
| | - Rene Kizek
- CONEM Metallomics Nanomedicine Research Group (CMNRG), Brno, Czech Republic.,Faculty of Pharmacy, Department of Human Pharmacology and Toxicology, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
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4
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Preparation of molecularly imprinted polymers and application in a biomimetic biotin-avidin-ELISA for the detection of bovine serum albumin. Talanta 2019; 198:55-62. [DOI: 10.1016/j.talanta.2019.01.088] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 01/16/2019] [Accepted: 01/24/2019] [Indexed: 11/18/2022]
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5
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Yan Y, Shi P, Song W, Bi S. Chemiluminescence and Bioluminescence Imaging for Biosensing and Therapy: In Vitro and In Vivo Perspectives. Theranostics 2019; 9:4047-4065. [PMID: 31281531 PMCID: PMC6592176 DOI: 10.7150/thno.33228] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 04/25/2019] [Indexed: 12/11/2022] Open
Abstract
Chemiluminescence (CL) and bioluminescence (BL) imaging technologies, which require no external light source so as to avoid the photobleaching, background interference and autoluminescence, have become powerful tools in biochemical analysis and biomedical science with the development of advanced imaging equipment. CL imaging technology has been widely applied to high-throughput detection of a variety of analytes because of its high sensitivity, high efficiency and high signal-to-noise ratio (SNR). Using luciferase and fluorescent proteins as reporters, various BL imaging systems have been developed innovatively for real-time monitoring of diverse molecules in vivo based on the reaction between luciferin and the substrate. Meanwhile, the kinetics of protein interactions even in deep tissues has been studied by BL imaging. In this review, we summarize in vitro and in vivo applications of CL and BL imaging for biosensing and therapy. We first focus on in vitro CL imaging from the view of improving the sensitivity. Then, in vivo CL applications in cells and tissues based on different CL systems are demonstrated. Subsequently, the recent in vitro and in vivo applications of BL imaging are summarized. Finally, we provide the insight into the development trends and future perspectives of CL and BL imaging technologies.
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Liang C, Boss PK, Jeffery DW. Extraction Properties of New Polymeric Sorbents Applied to Wine. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:10086-10096. [PMID: 30222344 DOI: 10.1021/acs.jafc.8b04641] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Polymeric sorbents are frequently used in wine, either as solid phase extraction materials for isolation of analytes or as sorptive materials for removal of undesirable compounds (amelioration). Six new polymeric sorbents were produced thermally or in a microwave from various ratios of methacrylic acid, acrylic acid, and 4-vinylbenzoic acid as hydrophilic monomers, together with ethylene glycol dimethacrylate as cross-linker, using different porogen solvents. The relationship between physicochemical properties (pore size, surface area, and polarity) of the sorbents and their sorption properties for compounds in wine was investigated and compared to four commercially available sorbents. With some similarities to their commercial counterparts depending on hydrophobic and hydrophilic characteristics, the six new sorbents showed specificity toward different groups of compounds (e.g., volatiles and phenolics) and could be applied for targeted purposes. The results provide insight into the selection and utilization of new polymeric materials for extraction of components from wine.
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Affiliation(s)
- Chen Liang
- The Australian Research Council Training Centre for Innovative Wine Production and Department of Wine and Food Science , The University of Adelaide , Waite Campus, PMB 1, Glen Osmond , SA 5064 , Australia
| | - Paul K Boss
- CSIRO Agriculture and Food , PMB 2, Glen Osmond , SA 5064 , Australia
| | - David W Jeffery
- The Australian Research Council Training Centre for Innovative Wine Production and Department of Wine and Food Science , The University of Adelaide , Waite Campus, PMB 1, Glen Osmond , SA 5064 , Australia
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Mora-Granados M, González-Gómez D, Gallego-Picó A. Feasibility of the determination of three flavan-3-ols metabolites in urine samples via parallel factor analysis of fluorescence emission matrices. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.08.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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Schauperl M, Lewis DW. Probing the Structural and Binding Mechanism Heterogeneity of Molecularly Imprinted Polymers. J Phys Chem B 2015; 119:563-71. [DOI: 10.1021/jp506157x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Michael Schauperl
- Department
of Chemistry, University College London, 20 Gordon St, London WC1H 0AJ, United Kingdom
| | - Dewi W. Lewis
- Department
of Chemistry, University College London, 20 Gordon St, London WC1H 0AJ, United Kingdom
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Whitcombe MJ, Kirsch N, Nicholls IA. Molecular imprinting science and technology: a survey of the literature for the years 2004-2011. J Mol Recognit 2014; 27:297-401. [PMID: 24700625 DOI: 10.1002/jmr.2347] [Citation(s) in RCA: 275] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 10/28/2013] [Accepted: 12/01/2013] [Indexed: 12/11/2022]
Abstract
Herein, we present a survey of the literature covering the development of molecular imprinting science and technology over the years 2004-2011. In total, 3779 references to the original papers, reviews, edited volumes and monographs from this period are included, along with recently identified uncited materials from prior to 2004, which were omitted in the first instalment of this series covering the years 1930-2003. In the presentation of the assembled references, a section presenting reviews and monographs covering the area is followed by sections describing fundamental aspects of molecular imprinting including the development of novel polymer formats. Thereafter, literature describing efforts to apply these polymeric materials to a range of application areas is presented. Current trends and areas of rapid development are discussed.
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Ma G, Chen L. Development of magnetic molecularly imprinted polymers based on carbon nanotubes - application for trace analysis of pyrethroids in fruit matrices. J Chromatogr A 2014; 1329:1-9. [PMID: 24418237 DOI: 10.1016/j.chroma.2013.12.079] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 12/26/2013] [Accepted: 12/29/2013] [Indexed: 11/25/2022]
Abstract
The sensitive and efficient magnetic molecularly imprinted polymers (MMIPs) were successfully synthesized using carbon nanotubes as matrix and Fe3O4 particles as magnetic ingredient. Tetraethyl orthosilicate was used as modification material of the carbon nanotubes. Cyhalothrin, methacrylic acid and ethylene glycol dimethacrylate were used as template molecule, functional monomer and cross-linker, respectively. Azo-isobutyronitrile and polyvinylpyrrolidone were used as initiator and dispersant, respectively. The MMIPs were used for the separation of pyrethroids including beta-cyfluthrin, cyhalothrin, cyphenothrin and permethrin in fruit samples followed by high performance liquid chromatography analysis. The polymers were characterized with Fourier transform infrared spectrometry, Brunauer-Emmett-Teller method, transmission electron microscopy and a physical property measurement system. The isothermal absorption experiment, kinetics absorption experiment and selectivity of MMIPs were studied in detail. Scatchard analysis revealed that two kinds of different binding sites existed in MMIPs. The maximum adsorption capacities of two binding sites were 65.21 and 189.83mgg(-1), and dissociation constants were 7.11 and 30.40μgmL(-1), respectively. The kinetic property of MMIPs was well fitted to the second-order equation. The selectivity experiment indicated that MMIPs had higher selectivity toward cyhalothrin and its structural analogs than reference compound. The feasibility of detecting pyrethroids from real samples was testified in spiked fruit samples with different concentrations (0.025, 0.25 and 2.5mgkg(-1)). The LODs of beta-cyfluthrin, cyhalothrin, cyphenothrin and permethrin were 0.0072, 0.0035, 0.0062 and 0.0068mgkg(-1), respectively. Precisions of intra-day and inter-day ranging from 2.6% to 4.3% and 4.2% to 5.6% were obtained, respectively. This method was applied to determine pyrethroids in different fruit samples including apple, pear, orange, grape and peach, and satisfied recoveries (82.4-101.7%) were obtained.
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Affiliation(s)
- Guifu Ma
- Department of Chemistry, College of Science, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China
| | - Ligang Chen
- Department of Chemistry, College of Science, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China.
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Hashim SN, Schwarz LJ, Boysen RI, Yang Y, Danylec B, Hearn MT. Rapid solid-phase extraction and analysis of resveratrol and other polyphenols in red wine. J Chromatogr A 2013; 1313:284-90. [DOI: 10.1016/j.chroma.2013.06.052] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Revised: 06/12/2013] [Accepted: 06/19/2013] [Indexed: 12/18/2022]
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12
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Fu Y, Lin Y, Chen T, Wang L. Study on the polyfurfural film modified glassy carbon electrode and its application in polyphenols determination. J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2012.09.040] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Nagata T, Goji S, Akamatsu K, Nawafune H, Matsui J. Monodispersed Molecularly Imprinted Polymer Beads with Enhanced Atrazine Retention Ability Synthesized with Polymeric Diluents. ANAL LETT 2012. [DOI: 10.1080/00032719.2012.670786] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Lu F, Li H, Sun M, Fan L, Qiu H, Li X, Luo C. Flow injection chemiluminescence sensor based on core–shell magnetic molecularly imprinted nanoparticles for determination of sulfadiazine. Anal Chim Acta 2012; 718:84-91. [DOI: 10.1016/j.aca.2011.12.054] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Revised: 12/16/2011] [Accepted: 12/19/2011] [Indexed: 11/24/2022]
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Zhao C, Jin GP, Chen LL, Li Y, Yu B. Preparation of molecular imprinted film based on chitosan/nafion/nano-silver/poly quercetin for clenbuterol sensing. Food Chem 2011; 129:595-600. [DOI: 10.1016/j.foodchem.2011.04.072] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2010] [Revised: 01/11/2011] [Accepted: 04/22/2011] [Indexed: 11/27/2022]
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Kinetic-spectrometric three-dimensional chemiluminescence as an effective analytical tool. Application to the determination of benzo(a)pyrene. Anal Chim Acta 2011; 691:76-82. [PMID: 21458634 DOI: 10.1016/j.aca.2011.02.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Revised: 02/17/2011] [Accepted: 02/17/2011] [Indexed: 11/22/2022]
Abstract
Kinetic and spectroscopic methods were used in combination in this work to develop a new analytical tool for use in chemiluminescence detection processes. Specifically, time-resolved chemiluminescence was used jointly with a stopped-flow assembly in order to monitor the chemiluminescence produced in the oxidation of bis(2,4-dinitrophenyl)oxalate (DNPO) by hydrogen peroxide in the presence of a polycyclic aromatic hydrocarbon. Recording of successive two-dimensional spectra during the emission process and treating the acquired spectral data with dedicated software allows the obtainment of three-dimensional chemiluminescence spectra, a result of the joint use of two analytical techniques. Thus, using a flow cell specifically designed for direct coupling to the charge-coupled device (CCD) detector increases the emission intensity without the need for fibre optics. Also, using dedicated software to process the acquired two-dimensional spectra affords a comprehensive kinetic and spectroscopic characterization of the chemiluminescence signal via the three-dimensional spectrum previously obtained. The analytical potential of this new tool was assessed by application to the chemiluminescent reaction between a peroxyoxalate and an oxidant (hydrogen peroxide); the reaction is induced by benzo(a)pyrene, which was used to determine this polycyclic aromatic hydrocarbon in an organic solvent. A linear calibration graph was obtained between 0.5 and 20 mg L(-1). The limit of detection found to be 3.97 μg L(-1) and a relative standard error of 0.64% and a relative standard deviation of 1.87% were obtained. The results reached testify to the usefulness of the proposed analytical tool for simple determinations and its potential for the resolution of complex mixtures or determinations in complex matrices.
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ZHANG ML, ZHANG ZH, LIU L, ZHANG LJ, NIE LH. Preparation and Evaluation of Core-Shell Resveratrol Molecularly Imprinted Microspheres. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2010. [DOI: 10.3724/sp.j.1096.2010.00129] [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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Van Dorst B, Mehta J, Bekaert K, Rouah-Martin E, De Coen W, Dubruel P, Blust R, Robbens J. Recent advances in recognition elements of food and environmental biosensors: a review. Biosens Bioelectron 2010; 26:1178-94. [PMID: 20729060 DOI: 10.1016/j.bios.2010.07.033] [Citation(s) in RCA: 158] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 07/08/2010] [Accepted: 07/11/2010] [Indexed: 12/12/2022]
Abstract
A sensitive monitoring of contaminants in food and environment, such as chemical compounds, toxins and pathogens, is essential to assess and avoid risks for both, human and environmental health. To accomplish this, there is a high need for sensitive, robust and cost-effective biosensors that make real time and in situ monitoring possible. Due to their high sensitivity, selectivity and versatility, affinity-based biosensors are interesting for monitoring contaminants in food and environment. Antibodies have long been the most popular affinity-based recognition elements, however recently a lot of research effort has been dedicated to the development of novel recognition elements with improved characteristics, like specificity, stability and cost-efficiency. This review discusses three of these innovative affinity-based recognition elements, namely, phages, nucleic acids and molecular imprinted polymers and gives an overview of biosensors for food and environmental applications where these novel affinity-based recognition elements are applied.
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Affiliation(s)
- Bieke Van Dorst
- University of Antwerp, Department of Biology, Laboratory of Ecophysiology, Biochemistry and Toxicology, Groenenborgerlaan 171, 2020 Antwerp, Belgium.
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Chang P, Zhang Z, Yang C. Molecularly imprinted polymer-based chemiluminescence array sensor for the detection of proline. Anal Chim Acta 2010; 666:70-5. [DOI: 10.1016/j.aca.2010.03.031] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2010] [Revised: 03/11/2010] [Accepted: 03/15/2010] [Indexed: 11/24/2022]
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Yu J, Zhang C, Dai P, Ge S. Highly selective molecular recognition and high throughput detection of melamine based on molecularly imprinted sol-gel film. Anal Chim Acta 2009; 651:209-14. [PMID: 19782813 DOI: 10.1016/j.aca.2009.08.018] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2009] [Revised: 07/28/2009] [Accepted: 08/16/2009] [Indexed: 10/20/2022]
Abstract
Multimode reader has been generally applied in immunoassay, and in the proposed paper, the 96 well micro-plate was modified with molecularly imprinted melamine sol-gel film, based on which the highly selective and high throughput detection of melamine was achieved. Melamine was imprinted into silica sol-gel films directly using phenyltrimethoxysilane and methyltrimethoxysilane as functionalized organosilicon precursors. The binding characteristic of the imprinted film to melamine was evaluated by equilibrium binding experiments and the morphology was studied by scanning electronic microscope (SEM). Scatchard analysis was carried out to estimate the binding parameters of the imprinted film. The proposed method exhibited excellent selectivity because of specific recognition of MM by molecularly imprinted film. Under the optimum conditions, the chemiluminescence (CL) intensity had a linear relationship against the concentration of melamine over the range of 0.1-50 microg mL(-1) with a lower detection limit of 0.02 microg mL(-1).
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Affiliation(s)
- Jinghua Yu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
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Molecularly imprinted polymer based on chemiluminescence imaging for the chiral recognition of dansyl-phenylalanine. Anal Bioanal Chem 2008; 390:1431-6. [DOI: 10.1007/s00216-007-1795-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2007] [Accepted: 12/05/2007] [Indexed: 10/22/2022]
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