51
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Bates F, Busato M, Piletska E, Whitcombe MJ, Karim K, Guerreiro A, del Valle M, Giorgetti A, Piletsky S. Computational design of molecularly imprinted polymer for direct detection of melamine in milk. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2017.1287197] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ferdia Bates
- Sensors and Biosensors Group, Department of Chemistry, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | - Mirko Busato
- Department of Biotechnology, University of Verona, Verona, Italy
| | - Elena Piletska
- Chemical Biology, Department of Chemistry, University of Leicester, Leicester, UK
| | - Michael J. Whitcombe
- Chemical Biology, Department of Chemistry, University of Leicester, Leicester, UK
| | - Kal Karim
- Chemical Biology, Department of Chemistry, University of Leicester, Leicester, UK
| | - Antonio Guerreiro
- Chemical Biology, Department of Chemistry, University of Leicester, Leicester, UK
| | - Manel del Valle
- Sensors and Biosensors Group, Department of Chemistry, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | | | - Sergey Piletsky
- Chemical Biology, Department of Chemistry, University of Leicester, Leicester, UK
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Chen T, Xu Y, Peng Z, Li A, Liu J. Simultaneous Enhancement of Bioactivity and Stability of Laccase by Cu 2+/PAA/PPEGA Matrix for Efficient Biosensing and Recyclable Decontamination of Pyrocatechol. Anal Chem 2017; 89:2065-2072. [PMID: 28208260 DOI: 10.1021/acs.analchem.6b04691] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Simultaneously enhancing the catalytic bioactivity and stability of enzyme is still an intractable issue in the enzymatic study. Herein, a facile and effective approach was designed to immobilize and modify laccase on a Cu2+-adsorbed pyrene-terminated block copolymer [poly(acrylic acid)/poly(poly(ethylene glycol) acrylate)] (PAA/PPEGA), which was prepared via well-controlled reversible addition-fragmentation chain transfer polymerization. PAA provided the supporting matrix for firm immobilization of Cu2+, an enzyme bioactivity inducer, onto the microstructure of laccase, while avoiding any contamination of the heavy metal Cu2+ into the following application system. The water-soluble, biocompatible, and nontoxic PPEGA was used as an ideal modifier to improve the laccase stability. Accordingly, the modified laccase exhibited enhanced catalytic bioactivity and stability simultaneously to 447% and 237%, respectively. The modified laccase was immobilized on the highly oriented pyrolytic graphite surface and large-area graphene papers through π-π stacking interactions between the pyrene moiety of PAA/PPEGA and the π-conjugated graphenelike surface. The as-prepared portable solid-state electrochemical laccase biosensor showed lowest detection limit of 50 nM (S/N ≥ 3) and long-term stability for pyrocatechol detection. Besides, the laccase immobilization on graphene paper provided efficient pyrocatechol decontamination platform with convenience and recyclability, which could retain the laccase bioactivity of 176% after 8 consecutive operations.
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Affiliation(s)
- Tao Chen
- Center for Micro/Nano Luminescent and Electrochemical Materials, College of Materials Science and Engineering; Institute for Graphene Applied Technology Innovation; Laboratory of Fiber Materials and Modern Textiles, the Growing Base for State Key Laboratory; Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province, Qingdao University , Qingdao 266071, China
| | - Yuanhong Xu
- Center for Micro/Nano Luminescent and Electrochemical Materials, College of Materials Science and Engineering; Institute for Graphene Applied Technology Innovation; Laboratory of Fiber Materials and Modern Textiles, the Growing Base for State Key Laboratory; Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province, Qingdao University , Qingdao 266071, China
| | - Zhi Peng
- Center for Micro/Nano Luminescent and Electrochemical Materials, College of Materials Science and Engineering; Institute for Graphene Applied Technology Innovation; Laboratory of Fiber Materials and Modern Textiles, the Growing Base for State Key Laboratory; Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province, Qingdao University , Qingdao 266071, China
| | - Aihua Li
- Center for Micro/Nano Luminescent and Electrochemical Materials, College of Materials Science and Engineering; Institute for Graphene Applied Technology Innovation; Laboratory of Fiber Materials and Modern Textiles, the Growing Base for State Key Laboratory; Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province, Qingdao University , Qingdao 266071, China
| | - Jingquan Liu
- Center for Micro/Nano Luminescent and Electrochemical Materials, College of Materials Science and Engineering; Institute for Graphene Applied Technology Innovation; Laboratory of Fiber Materials and Modern Textiles, the Growing Base for State Key Laboratory; Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province, Qingdao University , Qingdao 266071, China
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53
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Wang T, Ma J, Chen Y, Li Y, Zhang L, Zhang Y. Analysis of melamine and analogs in complex matrices: Advances and trends. J Sep Sci 2016; 40:170-182. [DOI: 10.1002/jssc.201600854] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 09/20/2016] [Accepted: 09/20/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Tingting Wang
- School of Materials and Chemical Engineering/School of safety engineering; Ningbo University of Technology; Ningbo China
| | - Junfeng Ma
- Department of Biological Chemistry; The Johns Hopkins University School of Medicine; Baltimore MD USA
| | - Yihui Chen
- Xiangshan Entry-Exit Inspection and Quarantine Bureau; Xiangshan China
| | - Ying Li
- School of Materials and Chemical Engineering/School of safety engineering; Ningbo University of Technology; Ningbo China
| | - Lihua Zhang
- Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian China
| | - Yukui Zhang
- Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian China
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54
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Zhang W, Xu G, Liu R, Chen J, Li X, Zhang Y, Zhang Y. Novel MOFs@XC-72-Nafion nanohybrid modified glassy carbon electrode for the sensitive determination of melamine. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.06.100] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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55
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Tang BC, Cai CB, Shi W, Xu L. Rapid Quantification of Melamine in Different Brands/Types of Milk Powders Using Standard Addition Net Analyte Signal and Near-Infrared Spectroscopy. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2016; 2016:9256102. [PMID: 27525154 PMCID: PMC4971385 DOI: 10.1155/2016/9256102] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 05/31/2016] [Accepted: 06/07/2016] [Indexed: 06/06/2023]
Abstract
Multivariate calibration (MVC) and near-infrared (NIR) spectroscopy have demonstrated potential for rapid analysis of melamine in various dairy products. However, the practical application of ordinary MVC can be largely restricted because the prediction of a new sample from an uncalibrated batch would be subject to a significant bias due to matrix effect. In this study, the feasibility of using NIR spectroscopy and the standard addition (SA) net analyte signal (NAS) method (SANAS) for rapid quantification of melamine in different brands/types of milk powders was investigated. In SANAS, the NAS vector of melamine in an unknown sample as well as in a series of samples added with melamine standards was calculated and then the Euclidean norms of series standards were used to build a straightforward univariate regression model. The analysis results of 10 different brands/types of milk powders with melamine levels 0~0.12% (w/w) indicate that SANAS obtained accurate results with the root mean squared error of prediction (RMSEP) values ranging from 0.0012 to 0.0029. An additional advantage of NAS is to visualize and control the possible unwanted variations during standard addition. The proposed method will provide a practically useful tool for rapid and nondestructive quantification of melamine in different brands/types of milk powders.
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Affiliation(s)
- Bang-Cheng Tang
- Institute of Applied Chemistry, College of Material and Chemical Engineering, Tongren University, Tongren, Guizhou 554300, China
| | - Chen-Bo Cai
- College of Chemistry and Life Science, Chuxiong Normal University, Chuxiong 675000, China
| | - Wei Shi
- Institute of Applied Chemistry, College of Material and Chemical Engineering, Tongren University, Tongren, Guizhou 554300, China
| | - Lu Xu
- Institute of Applied Chemistry, College of Material and Chemical Engineering, Tongren University, Tongren, Guizhou 554300, China
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, College of Pharmacy, South-Central University for Nationalities, Wuhan 430074, China
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56
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Zhu X, Xiao Y, Jiang X, Li J, Qin H, Huang H, Zhang Y, He X, Wang K. A ratiometric nanosensor based on conjugated polyelectrolyte-stabilized AgNPs for ultrasensitive fluorescent and colorimetric sensing of melamine. Talanta 2016; 151:68-74. [DOI: 10.1016/j.talanta.2016.01.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Revised: 12/30/2015] [Accepted: 01/08/2016] [Indexed: 02/02/2023]
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57
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Lu Y, Xia Y, Liu G, Pan M, Li M, Lee NA, Wang S. A Review of Methods for Detecting Melamine in Food Samples. Crit Rev Anal Chem 2016; 47:51-66. [DOI: 10.1080/10408347.2016.1176889] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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58
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Zhong Y, Chen Y, Yao L, Zhao D, Zheng L, Liu G, Ye Y, Chen W. Gold nanoparticles based lateral flow immunoassay with largely amplified sensitivity for rapid melamine screening. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1812-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Peris-Vicente J, Albiol-Chiva J, Roca-Genovés P, Esteve-Romero J. Advances on melamine determination by micellar liquid chromatography: A review. J LIQ CHROMATOGR R T 2016. [DOI: 10.1080/10826076.2016.1152482] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Juan Peris-Vicente
- Química Bioanalítica, QFA, ESTCE, Campus del Riu Sec, Universitat Jaume I, Castelló, Spain
| | - Jaume Albiol-Chiva
- Química Bioanalítica, QFA, ESTCE, Campus del Riu Sec, Universitat Jaume I, Castelló, Spain
| | - Pasqual Roca-Genovés
- Química Bioanalítica, QFA, ESTCE, Campus del Riu Sec, Universitat Jaume I, Castelló, Spain
| | - Josep Esteve-Romero
- Química Bioanalítica, QFA, ESTCE, Campus del Riu Sec, Universitat Jaume I, Castelló, Spain
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Tsartsali N, Samanidou VF. Sample Preparation of Eggs From Laying Hens Using QuEChERS Dispersive Extraction for the Simultaneous Determination of Melamine and Cyromazine Residues by HPLC-DAD. ANALYTICAL CHEMISTRY INSIGHTS 2015; 10:53-8. [PMID: 26715832 PMCID: PMC4687980 DOI: 10.4137/aci.s31727] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 10/21/2015] [Accepted: 11/05/2015] [Indexed: 11/23/2022]
Abstract
A quick, easy, cheap, effective, rugged, and safe (QuEChERS) dispersive extraction method is proposed herein for the isolation and cleanup of melamine and cyromazine from chicken egg yolk. Analytes are determined by high-performance liquid chromatography using photodiode array detector after separation on a LiChroCART® (250 × 4 mm)—LiChrospher® RP-8e, 5 μm analytical column using a mobile phase of 0.1% trifluoracetic acid and methanol (80:20 v/v) delivered isocratically at a flow rate of 1 mL/minute. Extraction of isolated compounds was achieved by methanol and acetonitrile mixture (1:1 v/v). Recovery rates ranged between 74.5% and 115.8%. The method was validated in terms of 657/2002/EC decision. The within-laboratory reproducibility, expressed as a relative standard deviation, was <11%. Decision limits (CCalfa) were 2.56 mg/kg for melamine and 0.22 mg/kg−1 for cyromazine, and the corresponding results for detection capability (CCbeta) were 2.8 mg/kg for melamine and 0.24 mg/kg for cyromazine. Ruggedness was estimated according to the Youden approach studying egg yolk mass, sorbent mass, centrifugation time, organic solvents volume, evaporation temperature, and vortex time.
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Affiliation(s)
- Niki Tsartsali
- Department of Chemistry, Laboratory of Analytical Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Victoria F Samanidou
- Department of Chemistry, Laboratory of Analytical Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
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