Composite electrochemical biosensors: a comparison of three different electrode matrices for the construction of amperometric tyrosinase biosensors

Serra, B.; Jiménez, Sergio; Mena, M.L.; Reviejo, A.J.; Pingarrón, José M.

doi:10.1016/s0956-5663(01)00269-x

Cited by 81 publications

(58 citation statements)

References 23 publications

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“…A relative standard deviation (RSD) of 3.5% has been observed for ten successive determination of 0.1 mM catechol, indicating the reliable reproducibility of the sensor. The analytical performance of the tyrosinase-based biosensor was compared with those reported for other recent tyrosinase-based biosensor, [33][34][35][36][37] as can been seen in Table 1. It can be deduced that the developed tyr/AuNPs/MTPS/Au biosensor allows a wide range of linearity, and provides a fast current response.…”

Section: Amperometric Response Of the Biosensor Toward Catecholmentioning

confidence: 99%

Gold Nanoparticles-Enhanced Amperometric Tyrosinase Biosensor Based on Three-Dimensional Sol-Gel Film-Modified Gold Electrodes

Ren

Wang

et al. 2013

ANAL. SCI.

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Section: Amperometric Response Of the Biosensor Toward Catecholmentioning

confidence: 99%

Gold Nanoparticles-Enhanced Amperometric Tyrosinase Biosensor Based on Three-Dimensional Sol-Gel Film-Modified Gold Electrodes

Ren

Wang

et al. 2013

ANAL. SCI.

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“…This result indicates that the amine group on the electrode was an important factor in the immobilization of enzymes. In previous papers, 15,19,[22][23][24][25][26] tyrosinase immobilized-biosensors based on MWNT supports have also been prepared through the physical adsorption of tyrosinase onto electrodes supporting MWNTs with hydrophilic functional groups. In this case, a polymer binder, usually Nafion, was used to coat the MWNT supports with hydrophilic groups.…”

Section: 폴리머 제36권 제4호 2012년mentioning

confidence: 99%

Introduction of Various Amine Groups onto Poly(glycidyl methacrylate)-g-MWNTs and their Application as Biosensor Supports

)¹,

김기출²,

최성호³

2012

Polymer Korea

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A tyrosinase-immobilized biosensor was developed based on various amine-modified multi-walled carbon nanotube (MWNT) supports for the detection of phenolic compounds. MWNTs with various amine groups were prepared by radiation-induced graft polymerization of glycidyl methacrylate (GMA) onto MWNT supports and the subsequent amination of poly(GMA) graft chains. The physical and chemical properties of the poly(GMA)-grafted MWNT supports and the aminated MWNT supports were investigated by SEM, XPS, and TGA. Furthermore, the electrochemical properties of the prepared tyrosinase-modified biosensor based on MWNT supports with amine groups were also investigated. The response of the enzymatic biosensor was in the range of 0.1-0.9 mM for the concentration of phenol in a phosphate buffer solution. Various parameters influencing biosensor performance have been optimized: binder effects, pH, temperature, and the response to various phenolic compounds. The biosensor was tested on phenolic compounds contained in two different commercial red wines.

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“…Os limites de detecção foram de 5 µmol L -1 para o diazinon e de 75 nmol L -1 para o diclorvos. Serra et al 88 comparam três diferentes matrizes rígidas para a construção de um biossensor baseado em tirosinase imobilizada, sendo estas matrizes compostas por grafite-teflon; carbono vítreo reticulado-resina epóxi e grafitepolímero etileno/propileno/dieno (EPD). A melhor reprodutibilidade do sensor foi obtida com grafite-EPD.…”

Section: Biossensores Baseados Em Enzimas Tirosinasesunclassified

Biossensores baseados no processo de inibição enzimática

Marques¹,

Yamanaka²

2008

Quím. Nova

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Recebido em 3/5/07; aceito em 30/11/07; publicado na web em 4/9/08 BIOSENSORS BASED ON THE ENZYMATIC INHIBITION PROCESS. Fast, selective, reproducible and reliable detections have been carried out by using enzymatic biosensors in several areas. The enzymatic biosensors based on the inhibition represent an important role in analytical chemistry. Enzymes like cholinesterases, peroxidases, tyrosinases, etc. have been immobilized on electrochemical and optical transducers and the enzymatic activity decreasing in the presence of the inhibitor is related with its concentrations. This article presents a review on the enzymes used on the construction of these sensors, emphasizing the respective applications.

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Composite electrochemical biosensors: a comparison of three different electrode matrices for the construction of amperometric tyrosinase biosensors

Cited by 81 publications

References 23 publications

Gold Nanoparticles-Enhanced Amperometric Tyrosinase Biosensor Based on Three-Dimensional Sol-Gel Film-Modified Gold Electrodes

Gold Nanoparticles-Enhanced Amperometric Tyrosinase Biosensor Based on Three-Dimensional Sol-Gel Film-Modified Gold Electrodes

Introduction of Various Amine Groups onto Poly(glycidyl methacrylate)-g-MWNTs and their Application as Biosensor Supports

Biossensores baseados no processo de inibição enzimática

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