Novel electrochemical sensor for the selective recognition of chlorogenic acid

dc.creatorSantos, WDR
dc.creatorSanthiago, M
dc.creatorYoshida, IVP
dc.creatorKubota, LT
dc.date2011
dc.date40330
dc.date2014-07-30T14:48:46Z
dc.date2015-11-26T17:41:20Z
dc.date2014-07-30T14:48:46Z
dc.date2015-11-26T17:41:20Z
dc.date.accessioned2018-03-29T00:23:07Z
dc.date.available2018-03-29T00:23:07Z
dc.identifierAnalytica Chimica Acta. Elsevier Science Bv, v. 695, n. 41671, n. 44, n. 50, 2011.
dc.identifier0003-2670
dc.identifierWOS:000292357000004
dc.identifier10.1016/j.aca.2011.03.018
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/62142
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/62142
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1286983
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionIn this study, a novel sensitive molecularly imprinted electrochemical sensor was constructed for the selective detection of chlorogenic acid (CGA) by deposition of a molecularly imprinted siloxane (MIS) film, prepared by sol-gel process, onto Au bare electrode surface. Initially, a (3-mercaptopropyl)siloxane layer (MSL) was formed on the Au bare surface, followed by a siloxane layer obtained from the acid-catalyzed hydrolysis/condensation of a solution constituted by tetraethoxysilane (TEOS), phenyltriethoxysilane (PTEOS), 3-(aminopropyl)trimethoxysilane (APTMS) and CGA, as a molecular template. After the GCA extraction the MIS imprinted film was electrochemically characterized using differential pulse voltammetry (DPV). The MIS/Au sensor was tested in a solution of the CGA template and other similar molecules. This electrode displayed excellent selectivity towards CGA when compared with structurally similar molecules. Under optimized experimental conditions, the peak current response of the sensor for CGA was linear from 5.0 x 10(-7) mol L(-1) to 1.4 x 10(-5) mol L(-1), and the detection limit was 1.48 x 10(-7) mol L(-1). The MIS/Au sensor was successfully applied for the determination of CGA in coffee and tea samples. (C) 2011 Elsevier B.V. All rights reserved.
dc.description695
dc.description41671
dc.description44
dc.description50
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationAnalytica Chimica Acta
dc.relationAnal. Chim. Acta
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectMolecularly imprinted siloxane
dc.subjectSol-gel
dc.subjectSensor
dc.subjectChlorogenic acid recognition
dc.subjectSolid-phase Extraction
dc.subjectMolecularly Imprinted Polymer
dc.subjectGel Films
dc.subjectSilica
dc.subjectCoffee
dc.subjectScaffolds
dc.subjectCaffeine
dc.subjectSurface
dc.titleNovel electrochemical sensor for the selective recognition of chlorogenic acid
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución