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dc.contributor.authorBarroso, Javier
dc.contributor.authorDíez-Buitrago, Beatriz
dc.contributor.authorSaa, Laura
dc.contributor.authorMöller, Marco
dc.contributor.authorBriz, Nerea
dc.contributor.authorPavlov, Valeri
dc.date.accessioned2018-03-06T09:33:14Z
dc.date.available2018-03-06T09:33:14Z
dc.date.issued2018-03-15
dc.identifier.citationBarroso, Javier, Beatriz Díez-Buitrago, Laura Saa, Marco Möller, Nerea Briz, and Valeri Pavlov. “Specific Bioanalytical Optical and Photoelectrochemical Assays for Detection of Methanol in Alcoholic Beverages.” Biosensors and Bioelectronics 101 (March 2018): 116–122. doi:10.1016/j.bios.2017.10.022.en
dc.identifier.issn0956-5663en
dc.identifier.urihttp://hdl.handle.net/11556/503
dc.description.abstractMethanol is a poison which is frequently discovered in alcoholic beverages. Innovative methods to detect methanol in alcoholic beverages are being constantly developed. We report for the first time a new strategy for the detection of methanol using fluorescence spectroscopy and photoelectrochemical (PEC) analysis. The analytical system is based on the oxidation of cysteine (CSH) with hydrogen peroxide (H2O2) enzymatically generated by alcohol oxidase (AOx). H2O2 oxidizes capping agent CSH, modulating the growth of CSH-stabilized cadmium sulphide quantum dots (CdS QDs). Disposable screen-printed carbon electrodes (SPCEs) modified with a conductive osmium polymer (Os-PVP) complex were employed to quantify resulting CdS QDs. This polymer facilitates the “wiring” of in situ enzymatically generated CdS QDs, which photocatalyze oxidation of 1-thioglycerol (TG), generating photocurrent as the readout signal. Likewise, we proved that our systems did not suffer from interference by ethanol. The PEC assays showed better sensitivity than conventional methods, covering a wide range of potential applications for methanol quantification.en
dc.description.sponsorshipthe Spanish Ministry of Economy and Competitiveness (project BIO2014-59741).en
dc.language.isoengen
dc.publisherELSEVIER ADVANCED TECHNOLOGY, OXFORD FULFILLMENT CENTRE THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDen
dc.titleSpecific bioanalytical optical and photoelectrochemical assays for detection of methanol in alcoholic beveragesen
dc.typearticleen
dc.identifier.doi10.1016/j.bios.2017.10.022en
dc.isiYesen
dc.rights.accessRightsembargoedAccessen
dc.subject.keywordsQuantum dotsen
dc.subject.keywordsMethanolen
dc.subject.keywordsFluorescenceen
dc.subject.keywordsPhotoelectrochemistryen
dc.subject.keywordsCysteineen
dc.identifier.essn1873-4235en
dc.journal.titleBiosensors and Bioelectronicsen
dc.page.final122en
dc.page.initial116en
dc.volume.number101en


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