Quantification of methomyl levels in cabbage, tomato, and soya milk using a renewable amperometric biosensor

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dc.contributor.authorCaetano, Josiane
dc.contributor.authorDragunski, Douglas C.
dc.contributor.authorPedrosa, Valber A. [UNESP]
dc.contributor.authorMachado, Sergio A.S.
dc.contributor.institutionUniversidade Estadual do Oeste do Parań
dc.contributor.institutionUNIPAR
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-27T11:29:38Z
dc.date.available2014-05-27T11:29:38Z
dc.date.issued2013-06-01
dc.description.abstractAn enzymatic biosensor based on inhibition of acetylcholinesterase activity was developed to analyze methomyl contamination in different matrices. The detection limits under optimal working conditions were found to be 30.4 μg L-1 methomyl using the biosensor and 0.15 μg L-1 using HPLC. The biosensor was then applied to analysis of methomyl in fruit and vegetable samples at concentrations in the ppb range in the absence of sample pretreatment. Recovery levels using the biosensor were effective, ranging from 78.0 to 96.5%, while the HPLC method yielded 57.0 to 99.5% recovery. Results for total carbamate concentrations obtained using the acetylcholinesterase biosensor were compared to those obtained using HPLC. © 2013 by ESG.en
dc.description.affiliationUniversidade Estadual do Oeste do Parań, 85903-000 - Toledo - Paraná
dc.description.affiliationUniversidade Paranaense UNIPAR, Umuarama- PR
dc.description.affiliationInstitute of Bioscience Department of Chemistry and Biochemistry UNESP, Botucatu, SP
dc.description.affiliationInstituto de Química de São Carlos Universidade de São Paulo, 13560-970 São Carlos - SP
dc.description.affiliationUnespInstitute of Bioscience Department of Chemistry and Biochemistry UNESP, Botucatu, SP
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 03/07653-8
dc.description.sponsorshipIdFAPESP: 06/51625-7
dc.format.extent7795-7805
dc.identifierhttp://www.electrochemsci.org/papers/vol8/80607795.pdf
dc.identifier.citationInternational Journal of Electrochemical Science, v. 8, n. 6, p. 7795-7805, 2013.
dc.identifier.file2-s2.0-84878993001.pdf
dc.identifier.issn1452-3981
dc.identifier.lattes7781282422851911
dc.identifier.scopus2-s2.0-84878993001
dc.identifier.urihttp://hdl.handle.net/11449/75595
dc.identifier.wosWOS:000323546100026
dc.language.isoeng
dc.relation.ispartofInternational Journal of Electrochemical Science
dc.relation.ispartofjcr1.369
dc.relation.ispartofsjr0,366
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectBiosensor
dc.subjectFood analysis
dc.subjectMethomyl
dc.subjectPesticides
dc.titleQuantification of methomyl levels in cabbage, tomato, and soya milk using a renewable amperometric biosensoren
dc.typeArtigo
unesp.author.lattes7781282422851911
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt

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