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Use este identificador para citar o ir al link de este elemento: http://hdl.handle.net/1843/67846
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Campo DCValorIdioma
dc.creatorRosimeire Resende dos Santospt_BR
dc.creatorRicardo Mathias Orlandopt_BR
dc.creatorZenilda de Lourdes Cardealpt_BR
dc.creatorHelvécio Costa Menezespt_BR
dc.date.accessioned2024-04-29T14:40:21Z-
dc.date.available2024-04-29T14:40:21Z-
dc.date.issued2021-
dc.citation.volume126pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.foodcont.2021.108104pt_BR
dc.identifier.issn1873-7129pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/67846-
dc.description.resumoSample preparation assisted by a cooling system including solid phase microextraction (SPME) has received an increased interest in recent years. In this work, a new cold fiber (CF-SPME) system using thermoelectric cooling is proposed. The system consists of three thermoelectric coolers (Peltier), a heat sink, a recirculation module to dissipate the heat generated on the hot side, and an electric power source to generate the necessary voltage for the system. The Peltier keeps the SPME fiber cool during the extraction process.. This system was used to analyze polycyclic aromatic hydrocarbons (PAHs), and their nitrated (nitro-PAHs) and oxygenated (oxy-PAHs) derivatives, in commercial beers b gas chromatography coupled to mass spectrometry (GC/MS). The analyte's extraction was optimized through Doehlert design. Optimal extraction conditions were obtained with a salt content of 0.6% w/v and beer volume of 700.0 μL. The validated method showed limits of detection (LOD) in the range of 0.003–0.128 μg L−1 and limits of quantification (LOQ) from 0.011 to 0.427 μg L−1. Precision Coefficients of Variation values ranged from 3.0 to 18.7%, and recovery values of the analytes in beer varied between 80.1 and 100.3%. Among the PAHs derivatives evaluated in this study, only 9-fluorenone and 9-nitroanthracene were detected in some samples. Benzo[b]fluoranthene was the most detected analyte in the samples, and at least one PAH was detected in all samples. Principal component analysis (PCA) separated the samples into two groups, mainly due to the high relative concentrations of acenaphthene and chrysene. The cooling approach improved the extraction efficiency and the new system demonstrated high potential for portability and automation.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.description.sponsorshipFAPESP - Fundação de Amparo à Pesquisa do Estado de São Paulopt_BR
dc.description.sponsorshipOutra Agênciapt_BR
dc.format.mimetypepdfpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofFood Controlpt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectCF-SPMEpt_BR
dc.subjectGC/MSpt_BR
dc.subjectBeerpt_BR
dc.subjectPAHs and derivativespt_BR
dc.subjectSample preparationpt_BR
dc.subject.otherPreparação de amostra (Química)pt_BR
dc.subject.otherCervejapt_BR
dc.subject.otherHidrocarbonetos policiclicos aromaticospt_BR
dc.subject.otherCromatografia de gáspt_BR
dc.titleAssessment of polycyclic aromatic hydrocarbons and derivatives in beer using a new cold fiber-solid phase microextraction systempt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S0956713521002425pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-3862-1211pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-1383-6299pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-5759-612Xpt_BR
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