Análise isotópica do carbono e legalidade de polpas, sucos tropicais e néctares comerciais de goiaba

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dc.contributor.authorNogueira, Andressa Milene Parente [UNESP]
dc.contributor.authorFigueira, Ricardo [UNESP]
dc.contributor.authorDucatti, Carlos [UNESP]
dc.contributor.authorVenturini Filho, Waldemar Gastoni [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-12-11T17:15:38Z
dc.date.accessioned2018-12-11T17:10:45Z
dc.date.available2018-12-11T17:15:38Z
dc.date.available2018-12-11T17:10:45Z
dc.date.issued2016-01-01
dc.description.abstractThe aim of this study was to quantify the carbon of C3 photosynthetic cycle in guava commercial pulps, tropical juices and nectars through the carbon stable isotope technique to identify the beverages at odds with Brazilian law. The isotope analyzes were performed in the following materials: cane sugar, additives, laboratory-fabricated beverages and commercial beverages. After preparation, the samples were packed in tin capsules and inserted into the elemental analyzer (EA 1108 - CHN - Fisons Elemental Analyzer) to determine the relative isotope enrichment in Isotopic Ratios Mass Spectrometer (IRMS) (Delta S Finnigan Mat). To estimate the error of the isotope method were produced in laboratory sweetened tropical juices and nectars according to their Identity and Quality Pattern (PIQ) and also adulterated beverages with amount of pulp below of the established by Brazilian law. In these beverages was measured the theoretical percentage and determined in IRMS the practical percentage of C3 source. The difference between these measurements represented the error of the method. To determine the legality of commercial beverages was measured the Legal Limit (LL) according to the PIQ of each beverage. The LL provided the minimum concentration of C3 source that a beverage must contain to be considered legal by the Brazilian legislation. Eighteen brands of guava non-alcoholic beverages were analyzed. Four brands were classified as adulterated. The technique that uses carbon stable isotopes to check adulteration in beverages allowed identifying with security the fraudulent products. The legal limit was an important methodological innovation that made it possible to identify adulterated beverages.en
dc.description.affiliationLaboratório de Bebidas Faculdade de Ciências Agronômicas UNESP
dc.description.affiliationCentro de Isótopos Estáveis Ambientais Instituto de Biociências UNESP
dc.description.affiliationUnespLaboratório de Bebidas Faculdade de Ciências Agronômicas UNESP
dc.description.affiliationUnespCentro de Isótopos Estáveis Ambientais Instituto de Biociências UNESP
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2009/53974-7
dc.identifier.citationBoletim Centro de Pesquisa de Processamento de Alimentos, v. 34, n. 2, 2016.
dc.identifier.doi10.5380/bceppa.v34i2.59323
dc.identifier.issn1983-9774
dc.identifier.issn0102-0323
dc.identifier.scopus2-s2.0-85032336922
dc.identifier.scopus2-s2.0-85015968279
dc.identifier.urihttp://hdl.handle.net/11449/180904
dc.language.isopor
dc.relation.ispartofBoletim Centro de Pesquisa de Processamento de Alimentos
dc.relation.ispartofsjr0,117
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectAdulteration
dc.subjectBeverage
dc.subjectCarbon-13
dc.subjectIRMS
dc.subjectIsotope
dc.subjectPsidium guajava
dc.titleAnálise isotópica do carbono e legalidade de polpas, sucos tropicais e néctares comerciais de goiabapt
dc.title.alternativeCarbon isotope analysis and legality in guava commercial pulps, tropical juices and nectarsen
dc.typeArtigo

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Botucatu - CIE - Centro de Isótopos Estáveis