Validation and estimation of uncertainty of an LC-MS/MS method for the simultaneous determination of 34 mycotoxins in cocoa beans

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorAbreu, Daiane Cássia Pereira-
Autor(es): dc.creatorVargas, Eugenia Azevedo-
Autor(es): dc.creatorOliveira, Fabiano Aurélio da Silva-
Autor(es): dc.creatorMadureira, Fernando Diniz-
Autor(es): dc.creatorGomes, Mateus Batista-
Autor(es): dc.creatorBazzana, Matheus Julien Ferreira-
Autor(es): dc.creatorSaczk, Adelir Aparecida-
Data de aceite: dc.date.accessioned2026-02-09T11:23:04Z-
Data de disponibilização: dc.date.available2026-02-09T11:23:04Z-
Data de envio: dc.date.issued2023-04-19-
Data de envio: dc.date.issued2023-04-19-
Data de envio: dc.date.issued2022-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/56683-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0308814622018647-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1139742-
Descrição: dc.descriptionThe aim of this manuscript was to validate and apply an analytical methodology for the simultaneous determination of 34 mycotoxins in cocoa. The extraction method used in the tests was a liquid–liquid partition by NaCl addition with a freezing step followed by quantification using LC-MS/MS. The results were discussed based on national and international directives for food contaminants. The recoveries and precision were adequate, except for the mycotoxins ionized with the ammonium adduct (NH4+), E-cristinine and β-ZOL. This result directly influenced the measurement uncertainty of these mycotoxins, because the precision and the correction factor of the recovery were the factors with the greatest impact on the uncertainty of the method. The evaluation of the matrix effect showed considerable signal suppression for 53 % of the evaluated mycotoxins. Nevertheless, the mycotoxins exhibited relatively low quantification limits, with values between 1 and 75 μg kg−1. The validated methodology was applied to 15 cocoa samples collected in warehouses in Brazil. Positive results were found for all the evaluated samples, in which nine toxins were detected out of the 34 investigated.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceFood Chemistry-
Palavras-chave: dc.subjectMulti-mycotoxin-
Palavras-chave: dc.subjectFood safety-
Palavras-chave: dc.subjectSample preparation-
Título: dc.titleValidation and estimation of uncertainty of an LC-MS/MS method for the simultaneous determination of 34 mycotoxins in cocoa beans-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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