Dilute-and-shoot and quechers modified in house for determination of multimycotoxins in cocoa

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorAbreu, Daiane Cássia Pereira-
Autor(es): dc.creatorOliveira, Fabiano Aurelio da Silva-
Autor(es): dc.creatorVargas, Eugenia-
Autor(es): dc.creatorMadureira, Fernando-
Autor(es): dc.creatorSaczk, Adelir Aparecida-
Data de aceite: dc.date.accessioned2026-02-09T11:16:29Z-
Data de disponibilização: dc.date.available2026-02-09T11:16:29Z-
Data de envio: dc.date.issued2019-07-18-
Data de envio: dc.date.issued2019-07-18-
Data de envio: dc.date.issued2018-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/35461-
Fonte completa do material: dc.identifierhttp://congresso2018.brmass.com/wp-content/uploads/2018/12/7thBrmassBookvs12022018.pdf-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1137359-
Descrição: dc.descriptionDue to the high complexity of the cocoa matrices, a modification to the dilute-and-shoot and QuEChERS methods was proposed for the simultaneous analysis of 42 mycotoxins. The modification allowed an efficient extraction with reduced co-extractives of the matrix without clean up step with LCMS/MS analysis. The ideal condition was: extraction of the cocoa paste with a ratio of 6:4 ACN/H2O (v/v), followed by partitioning of the extractive phase with addition of 3g of NaCl, stirring on a shaker table for 60min and freezing for 15min at -70ºC, the mixture was centrifuged and the supernatant collected for analysis. The performance of the proposed method was evaluated for 35 mycotoxins, considering the recovery range of 70-120% and RSD less than 20%, 5 mycotoxins presented an unsatisfactory result one of the levels of fortification. LD's ranged in between 1.3-27.6μg kg-1. The limits of aflatoxins and ochratoxins defined in the legislation for cocoa were met.-
Descrição: dc.descriptionhttp://congresso2018.brmass.com/wp-content/uploads/2018/12/7thBrmassBookvs12022018.pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrictAccess-
Palavras-chave: dc.subjectLiquid chromatography-tandem mass spectrometry (LC-MS/MS)-
Palavras-chave: dc.subjectFood safety-
Palavras-chave: dc.subjectSample preparation-
Título: dc.titleDilute-and-shoot and quechers modified in house for determination of multimycotoxins in cocoa-
Tipo de arquivo: dc.typeTrabalho apresentado em evento-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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