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Campo DC | Valor | Idioma |
---|---|---|
dc.creator | Abreu, Daiane Cássia Pereira | - |
dc.creator | Oliveira, Fabiano Aurelio da Silva | - |
dc.creator | Vargas, Eugenia | - |
dc.creator | Madureira, Fernando | - |
dc.creator | Saczk, Adelir Aparecida | - |
dc.date.accessioned | 2019-07-18T19:46:35Z | - |
dc.date.available | 2019-07-18T19:46:35Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | ABREU, D. C. P. et al. Dilute-and-shoot and quechers modified in house for determination of multimycotoxins in cocoa. In: BRAZILIAN CONFERENCE ON MASS SPECTROMETRY, 7.; BRAZILIAN PROTEOMICS SOCIETY CONFERENCE, 4., 2018, Rio de Janeiro. Conference Book… [S.l.]: [s.n.], 2018. p. 70. | pt_BR |
dc.identifier.uri | http://repositorio.ufla.br/jspui/handle/1/35461 | - |
dc.identifier.uri | http://congresso2018.brmass.com/wp-content/uploads/2018/12/7thBrmassBookvs12022018.pdf | - |
dc.description.abstract | Due 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. | pt_BR |
dc.description.uri | http://congresso2018.brmass.com/wp-content/uploads/2018/12/7thBrmassBookvs12022018.pdf | pt_BR |
dc.language | en_US | pt_BR |
dc.rights | restrictAccess | pt_BR |
dc.subject | Liquid chromatography-tandem mass spectrometry (LC-MS/MS) | pt_BR |
dc.subject | Food safety | pt_BR |
dc.subject | Sample preparation | pt_BR |
dc.title | Dilute-and-shoot and quechers modified in house for determination of multimycotoxins in cocoa | pt_BR |
dc.type | Trabalho apresentado em evento | pt_BR |
Aparece nas coleções: | DQI - Trabalhos apresentados em eventos |
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