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Método QuEChERS para determinação de ocratoxina a e citrinina em arroz e farelo de arroz

By Helen C. dos S. Hackbart, Michele Moraes de Souza, Priscila Tessmer Scaglioni, Ednei G. Primel, Jaqueline Garda-Buffon and Eliana Badiale-Furlong


The present study was carried out to establish the optimal conditions for performing ochratoxin A (OTA) and citrinin (CIT) extraction using the QuEChERS method in rice. Employing the factorial experimental design, variables that significantly influenced the extraction stages were determined. The following variables were analyzed: addition of water, acidification of acetonitrile with glacial acetic acid, as well as amounts of magnesium sulfate, sodium acetate, sodium citrate and diatomaceous earth. The best combining procedure resulted in a predictive model using more water and less diatomaceous earth. Recoveries of CIT and OTA were 78-105%

Topics: ochratoxin A, citrinin, QuEChERS method, Chemistry, QD1-999, Science, Q
Publisher: Sociedade Brasileira de Química
Year: 2012
DOI identifier: 10.1590/S0100-40422012000900006
OAI identifier: oai:doaj.org/article:05c311b02be942a2b03e47a869be4f9d
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