Abstract
The production of grape juice in Brazil is growing at a 30 % rate a year. To increase exports, a full complainment to food safety protocols, as those in the Codex Alimentarius, is mandatory. Simple and fast analytical methods are needed for quality assurance. The objective of this work was to develop and validate an analytical method for detection of pesticides residues (organochlorides, organophosphorides, and fungicides) in Brazilian whole grape juices. The analyses were performed by gas chromatography coupled to mass spectrometry, operating in selective ion monitoring. After liquid–liquid extraction, samples were preconcentrate using solid-phase extraction in Florisil. The limit of quantification ranged from 3.75 to 9.47 mg l-1, and recovery varied from 84.0 % to 99.7 %, with RSD lower than 4.9 %. From a total of 99 Brazilian grape juices analyzed, pesticide residues were found in 32.
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Acknowledgments
The authors thank CAPES for research fellowships and CNPq and FAPERJ for financial support.
Conflict of Interest
Andréa A.R. Alves declares that he has no conflict of interest. Aline S. Rodrigues declares that he has no conflict of interest. Elisabete Paula Barros declares that he has no conflict of interest. Thaís M. Uekane declares that he has no conflict of interest. Humberto R. Bizzo declares that he has no conflict of interest. Claudia M. Rezende declares that he has no conflict of interest. This article does not contain any studies with human or animal subjects.
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Alves, A.A.R., Rodrigues, A.S., Barros, E.B.P. et al. Determination of Pesticides Residues in Brazilian Grape Juices Using GC-MS-SIM. Food Anal. Methods 7, 1834–1839 (2014). https://doi.org/10.1007/s12161-014-9823-9
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DOI: https://doi.org/10.1007/s12161-014-9823-9