期刊
FOOD CHEMISTRY
卷 293, 期 -, 页码 83-91出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2019.04.088
关键词
Beverages; Residues; UPLC-MS/MS; Direct aqueous injection; Dilute and shoot
资金
- National Council for Scientific and Technological Development (CNPq)
- Coordination for the Improvement of Higher Level Personnel (CAPES)
- Studies and Projects Finance Organization (FINEP)
- Ministry of Agriculture, Livestock and Food Supply (MAPA)
- Brazilian Ministry of Science, Technology and Innovation (MCTI)
- Federal University of Santa Maria (UFSM)
- Institutional Program of Scientific Initiation Fellowships
A simple and rapid method for simultaneous determination of pesticides and mycotoxins in red wine is presented. Sample preparation approach, called direct injection, consists of a sequence of only three steps: centrifugation, dilution and filtration. The analysis of extracts were performed by UPLC-MS/MS for determination of pesticides and mycotoxins. The method was assessed for linearity, limits of detection and quantification, matrix effects, selectivity, accuracy and precision. For recovery experiments, mycotoxins were divided in two groups according to their sensitivity in the UPLC-MS/MS system. More than 80% of the mycotoxins were reliably quantified at the lowest spike level studied (1 mu g kg(-1) for group 1 and 50 mu g kg(-1) for group 2). From the 185 evaluated pesticides, 144 showed acceptable results at 10 mu g kg(-1), the lowest spiked level. Matrix effects were, in most of the cases, negative, and that was observed for both pesticides and mycotoxins.
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