Researchers Determine 23 Pesticides in Leafy Vegetables Using a GC-MS Method
Researchers from the Nutrition and Bromatology Group, Analytical and Food Chemistry Department, and Faculty of Food Science and Technology at the University of Vigo (Ourense, Spain) have developed a GC-MS method for determining residues of 12 insecticides and 11 fungicides in leafy vegetables.
Researchers from the Nutrition and Bromatology Group, Analytical and Food Chemistry Department, and Faculty of Food Science and Technology at the University of Vigo (Ourense, Spain) have developed a GC-MS method for determining residues of 12 insecticides (acrinathrin, bifenthrin, carbofuran, cyfluthrin, cyhalothrin, cypermethrin, chlorfenvinphos, deltamethrin, esfenvalerate, fenamiphos, methiocarb and fluvalinate) and 11 fungicides (cyprodinil, fludioxonil, iprodione, metalaxyl, penconazole, pyrimethanil, procymidone tebuconazole, triadimefon, triadimenol and vinclozolin) in leafy vegetables. The method was applied to determine pesticide residues in commercial leafy vegetables (lettuce, Swiss chard, and spinach) purchased from markets in Orense, Spain. Pesticide residues were detected in 84% of the total samples (63 from 75 samples) and pesticide concentrations were higher than MRL in 18 samples.
Analytical Challenges in Measuring Migration from Food Contact Materials
November 2nd 2015Food contact materials contain low molecular weight additives and processing aids which can migrate into foods leading to trace levels of contamination. Food safety is ensured through regulations, comprising compositional controls and migration limits, which present a significant analytical challenge to the food industry to ensure compliance and demonstrate due diligence. Of the various analytical approaches, LC-MS/MS has proved to be an essential tool in monitoring migration of target compounds into foods, and more sophisticated approaches such as LC-high resolution MS (Orbitrap) are being increasingly used for untargeted analysis to monitor non-intentionally added substances. This podcast will provide an overview to this area, illustrated with various applications showing current approaches being employed.
