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The European food industry and the consumers are confused. The European food industry and the consumers are confused. Residues of insecticides Fipronil were found in the eggs from Belgium and Netherlands. Over 10 million eggs were transported to Germany. Even though in the case of Fipronil the “all-clear” signals were received, remains the question, what else covertly slumbers in our food products and how can we protect ourselves from that. Food chemist Prof. Dr. Karl Speer and his team of TU Dresden researches for many years in his research group on the analytics of pesticide residues in food products. “Especially with eggs,” Speer says, “The carry-over-effect is easily observed, while transporting the substances from the animal feed or through the application of insecticides in stables, in the final animal product.” In the year 2015, he and his team developed an innovative approach for the simultaneous detection of over 170 pesticides in the chicken eggs, within the dissertation of Dr. Fanny Hildmann. The approach, which includes the detailed results, was published in 2015 in the Journal of Chromatography A titled "Pesticide residues in chicken eggs - A sample preparation methodology for analysis by gas and liquid chromatography/tandem mass spectrometry." With this multi-method, which was formed in collaboration with the state research centers for the healthcare and veterinary in Saxony, could be determined simultaneously for the first time 97 pesticides, which are detectable with the gas chromatography (GC), and 81 - with the liquid chromatography (LC), while Fipronil is the part of the pesticides. The technique is based on the extraction with the help of the Matrix Solid Phase Dispersion, the purification, based on the modified gel permeation chromatography (GPC) and two other different solid phase extractions (SPEs) for GC and LC-detectable pesticides, as well as quantification with the help of the GC and LC-MS/MS. In the early stages of the development, the method showed itself as the routine-testing and promising. Apart from the eggs, further matrixes such as poultry and cream were analyzed successfully. “After the successful large-scale ring trial through the EU reference laboratory for pesticides in food products of the animal nature (Freiburg) this method might be converted into so-called §64 LFGB method”, these are hopes of Prof.

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