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A multiclass screening method to detect fifty-three forbidden substances by liquid-chromatography coupled to hybrid high-resolution mass spectrometry (LC-Q-Orbitrap) was developed and validated in bovine bile and urine. Eight classes of compounds were included in the method's scope (β-agonists, corticosteroids, nitroimidazoles, progestins, resorcylic acid lactones (RALs), sedatives, steroids and stilbenes)...
European Union prohibited the use of anabolic agents in food producing animals since 1988. An efficient control of abuses is guaranteed not only by highly performing analytical methods, but also by knowledge of metabolic pathways, kinetics of elimination and tissue distribution. To obtain data concerning metabolites production and accumulation in bile, two typical growth promoting treatments are carried...
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