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Keijser, B.J.F. (author), Agamennone, V. (author), van den Broek, T.J. (author), Caspers, M. (author), van de Braak, A. (author), Bomers, R. (author), Havekes, M. (author), Schoen, E. (author), van Baak, M. (author), Mioch, D. (author), Bomers, L. (author), Montijn, R.C. (author)Background: Antibiotic therapy is commonly used in animal agriculture. Antibiotics excreted by the animals can contaminate farming environments, resulting in long term exposure of animals to sub-inhibitory levels of antibiotics. Little is known on the effect of this exposure on antibiotic resistance. In this study, we aimed to investigate the...article 2019
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van Hoof, N. (author), Schilt, R. (author), van der Vlis, E. (author), Boshuis, P. (author), van Baak, M. (author), Draaijer, A. (author), de Wasch, K. (author), van de Wiele, M. (author), van Hende, J.V. (author), Courtheyn, D. (author), de Brabander, H. (author), TNO Kwaliteit van Leven (author)Zilpaterol is a new powerful beta-agonist, which is officially registered for fattening purposes in cattle in Mexico and South Africa. Its chemical structure is different from the well-known beta-agonists. Therefore, the routinely used screening methods are not likely to be suited for the analysis of zilpaterol. Also gas chromatography-mass...article 2005
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Elliott, C.T. (author), Baxter, G.A. (author), Hewitt, S.A. (author), Arts, C.J.M. (author), van Baak, M. (author), Hellenäs, K.-E. (author), Johannson, A. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)The drug salbutamol (SBL) is a β-agonist that may be used illegally as an animal growth promoter. SBL is also a good example of a drug which is excreted in the form of glucuronides and sulfates. Such metabolites cause complexities in analysing for the presence of drug residues. In the majority of cases a process of deconjugation and sample clean...article 1998