Untersuchungen zur aktuellen Belastung von Tiermehlen mit Tetracyclinen
2008
Lhafi, S. | Hashem, A. | Zierenberg, B. | Kühne, Michael
In this study, meat meals produced in Germany according to article 19 of regulation EC 1774/2002 (“Placing on the market and export of processed animal protein and other processed products that could be used as feed material”) were analysed qualitatively and quantitatively for tetracyclines using LC-ESI-MS-MS. A total of 108 samples was analysed: 18 bone meals, 16 greave meals, 15 poultry meals, 10 poultry meat meals and 49 meat and bone meal samples.Tetracycline derivatives were found in all analysed samples. Oxytetracycline and tetracycline were found in 108 samples, chlortetracycline was detected in 91 of 108 samples. The highest total tetracycline content was 828.1 μg/kg in bone meals, 317.1 μg/kg in greave meals, 606.9 μg/kg in poultry meals, 267.1 μg/kg in poultry meat meals and 1524.7 μg/kg in meat and bone meals, respectively.The results of this study showed that the compulsory heating step actually used in processing plants does not result in a degradation of tetracyclines. From these results it does not seem possible to produce tetracycline free animal meals from contaminated raw materials. Further, the possible implications of the findings are discussed.
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