Incorporation of veterinary antibiotics into crops from manured soil
Incorporation of veterinary antibiotics into crops from manured soil
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发表时间：
2007
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通讯作者：
M. Grote;C. Schwake-Anduschus;R. Michel;H. Stevens;W. Heyser;G. Langenkämper;T. Betsche;M. Freitag
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作者：
M. Grote;C. Schwake-Anduschus;R. Michel;H. Stevens;W. Heyser;G. Langenkämper;T. Betsche;M. Freitag
摘要在农业生产条件下，在施用有机肥的土壤上栽培冬小麦。粪液来源于用金霉素（CTC）、磺胺嘧啶（SFD）和甲氧苄啶（TMP）控制的猪。在8个月的储存过程中，粪便中CTC和SFD的初始浓度下降了50 - 60%。这种肥料被用作肥料，因此大量的抗生素被施用到土壤中。第2次施用泥浆后，土壤中的抗生素回收率达到峰值（SFD：90 µg/kg dw，CTC化合物：20微克/千克干重），并降至较低水平， 到5个月。小麦生长在这片土地上。CTC和SFD很容易被根系吸收，在植株内转移到茎和叶中，CTC甚至进入小麦籽粒（~ 100%）。 µg/kg fw）。未标记和 使用水培生长的小麦、羊肉和胡萝卜进行的H标记抗生素研究证实了完整的植物可以通过根部吸收大量抗生素的结果。本研究揭示了动物源性食物暴露于兽用抗生素的新途径。
Abstract Under farming conditions, winter wheat was cultivated on manure-fertilised soil. The liquid manure originated from pigs medicated under control with chlortetracycline (CTC), sulfadiazine (SFD) and trimethoprim (TMP). Dur-ing 8 months of storage the initial concentration of CTC and SFD in the manure decreased by 50 - 60 %. This ma-nure was used as a fertiliser, thereby remarkable amounts of antibiotics were administered to soil. Antibiotic recov-ery rates from soil peaked after the 2 nd slurry administra-tion (SFD: 90 µg/kg dw, CTC-compounds: 20 µg/kg dw) in the plough layer (0 - 25 cm) and dropped to a low level within to 5 months. Wheat was grown on this soil. CTC and SFD were readily taken up by the roots, translocated within the plants into stems and leaves; CTC even into the wheat grain (~ µg/kg fw) after twofold slurry application in spring. Experiments with non-labelled and H-labelled antibiotics using hydroponically grown wheat, lamb’s let-tuce and carrots corroborate the result that intact plants can take up substantial amounts of antibiotics by the roots. Our study has revealed a novel way of human exposure to vet-erinary antibiotics by plant derived food.