期刊
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
卷 34, 期 2, 页码 345-350出版社
ELSEVIER
DOI: 10.1016/j.etap.2012.05.011
关键词
Antibiotics; Immobilization; GSTs; Degradation; Microorganisms
The degradation of several antibiotics (tetracycline, sulfathiazole, ampicillin) was performed with immobilized bacterial cells containing the glutathione S-transferases (GSTs). Antibiotics in animal feed contaminated wastewater usually inhibit the growth of microorganisms that treat the wastewater, so a bio-friendly treatment method is required. Therefore, we have shown that the inhibitory effects of antibiotics on bacteria were reduced by microorganisms containing detoxifying enzyme GSTs by using a cell immobilizing method in a bioreactor. The initial concentrations of tetracycline, sulfathiazole and ampicillin were 100 mg/L, 100 mg/L and 50 mg/L respectively, which are typical of the range detected in pig feed in Korea. In the results, we observed the removal efficiency of tetracycline to be almost 70% with Staphylococcus epidermidis in the bioreactor, suggesting that this method of antibiotic removal is worthy of further study. (C) 2012 Elsevier B.V. All rights reserved.
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