Triclosan affects the microbial community in simulated sewage-drain-field soil and slows down xenobiotic degradation
| Autor: | Anders Priemé, Hanne Svenningsen, Anders R. Johnsen, Trine Henriksen |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Health
Toxicology and Mutagenesis Colony Count Microbial Sewage Ibuprofen Toxicology Waste Disposal Fluid Xenobiotics chemistry.chemical_compound Organic chemistry Soil Pollutants Soil Microbiology Antibacterial agent biology Bacteria business.industry Pseudomonas General Medicine Mineralization (soil science) Biodegradation biology.organism_classification Pollution Triclosan Biodegradation Environmental chemistry Microbial population biology Environmental chemistry Anti-Infective Agents Local Xenobiotic business |
| Zdroj: | Environmental pollution (Barking, Essex : 1987). 159(6) |
| ISSN: | 1873-6424 |
| Popis: | Effects of the common antibacterial agent triclosan on microbial communities and degradation ofdomestic xenobiotics were studied in simulated sewage-drain-field soil. Cultivable microbial populationsdecreased 22-fold in the presence of 4 mg kg 1 of triclosan, and triclosan-resistant Pseudomonas strainswere strongly enriched. Exposure to triclosan also changed the general metabolic profile (Ecoplatesubstrate profiling) and the general profile (T-RFLP) of the microbial community. Triclosan degradationwas slow at all concentrations tested (0.33e81 mg kg 1 ) during 50-days of incubation. Mineralizationexperiments ( 14 C-tracers) and chemical analyses (LCeMS/MS) showed that the persistence of a linearalkylbenzene sulfonate (LAS) and a common analgesic (ibuprofen) increased with increasing triclosanconcentrations (0.16e100 mg kg 1 ). The largest effect was seen for LAS mineralization which wasseverely reduced by 0.16 mg kg 1 of triclosan. Our findings indicate that environmentally realisticconcentrations of triclosan may affect the efficiency of biodegradation in percolation systems. 2011 Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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