Triclosan susceptibility and co-metabolism – a comparison for three aerobic pollutant-degrading bacteria
SCIE
SCOPUS
- Title
- Triclosan susceptibility and co-metabolism – a comparison for three aerobic pollutant-degrading bacteria
- Authors
- Kim, YM; Murugesan, K; Schmidt, S; Bokare, V; Jeon, JR; Kim, EJ; Chang, YS
- Date Issued
- 2011-02
- Publisher
- ELSEVIER SCI LTD
- Abstract
- The antimicrobial agent triclosan is an emerging and persistent environmental pollutant. This study evaluated the susceptibility and biodegradation potential of triclosan by three bacterial strains (Sphingomonas wittichii RW1, Burkholderia xenovorans LB400 and Sphingomonas sp. PH-07) that are able to degrade aromatic pollutants (dibenzofuran, biphenyl and diphenyl ether, respectively) with structural similarities to triclosan. These strains showed less susceptibility to triclosan when grown in complex and mineral salts media. Biodegradation experiments revealed that only strain PH-07 was able to catabolize triclosan to intermediates that included hydroxylated compounds (monohydroxy-triclosan, and dihydroxy-triclosan) and the ether bond cleavage products (4-chlorophenol and 2,4-dichlorophenol), indicating that the initial dihydroxylation occurred on both aromatic rings of triclosan. Additional growth inhibition tests demonstrated that the main intermediate, 2,4-dichlorophenol, was less toxic to strain PH-07 than was triclosan. Our results indicate that ether bond cleavage might be the primary mechanism of avoiding triclosan toxicity by this strain. (C) 2010 Elsevier Ltd. All rights reserved.
- Keywords
- Antimicrobial; Triclosan; Biodegradation; Sphingomonas sp PH-07; PERSONAL CARE PRODUCTS; WASTE-WATER; ANTIBACTERIAL ACTIVITY; PSEUDOMONAS-PUTIDA; ACTIVATED-SLUDGE; METHYL-TRICLOSAN; TOXICITY; TRANSFORMATION; DEGRADATION; 2,4-DICHLOROPHENOL
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/25094
- DOI
- 10.1016/J.BIORTECH.2010.10.009
- ISSN
- 0960-8524
- Article Type
- Article
- Citation
- BIORESOURCE TECHNOLOGY, vol. 102, no. 3, page. 2206 - 2212, 2011-02
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.