Details

Autor(en) / Beteiligte

• Kim, Myung Hee
• Wang, Ning
• Chu, Kung Hui

Titel

6:2 Fluorotelomer alcohol (6:2 FTOH) biodegradation by multiple microbial species under different physiological conditions

Ist Teil von

• Applied microbiology and biotechnology, 2014-02, Vol.98 (4), p.1831-1840

Ort / Verlag

Berlin/Heidelberg: Springer-Verlag

Erscheinungsjahr

2014

Quelle

MEDLINE

Beschreibungen/Notizen

• Factors affecting microbial aerobic biodegradation of 6:2 fluorotelomer alcohol [6:2 FTOH, F(CF₂)₆CH₂CH₂OH] were investigated using three alkane-degrading bacteria (Mycobacterium vaccae JOB5, Pseudomonas oleovorans, and Pseudomonas butanovora) and one fluoroacetate-degrading bacterium (Pseudomonas fluorescens DSM 8341). In the presence of formate (an external reducing energy source), P. fluorescens DSM 8341 produced perfluorobutanoic acid by removing three –CF₂– groups from 6:2 FTOH. Only P. fluorescens DSM 8341 transformed 5:3 acid to 4:3 acid and perfluoropentanoic acid. However, formate showed no effects on the degradation rates, patterns, or transformation products of 6:2 FTOH by M. vaccae JOB5. When dicyclopropylketone (an alkane hydroxylase inducer) or formate was added, P. oleovorans rapidly degraded 6:2 FTOH and produced PFPeA. In the presence of lactate, P. butanovora degraded 6:2 FTOH slowly but produced diverse metabolites. Our results demonstrate that the extent and mechanisms of 6:2 FTOH biotransformation are affected by strain types, enzyme inducers, and levels of reducing energy.