Journal article
Benzo[a]pyrene degradation by Sphingomonas yanoikuyae JAR02
Environmental pollution (1987), Vol.151(3), pp.669-677
02/2008
DOI: 10.1016/j.envpol.2007.02.018
PMID: 17482734
Abstract
Batch experiments were conducted to characterize the degradation of benzo[a]pyrene, a representative high molecular weight (HMW) polycyclic aromatic hydrocarbon (PAH), by Sphingomonas yanoikuyae JAR02. Concentrations up to the solubility limit (1.2 microg l(-1)) of benzo[a]pyrene were completely removed from solution within 20 h when the bacterium was grown on salicylate. Additional experiments with [(14)C]7-benzo[a]pyrene demonstrated 3.8% mineralization over 7 days when salicylate was present is solution, and one major radio-labeled metabolite was observed that accounted for approximately 10% of the initial radio-label. Further characterization of the radio-labeled metabolite using HPLC/MS and HPLC/MS/MS identified radio-labeled pyrene-8-hydroxy-7-carboxylic acid and unlabeled pyrene-7-hydroxy-8-carboxylic acid as novel ring-cleavage metabolites, and a benzo[a]pyrene degradation pathway was proposed. Results indicate that biostimulation of HMW PAH degradation by salicylate, a water-soluble, non-toxic substrate, has significant potential for in situ bioremediation.
Details
- Title: Subtitle
- Benzo[a]pyrene degradation by Sphingomonas yanoikuyae JAR02
- Creators
- Jeremy A Rentz - Civil and Environmental Engineering, University of Iowa, Iowa City, IA 52242, USA. rentz@wsu.eduPedro J J AlvarezJerald L Schnoor
- Resource Type
- Journal article
- Publication Details
- Environmental pollution (1987), Vol.151(3), pp.669-677
- DOI
- 10.1016/j.envpol.2007.02.018
- PMID
- 17482734
- NLM abbreviation
- Environ Pollut
- ISSN
- 0269-7491
- eISSN
- 1873-6424
- Publisher
- England
- Language
- English
- Date published
- 02/2008
- Academic Unit
- Civil and Environmental Engineering; Occupational and Environmental Health
- Record Identifier
- 9983997427102771
Metrics
37 Record Views