alexa Biodegradation pathways of chloroanilines by Acinetobacter baylyi strain GFJ2.
Environmental Sciences

Environmental Sciences

Journal of Bioremediation & Biodegradation

Author(s): Hongsawat P, Vangnai AS

Abstract Share this page

Abstract The Acinetobacter baylyi strain GFJ2 was isolated from soil that was potentially contaminated with herbicides. It exhibited complete biodegradations of 4-chlroaniline (4CA) and 3,4-dichloroaniline (34DCA), a wide range of monohalogenated anilines (chloro-, bromo-, and fluoro-anilines) and other dichloroanilines. An in-depth investigation of the biodegradation pathway revealed that a dechlorination reaction may be involved in 34DCA biodegradation, which forms 4CA as the first intermediate. By detecting the transient intermediates and characterizing the relevant enzymes, this investigation is also the first to report that A. baylyi strain GFJ2 has two distinct 4CA degradation pathways that yield 4-chlorocatechol (4CC) and aniline as the first intermediate in each route, which are further metabolized through an ortho-cleavage pathway. Analysis of biodegradation kinetics analysis illustrated that A. baylyi GFJ2 utilized aniline and 4CC at significantly slower rates than it used 4CA, suggesting that the transformations of aniline and 4CC were probably the limiting steps during 4CA biodegradation. Our results suggest the potential application of A. baylyi strain GFJ2 in bioremediation and waste treatment, and the kinetic data provide the insights into the degradation mechanism, dynamics and possible limitations of the biodegradation which include substrate and product inhibitions. Copyright © 2010 Elsevier B.V. All rights reserved. This article was published in J Hazard Mater and referenced in Journal of Bioremediation & Biodegradation

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

  • 6th World Congress on Biofuels and Bioenergy
    Sep 5-6, 2017 London, UK
  • 6th World Congress on Biopolymers
    September 7-9, 2017 Paris, France
  • 7th International Conference and Exhibition on Biopolymers and Bioplastics
    October 19-21, 2017 San Francisco, USA
Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version