BROWSE

Related Researcher

Author's Photo

Lee, Sung Kuk
Synthetic Biology & Metabolic Engineering Laboratory
Research Interests
  • Biofuels production
  • Gene discovery
  • Protein engineering
  • Development of gene expression systems
  • Metabolic pathway regulation
  • Metabolic pathway optimization using functional genomics
  • Synthetic biology
  • Development of biosensors

ITEM VIEW & DOWNLOAD

Substrate utilization patterns during BTEX biodegradation by an o-xylene-degrading bacterium Ralstonia sp PHS1

Cited 8 times inthomson ciCited 9 times inthomson ci
Title
Substrate utilization patterns during BTEX biodegradation by an o-xylene-degrading bacterium Ralstonia sp PHS1
Author
Lee, Sung KukLee, SB
Keywords
Biodegradation; BTEX; O-xylene; Ralstonia sp.; Substrate interactions
Issue Date
2002-12
Publisher
KOREAN SOC MICROBIOLOGY & BIOTECHNOLOGY
Citation
JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY, v.12, no.6, pp.909 - 915
Abstract
The biodegradation of BTEX components (benzene, toluene, ethylbenzene, o-xylene, m-xylene, and p-xylene) individually and in mixtures was investigated using the o-xylene-degrading thermo-tolerant bacterium Ralstonia sp. strain PHS1, which utilizes benzene, toluene, ethylbenzene, or o-xylene as its sole carbon source. The results showed that as a single substrate for growth, benzene was superior to both toluene and ethylbenzene. While growth inhibition was severe at higher o-xylene concentrations, no inhibition was observed (up to 100 mg 1-1) with ethylbenzene. In mixtures of BTEX compounds, the PHS1 culture was shown to degrade all six BTEX components and the degradation rates were in the order of benzene, toluene, o-xylene, ethylbenzene, and m- and p-xylene. m-Xylene and p-xylene were found to be co-metabolized by this microorganism in the presence of the growth-supporting BTEX compounds. In binary mixtures containing the growth substrates (benzene, toluene, ethylbenzene, and o-xylene), PHS1 degraded each BTEX compound faster when it was alone than when it was a component of a BTEX mixture, although the degree of inhibition varied according to the substrates in the mixtures. p-Xylene was shown to be the most potent inhibitor of BTEX biodegradation in binary mixtures. On the other hand, the degradation rates of the non-growth substrates (m-xylene and p-xylene) were significantly enhanced by the addition of growth substrates. The substrate utilization patterns between PHS1 and other microorganisms were also examined.
URI
Go to Link
ISSN
1017-7825
Appears in Collections:
ECHE_Journal Papers
Files in This Item:
2-s2.0-0037003635.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU