Degradation of dibenzothiophene by Brevibacterium sp.DO |
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Authors: | Manfred van Afferden Sigrid Schacht Jürgen Klein Hans G Trüper |
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Institution: | (1) DMT-Gesellschaft für Forschung und Prüfung mbH, Franz-Fischer-Weg 61, D-4300 Essen 13, Federal Republic of Germany;(2) Institut für Mikrobiologie der Rheinischen Friedrich-Wilhelms-Universität, Meckenheimer Allee 168, D-5300 Bonn 1, Federal Republic of Germany |
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Abstract: | Dibenzothiophene, a polycyclic aromatic sulfur heterocycle, represents as a model compound the organic sulfur integrated in the macromolecular coal matrix. A pure culture of a Brevibacterium species was isolated, which is able to use dibenzothiophene as sole source of carbon, sulfur and energy for growth. During dibenzothiophene utilization sulfite was released in a stoichiometrical amount and was further oxidized to sulfate. Three metabolites of dibenzothiophene degradation were isolated and identified as dibenzothiophene-5-oxide, dibenzothiophene-5-dioxide and benzoate by cochromatography, UV spectroscopy and gas chromatographymass spectrometry analyses. Based on the identified metabolites a pathway for the degradation of dibenzothiophene by Brevibacterium sp. DO is proposed.Non-standard abbreviations DBT
dibenzothiophene
- PASH
polycyclic aromatic sulfur heterocycle
- PAH
polycyclic aromatic hydrocarbons
- GC-MS
gas chromatography-mass spectrometry
- HPLC
high pressure liquid chromatography
- IC
ion chromatography |
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Keywords: | Dibenzothiophene Desulfurization Mineralization Degradation pathway Brevibacterium sp |
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