| Thermophilic biodesulfurization of naphthothiophene and 2-ethylnaphthothiophene by a dibenzothiophene-desulfurizing bacterium, Mycobacterium phlei WU-F1. | |
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MedLine Citation:
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PMID: 11876417 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Naphtho[2,1-b]thiophene (NTH) is an asymmetric structural isomer of dibenzothiophene (DBT), and NTH derivatives can be detected in diesel oil following hydrodesulfurization treatment, in addition to DBT derivatives. Mycobacterium phlei WU-F1, which possesses high desulfurizing ability toward DBT and its derivatives over a wide temperature range (20-50 degrees C), could also grow at 50 degrees C in a medium with NTH or 2-ethylNTH, an alkylated derivative, as the sole source of sulfur. At 50 degrees C, the resting cells of WU-Fl degraded 67% and 83% of 0.81 mM NTH and 2-ethylNTH, respectively, within 8 h. By GC-MS analysis, 2-ethylNTH-desulfurized metabolites were identified as 2-ethylNTH sulfoxide, 1-(2'-hydroxynaphthyl)-1-butene and 1-naphthyl-2-hydroxy-1-butene, and it was concluded that WU-F1 desulfurized 2-ethylNTH through a sulfur-specific degradation pathway with the selective cleavage of carbon-sulfur bonds. Therefore, M. phlei WU-Fl can effectively desulfurize asymmetric organosulfur compounds, NTH and 2-ethylNTH, as well as symmetric DBT derivatives under high-temperature conditions, and it may be a useful desulfurizing biocatalyst possessing a broad substrate specificity toward organosulfur compounds. |
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Authors:
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T Furuya; K Kirimura; K Kino; S Usami |
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Publication Detail:
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Type: Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Applied microbiology and biotechnology Volume: 58 ISSN: 0175-7598 ISO Abbreviation: Appl. Microbiol. Biotechnol. Publication Date: 2002 Feb |
Date Detail:
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Created Date: 2002-03-05 Completed Date: 2002-09-27 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8406612 Medline TA: Appl Microbiol Biotechnol Country: Germany |
Other Details:
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Languages: eng Pagination: 237-40 Citation Subset: IM |
Affiliation:
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Department of Applied Chemistry, School of Science and Engineering, Waseda University, Tokyo, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Mycobacterium phlei
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growth & development*,
metabolism* Sulfur / metabolism Temperature Thiophenes / metabolism |
| Chemical | |
Reg. No./Substance:
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0/Thiophenes; 132-65-0/dibenzothiophene; 7704-34-9/Sulfur |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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