Biodesulfurization of alkylated forms of dibenzothiophene and benzothiophene by Sphingomonas subarctica T7b

Sphingomonas subarctica T7b was isolated from soil in Toyotomi, Hokkaido, Japan as an organism capable of desulfurizing aromatic hydrocarbons in light gas oil (LGO) through enrichment culture. S. subarctica T7b could grow on mineral salt sulfur-free (MSSF) medium with the n-tetradecane oil phase con...

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Bibliographic Details
Published in:Journal of bioscience and bioengineering 2006-04, Vol.101 (4), p.322-327
Main Authors: Gunam, Ida Bagus Wayan, Yaku, Yosuke, Hirano, Makoto, Yamamura, Kenta, Tomita, Fusao, Sone, Teruo, Asano, Kozo
Format: Article
Language:English
Subjects:
Alkanes - chemistry
alkyl benzothiophene
alkyl dibenzothiophene
AROMATIC HYDROCARBONS
BACTERIA
BIODEGRADACION
BIODEGRADATION
Biodegradation, Environmental
Biological and medical sciences
Biotechnology
Biotechnology - methods
COMPOSE ORGANOSOUFRE
COMPUESTO ORGANICO DEL AZUFRE
desulfurization
dibenzothiophene
Fundamental and applied biological sciences. Psychology
HIDROCARBUROS AROMATICOS
Hydrocarbons - chemistry
HYDROCARBURE AROMATIQUE
light gas oil
ORGANOSULPHUR COMPOUNDS
Phenol - chemistry
Soil Microbiology
Sphingomonas - enzymology
Sphingomonas - metabolism
Sphingomonas subarctica
Substrate Specificity
Sulfur - chemistry
Thiophenes - chemistry
Time Factors
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Summary:Sphingomonas subarctica T7b was isolated from soil in Toyotomi, Hokkaido, Japan as an organism capable of desulfurizing aromatic hydrocarbons in light gas oil (LGO) through enrichment culture. S. subarctica T7b could grow on mineral salt sulfur-free (MSSF) medium with the n-tetradecane oil phase containing dibenzothiophene (DBT), alkyl dibenzothiophenes (alkyl DBTs) or alkyl benzothiophenes (alkyl BTs) as the sole sulfur source and desulfurize these compounds, but could not utilize the tetradecane as a carbon source. This is the first report of a gram-negative bacterium which can desulfurize 4,6-dibutyl DBT and 4,6-dipentyl DBT. The desulfurized product of DBT produced by this strain was 2-hydroxybiphenyl, as in the case of other DBT-desulfurizing bacteria. S. subarctica T7b could desulfurize LGO and the sulfur content was decreased to 41% within 36 h.
ISSN:1389-1723
1347-4421
DOI:10.1263/jbb.101.322