Growth-phase dependent biodesulfurization of Dibenzothiophene by Enterobacter sp. strain NISOC-03
(ندگان)پدیدآور
Papizadeh, MoslemRoayaei Ardakani, MohammadMotamedi, Hosseinنوع مدرک
TextOriginal Research Paper
زبان مدرک
Englishچکیده
Petroleum-polluted soil samples from Ahvaz oilfield were enriched, using three methods to detect microorganisms with different dibenzothiophene degradation capabilities. Strain NISOC-03, a nitrate-reducing, oxidase negative, catalase, citrate, and urease positive, gram negative rod, showed interesting dibenzothiophene desulfurization behavior, designated as Entreobacter sp. strain NISOC-03 based on phenotype and genotype analyses. Gas chromatography, biomass measurement, and Gibb's assay showed that in the presence of benzoate as the carbon source, strain NISOC-03 utilized 64% of 0.8 mM dibenzothiophene, producing 0.27 mM phenyl phenol during the exponential growth phase, though the produced phenyl phenol was degraded in the stationary growth phase. In the presence of glucose as the carbon source, however, strain NISOC-03 metabolized only 19.6% of 0.8 mM dibenzothiophene. Furthermore, replacing glucose with ethanol or glycerol led to the same reduction of the dibenzothiophene utilization. It is thus concluded that the chemistry of the potential carbon source(s) in the culture medium has a significant influence on the quality and the rate of dibenzothiophene metablization, and the enrichment designation has a very vital effect on the biodegradation efficiency of the isolated microorganisms.
کلید واژگان
biodegradationbiodesulfurization
dibenzothiophene
enterobacter
phenyl phenol
شماره نشریه
1تاریخ نشر
2017-01-011395-10-12
ناشر
University of Tehranسازمان پدید آورنده
Microorganisms Bank, Iranian Biological Resource Center (IBRC), Academic Center for Education, Culture and Research (ACECR), Tehran, IranBiotechnology and Biology Research Center, Shahid Chamran University of Ahvaz, Ahvaz, Iran
Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
شاپا
2383-451X2383-4501