Degradation of poly aromatic fractions of crude oil and detection of catabolic genes in hydrocarbon-degrading bacteria isolated from Agbabu bitumen sediments in Ondo State
| Autor: | Temitayo O. Olowomofe, Olusola Oluwole, B.I. Aderiye, J. O. Oluyege |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Microbiology (medical)
lcsh:QR1-502 Bacillus cereus AlkB Dyadobacter koreensis medicine.disease_cause Microbiology biodegradation lcsh:Microbiology bioremediation poly aromatic hydrocarbon medicine Food science crude oil chemistry.chemical_classification Light crude oil biology Chemistry fungi biology.organism_classification Hydrocarbon Cereus gas chromatography/mass spectroscopy biology.protein bacteria Micrococcus luteus Bacteria Research Article |
| Zdroj: | AIMS Microbiology AIMS Microbiology, Vol 5, Iss 4, Pp 308-323 (2019) |
| ISSN: | 2471-1888 |
| Popis: | Pollution due to release of Poly aromatic hydrocarbons (PAHs) are a major environmental issue especially in oil producing communities. This study investigates the polyaromatic hydrocarbon degradation potentials of some bacteria: Campylobacter hominis, Bacillus cereus, Dyadobacter koreensis, Pseudomonas aeruginosa and Micrococcus luteus isolated from Agbabu bitumen sediments in Ondo State. The isolates were used singly and in consortium for the degradation of Bonny light crude oil. Concentrations of residual aromatic hydrocarbons in crude oil degraded by these isolates were determined by Gas chromatography/Mass Spectroscopy with flame ionization detector (FID). Detection of catabolic genes (nahH, CatA and AlkB) in the isolates was determined by PCR amplification of their specific primers. The GC-MS analyses showed degradation of poly aromatic hydrocarbons (PAHs) by these isolates. The consortium exhibited the highest PAH reduction (73%) while C. hominis had the least PAH reduction (56%). Dyadobacter koreensis, P. aeruginosa, Micrococcus luteus and B. cereus, displayed 66%, 60%, 59% and 58% PAH reduction respectively. The catabolic gene nahH gene was present in B. cereus, D. koreensis, P. aeruginosa and M. luteus, alkB gene was present in B. cereus, C. hominis, and D. koreensis while CatA was not detected in any of the isolates. The findings of this study affirmed the hydrocarbon-degrading abilities and presence of catabolic genes in these bacteria, these make them potential tools in oil prospecting and cleaning up of hydrocarbon contaminated sites. |
| Databáze: | OpenAIRE |
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