Specialized hydrocarbonoclastic bacteria (SHCB), which use limited carbon sources with a preference for petroleum hydrocarbons, were found. Petroleum microbiology is a branch of microbiology that deals with the study of microorganisms that can metabolize or alter crude or refined petroleum products. These microorganisms, also called hydrocarbonoclastic microorganisms, . ” Most Hydrocarbonoclastic Bacteria in the Total Environment are Diazotrophic, which. The marine hydrocarbonoclastic bacterium Alcanivorax borkumensis is able to degrade mixtures of n-alkanes as they occur in marine oil spills. However.

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Bacterial biosensor systems offer the potential for cheap, robust detection systems that are selective and highly sensitive.

Contact and attachment to the hydrocarbon molecule is thought to be pre-requisite step for oil degradation. Culture-independent approach DGGE showed high diversity in the microbial community in all the studied samples with a clear correlation with the hydrocarbon pollution hjdrocarbonoclastic.

Petroleum microbiology – Wikipedia

Obligate oil-degrading Marine bacteria. Environ Sci Pollut Res. Most of the HCB are obligate hydrocarbonoclastic and occasionally utilize non-hydrocarbon substrate like acetate and pyruvate. Bacterial production of biosurfactants or bioemulsifiers also determines their oil degradation potential. Microbiological degradation of hydrocarbons in the environment. Obligate marine hydrocarbon bacteria genera include Marinobacter, Marinobacterium, Alcanivorax, Neptunomonas, Thalassolituus, Cycloclasticus, Oleispira and Oleiphilus.


All articles on this website are for general information bactera and is not a professional or experts advice. Study of nitrogen fixation in microbial communities of oil contaminated marine sediment microcosms.

Band I and Band II for every species were cut, amplified, and sequenced, and the sequences obtained were then compared with the nearest GenBank matches see Table 2. They are heterotrophic and can grow efficiently in presence of aliphatic and aromatic hydrocarbons. Although, maximum efficacy were observed using gram positive bacteria which is bacterla to our report of gram negative bacteria. All five bacterial isolates manifested no lag phase of growth.

Three parallel replicates were run for each reading and the mean and standard deviation values were calculated. They synthesize extracellular lipids like polyhydroxy alkanoates and wax esters when they are grown on sole carbon source like hexadecane under phosphorus and nitrogen limiting conditions. Not all hydrocarbonoclasic microbes depend on hydrocarbons to hydrcarbonoclastic, but instead may use petroleum products as alternative carbon and energy sources.

Petroleum microbiology

Bacterial growth was measured in liquid mineral medium 24 aliquots containing NaNO 3 and aliquots lacking this nitrogen source. Interest in this hydrocarboncolastic is growing due to the increasing role of bioremediation in oil spill cleanup. This finding is similar to the study carried out by Kafilzadeh et al. Single HCB may take months to degrade hydrocarbon but consortia requires only few days to accomplish the task.


Author information Article notes Copyright and License information Disclaimer. Isolation of Hydrocarbonoclastic Bacteria 2. Five possible hydrocarbonoclastic bacteria from the refinery effluent were identified morphologically and biochemically as Pseudomonas aeruginosa, Proteus vulgarisKlebsiella pneumoniae, Serretia marcescens and Streptomyces sp.

Hydrocarbons are compounds whose structures are made up of hydrogen and carbon atoms. Join as an Editor-in-Chief. The novelty of this study is not only related to its methodology, but also to its major findings.

All of these species tested positive for nitrogenase using the acetylene reduction reaction. Society of Petroleum Engineers. Therefore, we examined the most frequently detected species in desert soil and seawater in Kuwait. From Wikipedia, the free encyclopedia. Some biosurfactants have low critical micelle concentrations CMCsa property which increases the apparent solubility of hydrocarbons by sequestering hydrophobic molecules into the centres of micelles.

Bioremediation, Hydrocarbonoclastic, Bacteria, Refinery Effluent.

Badteria criteria have been used to confirm diazotrophic potential rather than actual in situ nitrogen fixation during growth on hydrocarbon substrates as sources of carbon and energy.