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HYDROCARBONOCLASTIC BACTERIA PDF

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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Please review our privacy policy. They always grow in environment of high carbon and low nitrogen content which is ideally created by hydrocarbon pollution. Views Read Edit View history. Bacterria probable reason why MCC was more effective than the pure isolates might be as a result of the synergistic effect of enzymatic reactions from various bacteria isolates on the refinery pollutant or the composite effect bactsria enzymes of the five isolates acting more on metabolites than enzymes of individual isolates.

Consortia of HCB can have broad spectrum hydrocarbonoclastic potential than individual strains.

National Center for Biotechnology InformationU. One hundred different species of oil-utilizing bacteria that have been deposited in our private culture collection were used in this study. They have been exploited for their biodegradation potential and have been used successfully for cleanup of oil contaminated soils bacteriaa aquatic systems. Identities of epilithic hydrocarbon-utilizing diazotrophic bacteria from the Arabian Gulf coasts, and their potential for oil bioremediation bacheria nitrogen supplementation.

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Crude oils are composed of an array of chemical compounds, minor constituents, and trace metals. A total of five hydrocarbonoclastic bacteria were isolated from the petroleum refinery effluent. Results and Discussion Growth on nitrogen-free medium and possession of nifH genes Eighty-two out of the hydrocarbonoclastic bacterial species tested were capable of growing on the NaNO 3 -free mineral medium with oil as the sole source of carbon and energy.

This result corroborates with the report of Kaplan and Kitts Marinobacterium jannaschii and Oleispira antarctica are psychrophilic and halotolerant HCBs. Journal List Microbes Environ v. Join as an Editorial Member. One important result of the present study is that the nifH genes were detected unequivocally in all the environmentally predominant hydrocarbonoclastic bacterial species tested. Often in the process of degrading a pollutant, a microbe can create intermediates or byproducts that are also harmful, sometimes even more harmful than the original substrate.

Petroleum microbiology – Wikipedia

The highest emulsification hysrocarbonoclastic was detected in Pseudomonas geniculata with Degradation and removal of hydrocarbon pollutants from the environment via HCB is cheap, ecofriendly and very promising strategy.

HCB from different habitats: Dion P, Nautiyal CS, editors. Hydrocarbons are water insoluble and remain adsorbed to clay, humus particles and debris. Degradation of gasoline aromatic hydrocarbons by two N 2 -fixing soil bacteria. Other important characteristics of HCB are that they have very small genome, few rRNA operons and cytoplasm contains very small number of proteins.

Trending Articles Receiving maximum views in the last few days. This was the largest oil spill of all time and indigenous petroleum microorganisms played a major role in petroleum degradation and cleanup. The occurrence, in all samples, of two gene bands instead of only one Fig.

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Quantitative studies on marine biodegradation of oil. The vegetation-poor desert soil and Arabian Gulf water body are also poor in nitrogenous compounds. Isolation of Hydrocarbonoclastic Bacteria 2. These species had been isolated from various pristine and oil-polluted Gulf habitats, including desert soil, the rhizospheres and phyllospheres of wild and cultivated plants, seawater, hypersaline areas, and air dust, on a mineral medium 24 with oil vapor as hydrocarbonoclasfic sole source of carbon and energy.

Crude oil-consumption by bacterial species in the presence and absence of NaNO 3 in the medium and nitrogen gas in the culture top space. A total of 36 distinct ITS haplotypes were detected on agarose matrix. We do not own any responsibility for correctness or authenticity of the information presented in this article, or any loss or injury resulting from it.

Hydrocarbon degradation in marine habitat is largely dependent on temperature, salinity, depth, latitude and redox potential. They are rarely present in unpolluted areas! Some bacteria contain catabolic plasmids that can transform hydrocarbon pollutant into simple organic molecule; plasmid genes encode for enzymes for ring cleavage and oxidation reactions.

The 3 species, Sphingomonas dokdonensisMarinobacter hydrocarbonoclasticusand Pseudomonas xanthomonas in Table 1 were not subjected to this analysis and, therefore, were absent in Table 2. Each flask was inoculated with 0. Therefore, we examined the most frequently detected species in desert soil and seawater in Kuwait.

Environ Sci Pollut Res.

Microbacterium jejuense Mycobacterium chlorophenolicum Alcanivorax dieselolei.

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