BACTERIAS DEGRADADORAS DE HIDROCARBUROS AISLADAS EN SUELOS CONTAMINADOS DE PETROLEO Aislar cepas bacterianas y. Aislamiento de bacterias potencialmente degradadoras de petróleo en hábitats de ecosistemas costeros en la Bahía de Cartagena, Colombia. Download Citation on ResearchGate | SELECCIÓN DE BACTERIAS CON CAPACIDAD DEGRADADORA DE HIDROCARBUROS Estudio y selección de bacterias aerobias degradadoras de hidrocarburos del petróleo aisladas de costas.
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Introduction to the Archaea by JuanCho Rios on Prezi
Aliphatic hydrocarbons decreased in comparison with those of the abiotic control regarding the non-resolved background cycloalkanes, resins and asphaltenes. They were taxonomically identified as members of the Bacillus, Alcaligenes, Pseudomonas, Acinetobacter, Marinomonas, Kurthia and Azotobacter genera. Bioremediation potential of terrestrial fuel spills. Biodegradation of petroleum hydrocarbons by psychrotrophic Pseudomonas strains possessing both alkane alk and naphthalene nah catabolic pathways.
Mechanisms for solvent tolerance in bacteria. Bacterias marinas con capacidad antimicrobiana aisladas de moluscos bivalvos en cultivos.
BACTERIAS DEGRADADORAS DE HIDROCARBUROS by Mirelly Katherine Diaz Gamarra on Prezi
Universidad de Oriente; Microbiol Mol Biol Rev. Phenotypic characterization of the strains The strains were characterized phenotypically using previously described morphological, physiological and biochemical tests , using previously defined criteria to describe culture characteristics .
Simultaneous degradation of atrazine and phenol by Pseudomonas sp. No statistically significant differences were found for this parameter among the examined strains, although the increased proportion of carboxyl and hydroxyl groups demonstrates the presence of biological oxidation processes.
Recent advances in petroleum microbiology. Impact of irradiation and polycyclic aromatic hydrocarbon spiking on microbial populations in marine sediment for future aging and biodegradability studies. Bacterial metabolism is readjusted as culture ages and less complex substrates saturated linear alkanes and low molecular weight aromatic compounds are exhausted, shifting towards the synthesis of enzyme complexes geared towards the degradation of more complex molecules.
Microbial diversity in a hydrocarbon- and chlorinated-solvent-contaminated aquifer undergoing intrinsic bioremediation.
At the end, 18 strains representing each unique combination of these parameters were chosen to peroleo subjected to the selection process. Enhanced biodegradation of Casablanca crude oil by a microbial consortium in presence petrolo a rhamnolipid produced by Pseudomonas aeruginosa AT The degradation potential exhibited by these new isolates warrants further studies on their possible application to decontaminate coastal environments affected by oil spills.
They arrived to the laboratory for further processing within the first 24 h after their collection. A microbiological survey of the western Cuban continental shelf found this species in both northern and southern locations .
These microorganisms can be found not only in soil and water samples, but in clinical specimens, occasionally.
F10S1 and Bacillus sp. Publications reporting the presence of this genus in hydrocarbon-contaminated ecosystems and describing its hydrocarbon-degrading abilities have appeared in the literature from the early nineties , although its numbers have increased as of late [19, 24, 25, 31, 32].
Isolation and characterization of polycyclic aromatic hydrocarbon-degrading bacteria associated with the rhizosphere of salt marsh plants. The host enzyme machinery must, therefore, have adapted to fluctuations in the levels of these different compounds.
SPE International conference on health, safety, and environment in oil and gas exploration and production, JuneCaracas, Venezuela. Each strain was assayed in triplicate. In both protocols the marine bacteria isolation plates were periodically examined after 24 h of growth under a stereoscope, streaking onto separate plates all the colonies appearing during the seven day incubation defradadoras.
Comparative study of five polycyclic aromatic hydrocarbon degrading bacterial strains isolated from contaminated soils. Some species of this genus have been isolated from marine environments contaminated with hydrocarbons [5, 17, 28].
Most degradadroas on bioremediation technology has focused therefore on aerobic heterotrophic bacteria, due not only to the taxonomic diversity of hydrocarbon-degrading representatives from this group, but to their ability to use xenobiotic compounds as carbon source in pure cultures .
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Taxonomic and metabolic variety notwithstanding, individual species seldom have the complete enzymatic toolset required to completely degrade the main organic compounds contaminating the ecosystem at any given time, and thus biodegradation usually proceeds through the concerted action of mixed populations or degraaddoras consortia.
Biosurfactant-enhanced degradation of residual hydrocarbons from slip bilge wastes. Finer taxonomic classification to the level of species was not pursued since, despite the existence of taxonomic identification schemes for microorganisms from marine ecosystems [12, 15], successfully identifying recently described genera and species of marine bacteria requires the application of molecular methods .
Effectiveness of the natural bacterial flora, bioestimulation and bioaumentation on the bioremediation of a hydrocarbon contaminated Antartic soil.
Strain F10S1 lowered the concentration of all fractions in comparison with the control. Spill Sci technol Bull.
Enrichment, isolation, and phylogenetic identification of polycyclic aromatic hydrocarbon-degrading bacteria from Elizabeth River sediments. No petropeo with backbones shorter than 12 carbon atoms were detected in these samples.
Received in October, Had hydrocarbon composition been determined at that point, we would have most likely found practically identical levels of asphaltenes and resins in crudes treated with the strains under examination and in their controls, dwgradadoras decreased levels of saturated hydrocarbons in the former, and only a small drop in the concentration of aromatic hydrocarbons, since the bulk of their degradation takes place after 21 days. Pure cultures of these strains were further used in crude oil biodegradability assays.
Taxonomy of aerobic marine eubacteria. Molecular analysis of surfactant-driven microbial population shifts in hydrocarbon-contaminated soil.
In addition, other authors have shown that the biotransformation of asphaltenes and resins leads to the ppetroleo of simpler saturated and aromatic derivates, increasing the concentration of these fractions [53, 54]. In addition, it must be noted that synthesis of the enzyme complexes required to degrade the heavier fractions is not induced until lighter fractions have been exhausted, following the principle of maximum cellular economy metabolic regulation.
Description of toluene inhibition of methyl bromide biodegradation in seawater and isolation of a marine toluene oxidizer that degrades methyl bromide. Kurthia is a genus of Gram-positive bacilli described as environmental bacteria, whereas Azotobacter is a typical inhabitant of water bodies and soils. Lastly, the genera Kurthia and Azotobacter were represented each by a single strain.