Oxidation of solid paraffin (C11−40) byPseudomonas aeruginosa MGP-1

Salgado-Brito, Rosa; Neria, M.Isabel; Mesta-Howard, A. M.; Cedillo, Francisco Díaz; Wang, En Tao

doi:10.1007/bf03175067

Cited by 7 publications

(3 citation statements)

References 47 publications

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“…As far as we know, there are no previous works exploring the differences in the bacterial communities induced by this set of n-alkanes. However, it is important to note that in a study where the degradation capacity of n-alkanes was studied using a bacterial strain isolated from contaminated soil (Pseudomonas aeruginosa MGP-1), Salgado-Brito et al (2007) reported that the growth rate and degradation capacity of this strain were optimal with the n-alkane of C20, and decreased when the length of the carbon chain was larger o shorter. These authors clearly show that growth rate of the MGP-1 strain was notoriously low with C11 and gradually increases with C12, C13 and C14.…”

Section: Discussionmentioning

confidence: 99%

Hydrocarbon-contaminated Antarctic soil: changes in bacterial community structure during the progress of enrichment cultures with different n-alkanes as substrate

et al. 2019

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Section: Discussionmentioning

confidence: 99%

Hydrocarbon-contaminated Antarctic soil: changes in bacterial community structure during the progress of enrichment cultures with different n-alkanes as substrate

et al. 2019

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“…Many studies showed that Pseudomonas are capable of degrading n-alkanes longer than C 20 (up to C 40 ) (Gunasekera et al 2013;Liu et al 2014;SalgadoBrito et al 2007;Yuste et al 2000). Salgado-Brito et al measured the degradation kinetics of Pseudomonas aeruginosa MGP using paraffin (C 11 -C 40 ) as sole carbon source (Salgado-Brito et al 2007). They found that this strain degraded eicosane (C-20) more efficiently than other n-alkanes, removing 60 % within 16 day.…”

Section: Changes In Oil Concentration and Composition During Bioaugmementioning

confidence: 97%

“…These three genera contained many hydrocarbon degraders that were commonly found in terrestrial environments. Genus Pseudomonas includes many species that are commonly associated with the biodegradation of petroleum hydrocarbons (Lee et al 2010;Salgado-Brito et al 2007;Whyte et al 1997). Genus Nocardia are aerobic and Gram-positive actinomycetes that are widely distributed in aquatic and terrestrial environments.…”

Section: Isolation and Characterization Of Oil-degrading Strainsmentioning

confidence: 98%

Isolation and Characterization of Oil-Degrading Microorganisms for Bench-Scale Evaluations of Autochthonous Bioaugmentation for Soil Remediation

Yan

et al. 2015

Water Air Soil Pollut

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Autochthonous bioaugmentation (uses microorganisms indigenous to the target sites) is proposed as a promising remediation technique that can overcome ecological barriers which usually impede successful applications of conventional bioaugmentation remedy. This study aimed to select and characterize strains for bench-scale evaluations of autochthonous bioaugmentation for remediation for oil-contaminated soil. Twentyone oil-degrading stains were isolated from contaminated soil in an oil refinery plant in China. Six strains with high oil-degradation efficiencies were chosen for further morphological and biochemical characterizations, and their biosurfactant production potentials were measured. All six strains were able to produce biosurfactant, and the strain with the highest oil-degradation efficiency had the highest biosurfactant production potential, indicating the important role that biosurfactant played in accelerating biodegradation. Then we prepared the bioaugmentation consortium by mixing equal proportions of these six strains. Microcosm experiments showed that, after 84 days of incubation, the residual oil concentration in bioaugmented microcosms decreased by 63.2± 20.1 % while the residual oil concentration in the control only decreased by 21.3±5.2 %. Gas chromatographymass spectrum analysis further corroborated that 84 days of bioaugmentation significantly reduced the total number of contaminants and changed contaminant composition (resulting in higher relative abundance of shortchain alkanes and lower relative abundance of longchain alkanes). All of these evidence showed that autochthonous bioaugmentation was an effective remediation technology, and the microbial consortium we isolated was an excellent bioaugmentation agent for crude oil-contaminated site.

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Isolation and characterization of different bacterial strains for bioremediation of n-alkanes and polycyclic aromatic hydrocarbons

M'rassi

Bensalah

Gury

et al. 2015

Environ Sci Pollut Res

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Crude oil is a common environmental pollutant composed of a large number of both aromatic and aliphatic hydrocarbons. Biodegradation is carried out by microbial communities that are important in determining the fate of pollutants in the environment. The intrinsic biodegradability of the hydrocarbons and the distribution in the environment of competent degrading microorganisms are crucial information for the implementation of bioremediation processes. In the present study, the biodegradation capacities of various bacteria toward aliphatic and aromatic hydrocarbons were determined. The purpose of the study was to isolate and characterize hydrocarbon-degrading bacteria from contaminated soil of a refinery in Arzew, Algeria. A collection of 150 bacterial strains was obtained; the bacterial isolates were identified by 16S rRNA gene sequencing and their ability to degrade hydrocarbon compounds characterized. The isolated strains were mainly affiliated to the Gamma-Proteobacteria class. Among them, Pseudomonas spp. had the ability to metabolize high molecular weight hydrocarbon compounds such as pristane (C19) at 35.11 % by strain LGM22 and benzo[a] pyrene (C20) at 33.93 % by strain LGM11. Some strains were able to grow on all the hydrocarbons tested including octadecane, squalene, phenanthrene, and pyrene. Some strains were specialized degrading only few substrates. In contrast, the strain LGM2 designated as Pseudomonas sp. was found able to degrade both linear and branched alkanes as well as low and high poly-aromatic hydrocarbons (PAHs). The alkB gene involved in alkane degradation was detected in LGM2 and other Pseudomonas-related isolates. The capabilities of the isolated bacterial strains to degrade alkanes and PAHs should be of great practical significance in bioremediation of oil-contaminated environments.

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Oxidation of solid paraffin (C11−40) byPseudomonas aeruginosa MGP-1

Cited by 7 publications

References 47 publications

Hydrocarbon-contaminated Antarctic soil: changes in bacterial community structure during the progress of enrichment cultures with different n-alkanes as substrate

Hydrocarbon-contaminated Antarctic soil: changes in bacterial community structure during the progress of enrichment cultures with different n-alkanes as substrate

Isolation and Characterization of Oil-Degrading Microorganisms for Bench-Scale Evaluations of Autochthonous Bioaugmentation for Soil Remediation

Isolation and characterization of different bacterial strains for bioremediation of n-alkanes and polycyclic aromatic hydrocarbons

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