Effect of addition ofPseudomonas aeruginosa UG2 inocula or biosurfactants on biodegradation of selected hydrocarbons in soil

Jain, Deepali; Lee, Hung; Trevors, J. T.

doi:10.1007/bf01583840

Cited by 98 publications

(51 citation statements)

References 29 publications

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“…The low-molecular-weight biosurfactants (glycolipids, lipopeptides) are more effective in lowering the interfacial and surface tensions, whereas the high-molecular-weight biosurfactants (amphipathic polysaccharides, proteins, lipopolysaccharides, and lipoproteins) are effective stabilizers of oil-in-water emulsions (41,97,149,384,401,525). Many studies have characterized the roles of biosurfactants in biodegradation by observing the effects of fractionated preparations (42,121,178,182,254,282,200,306,456,524,525,629,688,689). However, the successful application of biosurfactants in bioremediation of petroleum pollutants will require precise targeting to the physical and chemical nature of the pollutant-affecting areas.…”

Section: Treatment Of Contaminated Soils and Sludgesmentioning

confidence: 99%

Recent Advances in Petroleum Microbiology

Hamme¹,

Singh

Ward

2003

Microbiol Mol Biol Rev

1,172

640

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Recent advances in molecular biology have extended our understanding of the metabolic processes related to microbial transformation of petroleum hydrocarbons. The physiological responses of microorganisms to the presence of hydrocarbons, including cell surface alterations and adaptive mechanisms for uptake and efflux of these substrates, have been characterized. New molecular techniques have enhanced our ability to investigate the dynamics of microbial communities in petroleum-impacted ecosystems. By establishing conditions which maximize rates and extents of microbial growth, hydrocarbon access, and transformation, highly accelerated and bioreactor-based petroleum waste degradation processes have been implemented. Biofilters capable of removing and biodegrading volatile petroleum contaminants in air streams with short substrate-microbe contact times (<60 s) are being used effectively. Microbes are being injected into partially spent petroleum reservoirs to enhance oil recovery. However, these microbial processes have not exhibited consistent and effective performance, primarily because of our inability to control conditions in the subsurface environment. Microbes may be exploited to break stable oilfield emulsions to produce pipeline quality oil. There is interest in replacing physical oil desulfurization processes with biodesulfurization methods through promotion of selective sulfur removal without degradation of associated carbon moieties. However, since microbes require an environment containing some water, a two-phase oil-water system must be established to optimize contact between the microbes and the hydrocarbon, and such an emulsion is not easily created with viscous crude oil. This challenge may be circumvented by application of the technology to more refined gasoline and diesel substrates, where aqueous-hydrocarbon emulsions are more easily generated. Molecular approaches are being used to broaden the substrate specificity and increase the rates and extents of desulfurization. Bacterial processes are being commercialized for removal of H2S and sulfoxides from petrochemical waste streams. Microbes also have potential for use in removal of nitrogen from crude oil leading to reduced nitric oxide emissions provided that technical problems similar to those experienced in biodesulfurization can be solved. Enzymes are being exploited to produce added-value products from petroleum substrates, and bacterial biosensors are being used to analyze petroleum-contaminated environments

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Section: Treatment Of Contaminated Soils and Sludgesmentioning

confidence: 99%

Recent Advances in Petroleum Microbiology

Hamme¹,

Singh

Ward

2003

Microbiol Mol Biol Rev

1,172

640

View full text Add to dashboard Cite

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“…Cell free supernatants obtained from the isolates when grown in Nutrient Broth (Lab m laboratories, UK) for 24 h were tested for their ability to IJFS April 2016 Volume 5 pages 12-21 collapse on the surface of an oil drop, as described by Jain, Lee, and Trevors (1992). This was done by adding 40 µl of cooking oil (vegetable oil) to the surface of a clean glass slide and allowing to equilibrate to room temperature (25°C) for 1 h. A loopful of an overnight culture of each isolate was suspended in 150 µl sterile distilled water and 50 µl of the cell suspension was then added to the surface of an oil drop.…”

Section: Drop Collapse Assaymentioning

confidence: 99%

The emulsifying effect of biosurfactants produced by food spoilage organisms in Nigeria

Ogunmola

Aboaba²

2016

IJFS

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Food spoilage organisms were isolated using standard procedures on Nutrient Agar, Cetrimide Agar and Pseudomonas Agar Base (supplemented with CFC). The samples were categorized as animal products (raw fish, egg, raw chicken, corned beef, pasteurized milk) and plant products (vegetable salad, water leaf (Talinium triangulare), boiled rice, tomatoes and pumpkin leaf (Teifairia occidentalis).They were characterised as Pseudomonas

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“…Studies of organic contaminants have shown that both biological (16)(17)(18) and synthetic (19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29) surfactants can enhance either the chemical removal or the biodegradative removal of organic contaminants from soil. While these studies indicate the potential for use of surfactants to facilitate the removal of metals from soil, the literature contains very little actual information concerning surfactant removal of metal contaminants.…”

Section: Biosurfactants In Remediationmentioning

confidence: 99%

Biosurfactant-Facilitated Remediation of Metal-Contaminated Soils

Miller¹

1995

Environmental Health Perspectives

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Bioremediation of metal-contaminated wastestreams has been successfully demonstrated. Normally, whole cells or microbial exopolymers are used to concentrate and/or precipitate metals in the wastestream to aid in metal removal. Analogous remediation of metal-contaminated soils is more complex because microbial cells or large exopolymers do not move freely through the soil. The use of microbially produced surfactants (biosurfactants) is an alternative with potential for remediation of metal-contaminated soils. The distinct advantage of biosurfactants over whole cells or exopolymers is their small size, generally biosurfactant molecular weights are less than 1500. A second advantage is that biosurfactants have a wide variety of chemical structures that may show different metal selectivities and thus, metal removal efficiencies. A review of the literature shows that complexation capacities of several bacterial exopolymers was similar to the complexation capacity of a rhamnolipid biosurfactant produced by Pseudomonas aeruginosa ATCC 9027. -Environ Health Perspect 1 03(Suppl 1): 59-62 (1995)

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Effect of addition ofPseudomonas aeruginosa UG2 inocula or biosurfactants on biodegradation of selected hydrocarbons in soil

Cited by 98 publications

References 29 publications

Recent Advances in Petroleum Microbiology

Recent Advances in Petroleum Microbiology

The emulsifying effect of biosurfactants produced by food spoilage organisms in Nigeria

Biosurfactant-Facilitated Remediation of Metal-Contaminated Soils

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