Differences and dynamic changes in the cell surface properties of three Pseudomonas aeruginosa strains isolated from petroleum-polluted soil as a response to various carbon sources and the external addition of rhamnolipids

Górna, Hanna; Ławniczak, Łukasz; Zgoła‐Grześkowiak, Agnieszka; Kaczorek, Ewa

doi:10.1016/j.biortech.2010.09.124

Cited by 54 publications

(19 citation statements)

References 32 publications

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“…The cell surface hydrophobicity of bacterial strains was determined using a modified method of microbial adhesion to the hydrocarbon (Górna et al 2011). The optical density of biomass suspension was measured at 600 nm on the UV-Visible Spectrophotometer Shimadzu (Shim-Pol, Izabelin, Poland), using heptane as the model hydrocarbon.…”

Section: Methodsmentioning

confidence: 99%

Bacterial properties changing under Triton X-100 presence in the diesel oil biodegradation systems: from surface and cellular changes to mono- and dioxygenases activities

Sałek

Kaczorek

Zgoła‐Grześkowiak

2014

Environ Sci Pollut Res

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Triton X-100, as one of the most popular surfactants used in bioremediation techniques, has been reported as an effective agent enhancing the biodegradation of hydrocarbons. However efficient, the surfactant’s role in different processes that together enable the satisfying biodegradation should be thoroughly analysed and verified. In this research, we present the interactions of Triton X-100 with the bacterial surfaces (hydrophobicity and zeta potential), its influence on the enzymatic properties (considering mono- and dioxygenases) and profiles of fatty acids, which then all together were compared with the biodegradation rates. The addition of various concentrations of Triton X-100 to diesel oil system revealed different cell surface hydrophobicity (CSH) of the tested strains. The results demonstrated that for Pseudomonas stutzeri strain 9, higher diesel oil biodegradation was correlated with hydrophilic properties of the tested strain and lower Triton X-100 biodegradation. Furthermore, an increase of the branched fatty acids was observed for this strain.Electronic supplementary materialThe online version of this article (doi:10.1007/s11356-014-3668-z) contains supplementary material, which is available to authorized users.

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Section: Methodsmentioning

confidence: 99%

Bacterial properties changing under Triton X-100 presence in the diesel oil biodegradation systems: from surface and cellular changes to mono- and dioxygenases activities

Sałek

Kaczorek

Zgoła‐Grześkowiak

2014

Environ Sci Pollut Res

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“…The first stage of biosurfactant production in P. aeruginosa UG2 and PG201 was correlated with an increase in cell surface hydrophobicity, which may facilitate cell adhesion in the oil-water interface and therefore substrate access [27]. Additionally, a recent study examining three strains of P. aeruginosa found that increases in cell surface hydrophobicity occurred initially when grown on diesel fuel, glucose, and dodecane and hecadecane mixtures, with a decline in cell surface hydrophobicity after the initial increase [34]. These increases were substrate-dependent, and the presence of rhamnolipids was a key factor in the ability of P. aeruginosa to degrade larger amounts of different hydrocarbons [34].…”

Section: Tolerance To Low Water Availabilitymentioning

confidence: 98%

“…Proposed mechanisms of low-water tolerance have included energetic adjustments, namely the reduction of metabolic activity [7], efficient DNA repair mechanisms [15], adjustments of cell walls or unique extracellular structures [101], changes in cell surface hydrophobicity [34], and the biosynthesis of osmolytes [7] and extracellular biosurfactants that regulate hydraulic potential gradients [94].…”

Section: Tolerance To Low Water Availabilitymentioning

confidence: 99%

Microbial processes in the Athabasca Oil Sands and their potential applications in microbial enhanced oil recovery

Harner

Richardson

Thompson

et al. 2011

J Ind Microbiol Biotechnol

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The Athabasca Oil Sands are located within the Western Canadian Sedimentary Basin, which covers over 140,200 km(2) of land in Alberta, Canada. The oil sands provide a unique environment for bacteria as a result of the stressors of low water availability and high hydrocarbon concentrations. Understanding the mechanisms bacteria use to tolerate these stresses may aid in our understanding of how hydrocarbon degradation has occurred over geological time, and how these processes and related tolerance mechanisms may be used in biotechnology applications such as microbial enhanced oil recovery (MEOR). The majority of research has focused on microbiology processes in oil reservoirs and oilfields; as such there is a paucity of information specific to oil sands. By studying microbial processes in oil sands there is the potential to use microbes in MEOR applications. This article reviews the microbiology of the Athabasca Oil Sands and the mechanisms bacteria use to tolerate low water and high hydrocarbon availability in oil reservoirs and oilfields, and potential applications in MEOR.

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“…10,38,47 Despite the diversity of the reported RL structures, there are relatively few studies which both quantitatively and qualitatively analyzed RLs. 7,38,43,[47][48][49] The composition of RL mixtures produced is important, since this defines the physicochemical properties of the products, which further impacts on their potential application.…”

Section: Compositionmentioning

confidence: 99%

Rhamnolipid biosurfactant from Pseudomonas aeruginosa: From discovery to application in contemporary technology

2015

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The rhamnolipids will most likely be the next generation of biosurfactants to reach the market. They should follow closely after alkyl polyglycosides, already established in the biosurfactants market, and sophorolipids, which can be found in several cleaning agents. However, the greatest numbers of recent publications and patents among glycolipid biosurfactants have been dedicated to rhamnolipids. Produced mainly by Pseudomonas aeruginosa, rhamnolipids are mixtures of different rhamnolipid congeners, which show physico-chemical properties that differ from those of single congeners, with the most abundant structure in the mixture having the largest impact on the overall characteristics of the total mixture. Characteristics of biodegradability, low toxicity, production from renewable sources and antimicrobial (particularly antifungal) activity together make rhamnolipid biosurfactants particularly promising for broad commercial application. Although to date, bioremediation has been the major topic filed for patents utilizing rhamnolipids, the increasing number of patents for applications in cosmetics, agronomy and food industries, formulation of cleaners and nanotechnology indicates their future implementation in these fields.

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Differences and dynamic changes in the cell surface properties of three Pseudomonas aeruginosa strains isolated from petroleum-polluted soil as a response to various carbon sources and the external addition of rhamnolipids

Cited by 54 publications

References 32 publications

Bacterial properties changing under Triton X-100 presence in the diesel oil biodegradation systems: from surface and cellular changes to mono- and dioxygenases activities

Bacterial properties changing under Triton X-100 presence in the diesel oil biodegradation systems: from surface and cellular changes to mono- and dioxygenases activities

Microbial processes in the Athabasca Oil Sands and their potential applications in microbial enhanced oil recovery

Rhamnolipid biosurfactant from Pseudomonas aeruginosa: From discovery to application in contemporary technology

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