Effect of surfactants on the biofilm of Rhodococcus erythropolis, a potent degrader of aromatic pollutants

Schreiberová, O; Hedbavna, Petra; Čejková, Alena; Jirků, V.; Masák, Jan

doi:10.1016/j.nbt.2012.04.005

Cited by 28 publications

(12 citation statements)

References 47 publications

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“…In many studies, a linear relationship was found between microbial surface hydrophobicity and their adhesion to hydrophobic solid surfaces. The results of this study are in agreement with previous studies saying that hydrophobic bacteria have stronger adhesion on hydrophobic surface than hydrophilic surface [28,[52][53][54]. Moreover, our findings are also in line with Schreiberová et al [53] and Feng et al [26], which found that surface hydrophobicity of R. erythropolis increased when treated with rhamnolipid and form strong biofilm on hydrophobic surfaces.…”

Section: Rhamnolipid Influenced the Adhesion Of Bacteria On The A Brsupporting

confidence: 93%

Effect of rhamnolipid on the physicochemical properties and interaction of bacteria and fungi

et al. 2020

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Bacterial adhesion on surfaces is an essential initial step in promoting bacterial mobilization for soil bioremediation process. Modification of the cell surface is required to improve the adhesion of bacteria. The modification of physicochemical properties by rhamnolipid to Pseudomonas putida KT2442, Rhodococcus erythropolis 3586 and Aspergillus brasiliensis ATCC 16404 strains was analysed using contact angle measurements. The surface energy and total free energy of adhesion were calculated to predict the adhesion of both bacteria strains on the A. brasiliensis surface. The study of bacterial adhesion was carried out to evaluate experimental value with the theoretical results. Bacteria and fungi physicochemical properties were modified significantly when treated with rhamnolipid. The adhesion rate of P. putida improved by 16% with the addition of rhamnolipid (below 1 CMC), while the increase of rhamnolipid concentration beyond 1 CMC did not further enhance the bacterial adhesion. The addition of rhamnolipid did not affect the adhesion of R. erythropolis. A good relationship has been obtained in which water contact angle and surface energy of fungal surfaces are the major factors contributing to the bacterial adhesion. The adhesion is mainly driven by acid-base interaction. This finding provides insight to the role of physicochemical properties in controlling the bacterial adhesion on the fungal surface to enhance bacteria transport in soil bioremediation.

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Section: Rhamnolipid Influenced the Adhesion Of Bacteria On The A Brsupporting

confidence: 93%

Effect of rhamnolipid on the physicochemical properties and interaction of bacteria and fungi

et al. 2020

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“…Furthermore, the MUFA content was kept nearly constant for each tested NaCl concentration, although the cells changed the net surface charge (data not shown). and growth rate (filled squares) dependence on sodium chloride concentration Discussion R. erythropolis cells are able to perform a series of biotransformations and degradations that might be relevant for future biotechnological processes (de Carvalho andda Fonseca 2002, 2005;de Carvalho et al 2007de Carvalho et al , 2009Liu et al 2012;Pirog et al 2013;Schreiberova et al 2012). However, if bioremediation and, in particular, bioaugmentation is envisaged, the cells must be able to endure environmental conditions far from optimal.…”

Section: Fast Adaptations To the Presence Of Sodium Chloridementioning

confidence: 99%

“…However, if bioremediation and, in particular, bioaugmentation is envisaged, the cells must be able to endure environmental conditions far from optimal. These cells are good degraders of both aliphatic (de Carvalho et al , 2009Liu et al 2012) and aromatic compounds (de Carvalho et al 2007;Eggeling and Sahm 1980;Schreiberova et al 2012), are able to desulfurise dibenzothiophenes (Izumi et al 1994;Ohshiro et al 1996;Wang and Krawiec 1996;Yu et al 2006) and may be used in the bioremediation of fuels (de Carvalho and da Fonseca 2005; Lee et al 1999;Michel et al 2004). Since most oil deposits and oilfield-produced water contain high concentrations of salt, the cells should be able to withstand salt shocks.…”

Section: Fast Adaptations To the Presence Of Sodium Chloridementioning

confidence: 99%

Rapid adaptation of Rhodococcus erythropolis cells to salt stress by synthesizing polyunsaturated fatty acids

Carvalho

Marques

Hachicho

et al. 2014

Appl Microbiol Biotechnol

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Bacterial cells are known to adapt to challenging environmental conditions such as osmotic stress. However, most of the work done in this field describes the adaptation of growing populations where the new generations acquire traits that improve their ability to survive. In the present study, the responses of Rhodococcus erythropolis cells within the first 30 min after exposure to osmotic stress caused by sodium chloride were studied. The cells changed the total lipid fatty acid composition and also the net surface charge in the 30 min following exposure. Surprisingly, the cells produced a high percentage of polyunsaturated fatty acids. In the presence of 7.5 % NaCl, these polyunsaturated fatty acids, mainly eicosapentaenoic acid (C20:5ω3), arachidonic acid (C20:4ω6) and docosapentaenoic acid (C22:5ω3), comprise more than 36 % of the total fatty acids. The possible function of these very uncommon fatty acids in bacteria could be the decrease in the number of negatively charged groups in ion channels resulting in a repellence of the NaCl.

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“…On the other hand, the adsorption mechanism of surfactants on the surface of the cell increases the repulsive forces, whereby weakening the interconnection of the biofilm matrix. Thus, the biofilm structure becomes unstable and vulnerable to hydraulic and mechanical changes which might occur in a porous media (Schreiberová et al, 2012).…”

Section: The Effect Of Surfactants On the Biomassmentioning

confidence: 99%

A Review of Surfactant Role in Soil Clogging Processes at Wastewater Exfiltration Locations in Sewers

Nikpay¹,

Krebs

Ellis³

2017

Water Environment Research

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Wastewater contains significant sources of pollutants and contaminants. often the failure of a pipe, inadequate sealing or corrupt pipe-connections cause the loss of raw sewage, which percolates into the nearby soil. As a consequence, a colmation layer in conjunction with soil clogging is developing, which regulates the exfiltration rate. Recently, literature has emerged that offers findings about the effects of wastewater surfactants on the change of physical properties of the soil. A survey of published literature in this field provides information highlighting the influential mechanisms of surfactants in soil clogging through physical, chemical and biological processes. Therefore, to provide a comprehensive approach, this review describes the adsorption mechanisms of surfactants on organic and inorganic particles, at gas-bubbles and at biomass. We also provided our own input to the description of the adsorption of surfactants at fluid/fluid and fluid/solid interfaces in porous media associated with the clogging process.

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Effect of surfactants on the biofilm of Rhodococcus erythropolis, a potent degrader of aromatic pollutants

Cited by 28 publications

References 47 publications

Effect of rhamnolipid on the physicochemical properties and interaction of bacteria and fungi

Effect of rhamnolipid on the physicochemical properties and interaction of bacteria and fungi

Rapid adaptation of Rhodococcus erythropolis cells to salt stress by synthesizing polyunsaturated fatty acids

A Review of Surfactant Role in Soil Clogging Processes at Wastewater Exfiltration Locations in Sewers

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