Removal of polycyclic aromatic hydrocarbons in soil spiked with model mixtures of petroleum hydrocarbons and heterocycles using biosurfactants from Rhodococcus ruber IEGM 231

Ившина, И. Б.; Kostina, L. V.; Krivoruchko, Anastasiya V.; Kuyukina, Maria S.; Peshkur, Tatyana; Anderson, Peter; Cunningham, Colm

doi:10.1016/j.jhazmat.2016.03.007

Cited by 46 publications

(15 citation statements)

References 53 publications

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“…(3) Modification of cell membrane lipid composition and enhancement of hydrophobic properties and interactions (Figure 3B), in addition to the production of surfactants that solubilize hydrophobic pollutants [103,104,117,[132][133][134]. The study of rhodococci by cryofractography showed the presence of a large number of rounded structures on the cell chips surrounded by a roller and corresponding to fat droplets (see Figure 3B).…”

Section: Adaptive Cell Modifications Of Rhodococci Exposed To Hydrocarbons and Other Environmental Pollutantsmentioning

confidence: 99%

Responses to Ecopollutants and Pathogenization Risks of Saprotrophic Rhodococcus Species

et al. 2021

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Under conditions of increasing environmental pollution, true saprophytes are capable of changing their survival strategies and demonstrating certain pathogenicity factors. Actinobacteria of the genus Rhodococcus, typical soil and aquatic biotope inhabitants, are characterized by high ecological plasticity and a wide range of oxidized organic substrates, including hydrocarbons and their derivatives. Their cell adaptations, such as the ability of adhering and colonizing surfaces, a complex life cycle, formation of resting cells and capsule-like structures, diauxotrophy, and a rigid cell wall, developed against the negative effects of anthropogenic pollutants are discussed and the risks of possible pathogenization of free-living saprotrophic Rhodococcus species are proposed. Due to universal adaptation features, Rhodococcus species are among the candidates, if further anthropogenic pressure increases, to move into the group of potentially pathogenic organisms with “unprofessional” parasitism, and to join an expanding list of infectious agents as facultative or occasional parasites.

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Section: Adaptive Cell Modifications Of Rhodococci Exposed To Hydrocarbons and Other Environmental Pollutantsmentioning

confidence: 99%

Responses to Ecopollutants and Pathogenization Risks of Saprotrophic Rhodococcus Species

et al. 2021

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“…ruber is an environmental organism that presents remarkable bioremediation abilities, as well as the capacity to synthesise polymeric bioplastic precursors. The enzymatic machinery behind these activities comprises dehydrogenases (Wang et al, 2017), sterol hydroxylases (Guevara et al, 2017), alkylsulfatases (Pogorevc and Faber, 2003), production of biosurfactants (Ivshina et al, 2016) and many other activities that allow degradation of polyethylene (Orr et al, 2004), polychlorinated biphenyls (Egorova et al, 2013), polycyclic aromatic hydrocarbons (Ivshina et al, 2016) and other recalcitrant contaminants. R. ruber has also been used as a model organism for production of polyhydroxybutyric acid (Pieper and Steinb € uchel, 1992).…”

Section: Body Of Knowledgementioning

confidence: 99%

Update of the list of QPS‐recommended biological agents intentionally added to food or feed as notified to EFSA 11: suitability of taxonomic units notified to EFSA until September 2019

Koutsoumanis¹,

Allende²,

Álvarez‐Ordóñez³

et al. 2020

EFS2

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Qualified presumption of safety (QPS) was developed to provide a generic safety evaluation for biological agents to support EFSA's Scientific Panels. The taxonomic identity, body of knowledge, safety concerns and antimicrobial resistance are assessed. Safety concerns identified for a taxonomic unit (TU) are where possible to be confirmed at strain or product level, reflected by ‘qualifications’. No new information was found that would change the previously recommended QPS TUs and their qualifications. The list of microorganisms notified to EFSA was updated with 54 biological agents, received between April and September 2019; 23 already had QPS status, 14 were excluded from the QPS exercise (7 filamentous fungi, 6 Escherichia coli, Sphingomonas paucimobilis which was already evaluated). Seventeen, corresponding to 16 TUs, were evaluated for possible QPS status, fourteen of these for the first time, and Protaminobacter rubrum, evaluated previously, was excluded because it is not a valid species. Eight TUs are recommended for QPS status. Lactobacillus parafarraginis and Zygosaccharomyces rouxii are recommended to be included in the QPS list. Parageobacillus thermoglucosidasius and Paenibacillus illinoisensis can be recommended for the QPS list with the qualification ‘for production purposes only’ and absence of toxigenic potential. Bacillus velezensis can be recommended for the QPS list with the qualifications; the absence of toxigenic potential and the absence of aminoglycoside production, including the genes encoding this. Cupriavidus necator, Aurantiochytrium limacinum and Tetraselmis chuii can be recommended for the QPS list with the qualification; for production purposes only. Pantoea ananatis is not recommended for the QPS list due to lack of body of knowledge in relation to its pathogenicity potential for plants. Corynebacterium stationis, Hamamotoa singularis, Rhodococcus aetherivorans and Rhodococcus ruber cannot be recommended for the QPS list due to lack of body of knowledge. Kodamaea ohmeri cannot be recommended for the QPS list due to safety concerns.

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“…Due to their biodegradability and low ecotoxicity, biosurfactants appear predetermined for applications involving a release into the environment. Such processes are of great interest, since the accumulation of petroleum hydrocarbons, heavy metals and other pollutants constitute a growing global concern for terrestrial and marine environments [150,197,198,199]. Examples are remediation processes to treat polluted sites by applying bioremediation concepts that rely on bio-based compounds.…”

Section: Applications Of Biosurfactantsmentioning

confidence: 99%

Marine Biosurfactants: Biosynthesis, Structural Diversity and Biotechnological Applications

et al. 2019

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Biosurfactants are amphiphilic secondary metabolites produced by microorganisms. Marine bacteria have recently emerged as a rich source for these natural products which exhibit surface-active properties, making them useful for diverse applications such as detergents, wetting and foaming agents, solubilisers, emulsifiers and dispersants. Although precise structural data are often lacking, the already available information deduced from biochemical analyses and genome sequences of marine microbes indicates a high structural diversity including a broad spectrum of fatty acid derivatives, lipoamino acids, lipopeptides and glycolipids. This review aims to summarise biosyntheses and structures with an emphasis on low molecular weight biosurfactants produced by marine microorganisms and describes various biotechnological applications with special emphasis on their role in the bioremediation of oil-contaminated environments. Furthermore, novel exploitation strategies are suggested in an attempt to extend the existing biosurfactant portfolio.

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Removal of polycyclic aromatic hydrocarbons in soil spiked with model mixtures of petroleum hydrocarbons and heterocycles using biosurfactants from Rhodococcus ruber IEGM 231

Cited by 46 publications

References 53 publications

Responses to Ecopollutants and Pathogenization Risks of Saprotrophic Rhodococcus Species

Responses to Ecopollutants and Pathogenization Risks of Saprotrophic Rhodococcus Species

Update of the list of QPS‐recommended biological agents intentionally added to food or feed as notified to EFSA 11: suitability of taxonomic units notified to EFSA until September 2019

Marine Biosurfactants: Biosynthesis, Structural Diversity and Biotechnological Applications

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