A comparison between conventional Pseudomonas aeruginosa rhamnolipids and Escherichia coli transmembrane proteins for oil recovery enhancing

Álvarez-Yela, Astrid Catalina; Martinez, María Alejandra; Piñeros, Guillermo Andrés Rangel; López, Viviana Clavijo; Villamizar, Santiago Hernández; Vélez, Vanessa Lucía Núñez; Abraham, Wolf‐Rainer; Vives, Martha J.; Barrios, Andrés Fernando González

doi:10.1016/j.ibiod.2016.04.033

Cited by 16 publications

(4 citation statements)

References 29 publications

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“…Thus, it is not difficult to see, the surfactants produced by strains play an important role in the enhanced oil recovery of low permeability reservoirs. Biosurfactant, produced by microbial metabolism, is a kind of amphoteric compound that contains hydrophilic group and lipophilic group 9 . Biosurfactant can not only reduce the oil–water interfacial tension, and alter the rock wettability, but also accelerate the emulsification of crude oil.…”

Section: Introductionmentioning

confidence: 99%

Biosurfactant production by Bacillus subtilis SL and its potential for enhanced oil recovery in low permeability reservoirs

Xiu

et al. 2022

Sci Rep

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Microbial enhanced oil recovery (MEOR) technology is an environmental-friendly EOR method that utilizes the microorganisms and their metabolites to recover the crude oil from reservoirs. This study aims to research the potential application of strain SL in low permeability reservoirs. Strain SL is identified as Bacillus subtilis by molecular methods. Based on the mass spectrometry, the biosurfactant produced by strain SL is characterized as lipopeptide, and the molecular weight of surfactin is 1044, 1058, 1072, 1084 Da. Strain SL produces 1320 mg/L of biosurfactant with sucrose as the sole carbon source after 72 h. With the production of biosurfactant, the surface tension of cell-free broth considerably decreases to 25.65 ± 0.64 mN/m and the interfacial tension against crude oil reaches 0.95 ± 0.22 mN/m. The biosurfactant exhibits excellent emulsification with crude oil, kerosene, octane and hexadecane. In addition, the biosurfactant possesses splendid surface activity at pH 5.0–12.0 and NaCl concentration of 10.0% (w/v), even at high temperature of 120 °C. The fermentation solution of strain SL is applied in core flooding experiments under reservoir conditions and obtains additional 5.66% of crude oil. Hence, the presented strain has tremendous potential for enhancing the oil recovery from low-permeability reservoirs.

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Section: Introductionmentioning

confidence: 99%

Biosurfactant production by Bacillus subtilis SL and its potential for enhanced oil recovery in low permeability reservoirs

Xiu

et al. 2022

Sci Rep

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“…Promising abilities compared with chemical surfactants, were shown. The application of these microbial amphiphilic molecules to the remediation of hydrocarbons aims to increase their bioavailability or mobilization and remove these contaminants by pseudo‐solubilization and emulsification in a treatment process . Further investigations are, however, required on contaminated soil surfaces followed by cytotoxicity analyses, which could confirm these promising findings.…”

Section: Discussionmentioning

confidence: 99%

Promising abilities of mercapto‐degrading Staphylococcus capitis strain SH6 in both crude oil and waste motor oil as sole carbon and energy sources: its biosurfactant production and preliminary characterization

Chebbi

Hentati

Cheffi

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND It was shown previously that a Staphylococcus capitis strain SH6 was able to degrade several malodorous mercaptans and simultaneously reduce the surface tension. RESULTS This present work revealed the capacity of strain SH6 to grow on various hydrocarbons, used as the only carbon and energy sources. Based on GC–MS analyses, the substantial ability to degrade up to 45% and 64% of aliphatic hydrocarbons (n‐alkanes) of crude oil and waste motor oil, respectively, after 30 days of incubation at 37 °C and 180 rpm, was shown. The properties of biosurfactant produced by strain SH6 grown on different oil substrates (diesel oil and waste motor oil) were studied. Biosurfactants exhibited enhanced emulsification capacities and significant stabilities over a wide range of salinity (20–150 g L‐1), temperature (–20–100 °C), and pH , and also the ability to remove crude oil from contaminated soils. Their critical micelle concentrations (CMC) were of 800 mg L‐1. FTIR analyses suggested the lipopetide nature of biosurfactants. CONCLUSION The stabilities of biosurfactants over a wide pH range, high temperatures and variable concentrations of salt, as well as emulsifying properties, suggest potential applications in bioremediation processes. © 2017 Society of Chemical Industry

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“…Gelatin apparently caused the GSR and GCR films to be formed in an alkaline environment, reducing the overall phenolic content of the films and resulting in lower antioxidant activity [38]. The release of active compounds and other factors, such as the interaction of active components with polymers and the microstructure of the films, was the key determinant of the ability of composite films to combat free radicals [39].…”

Section: Dpph Radical Scavenging Activitymentioning

confidence: 99%

Preparation of a Dual-Functional Active Film Based on Bilayer Hydrogel and Red Cabbage Anthocyanin for Maintaining and Monitoring Pork Freshness

Huang,

Zhao,

et al. 2023

Foods

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In this study, a composite film was created with the dual goal of prolonging pork shelf life and showing freshness. Hydrogel materials as solid base films were selected from gelatin (G), sodium alginate (SA) and carboxymethyl cellulose (CMC) based on their antioxidant activity, water vapor permeability, mechanical properties, as well as their stability, antimicrobial activity, and freshness, which indicates effectiveness when combined with anthocyanins. Furthermore, the effects of several concentrations of red cabbage anthocyanin (R) (3%, 6%, 12%, and 24%) on freshness indicators and bacteriostasis were investigated. The antimicrobial activity of the composite films was evaluated against Escherichia coli, Bacillus subtilis, and Staphylococcus aureus. Likewise, the freshness indicates effectiveness was evaluated for NH3. Considering the mechanical properties, antibacterial ability, freshness indicator effect, and stability of the composite film, CS film combined with 12% R was selected to prepare a dual-functional intelligent film for pork freshness indicator and preservation. By thoroughly investigating the effect of composite film on pork conservation and combining with it KNN, the discriminative model of pork freshness grade was established and the recognition rate of the prediction set was up to 93.3%. These results indicated that CSR film can be used for the creation of active food packaging materials.

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A comparison between conventional Pseudomonas aeruginosa rhamnolipids and Escherichia coli transmembrane proteins for oil recovery enhancing

Cited by 16 publications

References 29 publications

Biosurfactant production by Bacillus subtilis SL and its potential for enhanced oil recovery in low permeability reservoirs

Biosurfactant production by Bacillus subtilis SL and its potential for enhanced oil recovery in low permeability reservoirs

Promising abilities of mercapto‐degrading Staphylococcus capitis strain SH6 in both crude oil and waste motor oil as sole carbon and energy sources: its biosurfactant production and preliminary characterization

Preparation of a Dual-Functional Active Film Based on Bilayer Hydrogel and Red Cabbage Anthocyanin for Maintaining and Monitoring Pork Freshness

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