Rhamnolipid emulsifying activity and emulsion stability: pH rules

Lovaglio, Roberta Barros; Santos, Francisco José dos; Jafelicci, Miguel; Contiero, Jonas

doi:10.1016/j.colsurfb.2011.03.001

Cited by 112 publications

(50 citation statements)

References 19 publications

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“…Surfactants can be divided into two broad categories: chemical and biological surfactants, depending on the method of synthesis. Chemical surfactants are synthesized using nonrenewable sources; they are ecotoxic and nonbiodegradable in nature; therefore, they are less preferred for industrial and household applications (Lovaglio et al 2011). On the other hand, biological surfactants (biosurfactants) are synthesized using renewable resources and have an immense potential for use in diverse applications (Banat et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Biological activity of sophorolipids and their possible use as antiviral agents

et al. 2015

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Sophorolipids are surface active glycolipids consisting of a hydrophilic sophorose unit and a hydrophobic portion composed of a fatty acid tail. Crude sophorolipid sample contains both acidic and lactonic forms of sophorolipid with different degrees of acetylation and varying lengths of the fatty acid chains depending on the substrates used in the production process. Carboxylic end in the acidic form of the fatty acid is free, whereas in the lactonic form, it is internally esterified. Sophorolipids show different physicochemical properties with wide range of applications for each structural compound. Lactonic form of sophorolipids shows surface tension reducing ability and biological activity, whereas the acidic form possesses better foam forming ability and higher solubility. Presence of acetyl groups gives hydrophilic nature to the sophorolipids which promotes its antiviral and cytokine-stimulating properties. The aim of this review is to explore and suggest the plausibility of sophorolipids as therapeutic and prophylactic agents for the treatment of viral diseases.

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Section: Introductionmentioning

confidence: 99%

Biological activity of sophorolipids and their possible use as antiviral agents

et al. 2015

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“…They are suitable candidates for industrial use, since their surface-active properties remain stable over a broad pH range and when heated (Lovaglio et al, 2011). Rhamnolipids exert antimicrobial activity against both fungi and bacteria (Abalos et al, 2001;Haba et al, 2003a;Nitsche et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Rhamnolipids as emulsifying agents for essential oil formulations: Antimicrobial effect against Candida albicans and methicillin-resistant Staphylococcus aureus

Haba

Bouhdid

Torrego-Solana

et al. 2014

International Journal of Pharmaceutics

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“…They have superior characteristics, such as higher biodegradability, lower toxicity, unusual structural diversity, higher efficacy and greater stability towards temperature, pH, and salt concentration than many of their synthetic analogs (Banat et al 2000;Lovaglio et al 2011). Rhamnolipid, a glycolipid biosurfactant, possessing a hydrophobic fatty acid moiety and a hydrophilic moiety composed of one or two rhamnose, is one of the most commonly used surfactant mainly produced by Pseudomonas aeruginosa (Banat et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Optimization of rhamnolipid production by Pseudomonas aeruginosa OG1 using waste frying oil and chicken feather peptone

2017

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In the present study, production of rhamnolipid biosurfactant by Pseudomonas aeruginosa OG1 was statistically optimized by response surface methodology. Box-Behnken design was applied to determine the optimal concentrations of 52, 9.2, and 4.5 g/L for carbon source (waste frying oil), nitrogen source (chicken feather peptone), and KH 2 PO 4 , respectively, in production medium. Under the optimized cultivation conditions, rhamnolipid production reached up to 13.31 g/L (with an emulsification activity of 80%), which is approximately twofold higher than the yield obtained from preliminary cultivations. Hence, rhamnolipid production, noteworthy in the literature, was achieved with the use of statistical optimization on inexpensive waste materials for the first time in the present study.

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Rhamnolipid emulsifying activity and emulsion stability: pH rules

Cited by 112 publications

References 19 publications

Biological activity of sophorolipids and their possible use as antiviral agents

Biological activity of sophorolipids and their possible use as antiviral agents

Rhamnolipids as emulsifying agents for essential oil formulations: Antimicrobial effect against Candida albicans and methicillin-resistant Staphylococcus aureus

Optimization of rhamnolipid production by Pseudomonas aeruginosa OG1 using waste frying oil and chicken feather peptone

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