Journal ArticleDOI
Physicochemical and Antimicrobial Properties of New Rhamnolipids Produced by Pseudomonas aeruginosa AT10 from Soybean Oil Refinery Wastes
TLDR
This study deals with the production, purification, and identification of rhamnolipids in the mixture (M7), as well as their physical and chemical characterization and the evaluation of their antimicrobial properties.Abstract:
The rhamnolipids produced by Pseudomonas aeruginosa strains are often a mixture of several homologues. Up to seven (R2C10C10 + R1C10C10 + R2C10C12 + R1C10C12 + R1C12:1C10 + R1C12:2 + R1C8:2 ) have been identified in cultures of P. aeruginosa AT10 from soybean oil refinery wastes. This study deals with the production, purification, and identification of rhamnolipids in the mixture (M7), as well as their physical and chemical characterization and the evaluation of their antimicrobial properties. The surface tension decreases to 26.8 mN/m and the critical micelle concentration value to 1.2 × 102 mg/L. These molecules show excellent antifungal properties against Aspergillus niger and Gliocadium virens (16 μg/mL) and C. globosum, P. crysogenum, and A. pullulans (32 μg/mL), whereas the growth of the phytopathogenic fungi B. Cinerea and R. solani was inhibited at 18 μg/mL.read more
Citations
More filters
Journal ArticleDOI
Environmental applications for biosurfactants
TL;DR: Biosurfactants are surfactants that are produced extracellularly or as part of the cell membrane by bacteria, yeast and fungi as mentioned in this paper, which are used for soil and water treatment.
Journal ArticleDOI
Microbial biosurfactants production, applications and future potential
Ibrahim M. Banat,Andrea Franzetti,Isabella Gandolfi,Giuseppina Bestetti,Maria Giovanna Martinotti,Letizia Fracchia,Thomas J. Smyth,Roger Marchant +7 more
TL;DR: The current knowledge and the latest advances in biosurfactant applications and the biotechnological strategies being developed for improving production processes and future potential are reviewed.
Journal ArticleDOI
Biosurfactants: potential applications in medicine
TL;DR: Biosurfactants utility as suitable anti-adhesive coating agents for medical insertional materials leading to a reduction in a large number of hospital infections without the use of synthetic drugs and chemicals is indicated.
Journal ArticleDOI
Recent development in the treatment of oily sludge from petroleum industry: A review
TL;DR: The origin, characteristics, and environmental impacts of oily sludge were introduced and no single specific process can be considered as a panacea since each method is associated with different advantages and limitations.
Journal ArticleDOI
Rhamnolipids: diversity of structures, microbial origins and roles
TL;DR: A wide diversity of rhamnolipid congeners and homologues that are produced at different concentrations by various Pseudomonas species and by bacteria belonging to other families, classes, or even phyla are found.
References
More filters
Book
Surfactants and Interfacial Phenomena
TL;DR: In this paper, the Gibbs equation is used to calculate the area per Molecule at the interface by using the Gibbs Equation (GEE) of the Gibbs equilibrium. But the Gibbs equations are not applicable to surface-active agents.
Journal ArticleDOI
Potential commercial applications of microbial surfactants.
TL;DR: Biosurfactants are amphiphilic compounds of microbial origin with considerable potential in commercial applications within various industries and have advantages over their chemical counterparts in biodegradability and effectiveness at extreme temperature or pH and in having lower toxicity.
Journal ArticleDOI
Alkanediyl-.alpha.,.omega.-bis(dimethylalkylammonium bromide) surfactants. 3. Behavior at the air-water interface
Journal ArticleDOI
Rhamnose lipids--biosynthesis, microbial production and application potential.
TL;DR: After initial testing, rhamnolipids seem to have potential applications in combating marine oil pollution, removing oil from sand and in combating zoosporic phytopathogens.
Related Papers (5)
Microbial production of surfactants and their commercial potential.
JD Desai,Ibrahim M. Banat +1 more