Determinación de la cmc. La concentración micelar crítica (cmc) de un tensioactivo puede ser determinada por numerosos métodos que utilizan las diferencias. CONCENTRACIÓN MICELAR CRÍTICA DE UN SURFACTANTE ESQUEMA MOLECULAR DE LA TENSIÓN SUPERFICIAL ECUACIÓN DE LA. micelles and is known as the critical micelle concentration (CMC). commonly used surfactants the CMC is typically less than about M (e.g. sodium.

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The properties of surfactants are characterized principally by four parameters: Recent advances in petroleum microbiology.

Guerra Santos et al. However, the principal disadvantage is their high production cost in some cases. Enhanced octadecane dispersion and biodegradation by Pseudomonas rhamnolipid surfactant biosurfactant. Surfactants are synthesized chemically or biologically, in which case they are called biosurfactants.

Micellar Systems

Biosurfactant production by a soil Pseudomonas strain growing on polycyclic aromatic hydrocarbons. As model systems they are simpler, with well-defined sizes and advantageous properties. The influence of vegetable oils on biosurfactant production by Serratia mercescens.

Biodegradation of slop oil from a petrochemical industry and bioremediation of slop oil contaminated soil. Acta31 Biosurfactants for cosmetic applications.

The critical micellization concentration is determined by the point of intersection of two extrapolated curves which represent such relations above and below the critical concentration. Biosurfactants, more in demand than ever. Aunque una amplia gama de microorganismos son capaces de sintetizar biotensoactivos, las bacterias son las principales productoras.


The CMC obtained by conductimetric determination was satisfactory. The effect of the main process variables on the production of biosurfactants is also discussed, particularly of rhamnolipids from Pseudomonas aeruginosa.

Elementos traza como hierro y manganeso modifican el rendimiento del biotensoactivo Mukherjee et al. Bacillus subtilis produce surfactina con sacarosa como fuente de carbono Makkar y Cameotra Production of biosurfactant at mesophilic and thermophilic conditions by a strain of Bacillus subtilis.

Para cada microlitro adicionado registrou-se uma medida. Identification and characterization of a soil bacterium with extracellular emulsifying activity.

Micellar Systems | QBFE -USC

Carlos Penedo visits us. Public lecture of Mercedes Novo in the outreach event DivulgaTerra. Isolation of a bioemulsifier from Candida lipolytica. Characterization of a new lipopeptide surfactant produced by thermotolerant and halotolerant subsurface Cincentracion licheniformis BAS Biosurfactants and their application for soil bioremediation.

In which subject field? Biosurfactant production with glucose as a carbon source. Surface activities of Mycobacterium and Pseudomonas.

Enzyme technology for the lipids industry: Aqueous solution of the paraffinchains salts: Physicochemical properties of selected anionic, cationic and nonionic surfactants. The value of the critical micellization concentration can depend, to a certain extent, on the property under consideration and on the method chosen to measure this property. Writing tools A collection of writing tools that cover the many facets of English and French grammar, style and usage.

Biological role of gramicidin S in spore functions.

Propiedades , aplicaciones y producción de biotensoactivos: una revisión

Microorganismos como Acinetobacter spp. Recent trends in the biochemistry of surfactin. The use of a general concentration model eliminates subjective graphical procedures, reduces methodological differences, concentrwcion thus allows one to compare directly the results of different techniques or to perform global fits. How to cite this article.


Lipopeptides, an attractive class of microbial surfactants. On a metabolic product of Ps. A new lipopeptide biosurfactant produced by Arthrobacter sp. The interaction of the moderately hydrophobic cationic dye R with surfactants of differently charged head groups shows a behaviour criyica surprising variety. Microbial surfactants and their use in field studies of soil remediation.

Surfaceactive compounds from microorganisms. Effect of the lipopeptide antibiotic, iturin A, on morphology and membrane ultrastructure of yeast cells. Un efecto kicelar la fuente de carbono en el biotensoactivo producido fue observado por Robert et al.

Os HA como pseudo micelas podem formar ambos os processos: Cultivada con glucosa, B. Optimization of cultural conditions for biosurfactant production from Nocardia amarae.

Dye exchange in micellar solutions.

Although an extensive number of microorganisms are capable of synthesizing biosurfactants, they are mainly produced by bacteria. The simplest case is found with conncentracion surfactants.

Aerobic stepwise hydrocarbon degradation and formation of biosurfactants by an original soil population in a stirred reactor. Estas dos clases de biotensoactivos poseen actividad antibacteriana debido a su capacidad de solubilizar enzimas de membrana. Determination of the critical micelle concentration of humic acids by spectroscopy and conductimetric measurements.