A Microbial Biorealm page on the genus Bacillus licheniformis. NCBI: Taxonomy. Bacillus licheniformis is a bacterium that is commonly found in soil and bird feathers. Birds that tend to stay on the ground more than the air i.

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Biosurfactant properties, applications and production: a review. Recibido diciembre Aceptado marzo Aunque una amplia gama de microorganismos son capaces de sintetizar biotensoactivos, las bacterias son las principales productoras. Surfactants are synthesized chemically or biologically, in which case they are called biosurfactants. Although an extensive number of microorganisms are capable of synthesizing biosurfactants, they are mainly produced by bacteria.

Biosurfactants have advantages over chemical surfactants due to their compatibility with the environment, low toxicity and biodegradability. However, the principal disadvantage is their high production cost in some cases.

In this paper the chemical and microbiological properties of surfactants and biosurfactants are described as well as biosurfactant applications, principally in the bioremediation field. The effect of the main process variables on the production of biosurfactants is also discussed, particularly of rhamnolipids from Pseudomonas aeruginosa. Key words: biosurfactants, Pseudomonas aeruginosa , rhamnolipids, surface tension. Adair et al. Estas dos clases de biotensoactivos poseen actividad antibacteriana debido a su capacidad de solubilizar enzimas de membrana.

Biotensoactivos: funciones microbianas y microorganismos productores. Varios tipos de microorganismos, incluyendo bacterias, levaduras y hongos, poseen un metabolismo capaz de producir biotensoactivos Correa et al. Cuando estos sustratos son inaccesibles por su baja solubilidad, competencia con otros microorganismos u otro tipo de factor ambiental, utilizan a los biotensoactivos para disponer de la fuente de carbono. Nitschke et al. Otros biotensoactivos y sus microorganismos productores.

Microorganismos como Acinetobacter spp. En el caso de Acinetobacter spp. Las cepas denominadas F2. Morikawa et al. Ferraz et al. En la agricultura, los biotensoactivos son aplicados debido a su actividad insecticida y herbicida. Ejemplo de esta actividad son los productos utilizados por la empresa Rhamnolipods Co. Vidali Por ejemplo, la solubilidad del octadecano en agua es de 0. Este comportamiento es corroborado por una extensa cantidad de trabajos.

Tang et al. Foght et al. Berg et al. Existen diversos procedimientos para el uso de microorganismos productores de biotensoactivos en los procesos de MEOR. Una de las principales ventajas de los biotensoactivos es que son compatibles con la piel, ya que no son irritantes Kleckner y Kosaric Elementos traza como hierro y manganeso modifican el rendimiento del biotensoactivo Mukherjee et al.

Un efecto de la fuente de carbono en el biotensoactivo producido fue observado por Robert et al. Bodour et al. Cultivaron cepas de Flavobacterium sp. Javaheri et al. Cultivada con glucosa, B. Bacillus subtilis produce surfactina con sacarosa como fuente de carbono Makkar y Cameotra Candida sp.

Tanto Guerra Santos et al. Guerra Santos et al. Rashedi et al. Robert et al. Yateem et al. Tarek et al. Chayabutra et al. El tercero es la termoestabilidad que le permite mantener su capacidad tensoactiva. Abalos A. Physicochemical and antimicrobial properties of new rhamnolipids produced by Pseudomonas aeruginosa AT10 from soybean oil refinery wastes. Effect of combined nutrients on biosurfactant produced by Pseudomonas putida.

Surfactin, a crystalline peptidelipid surfactant produced by Bacillus subtilis : isolation, characterization and its inhibition of fbrin clot formation. Fats Other Lipids. World J. Biosurfactants production and possible uses in microbial enhanced oil recovery and oil pollution remediation: a review. Bioresource Technol. Biosurfactants, more in demand than ever. Potential commercial applications of microbial surfactants. Identification and characterization of a soil bacterium with extracellular emulsifying activity.

On a metabolic product of Ps. Mineral Geol. Structure and characterization of favolipids, a novel class of biosurfactants produced by Flavobacterium sp. Strain MTN Biosurfactants for cosmetic applications. Cosmetic Sci. Biosurfactantenhanced bioremediation of polycyclic aromatic hydrocarbons. Trends Biotechnol. Rhamnolipid production by Pseudomonas aeruginosa under denitrification: effects of limiting nutrients and carbon substrates. Microbial surfactants and their use in field studies of soil remediation.

Remediation of contaminated soil by surfactantaided soil washing. Isolation of a bioemulsifier from Candida lipolytica. Process Biochem. Production of a biosurfactant from Torulopsis bombicola. Surface activities of Mycobacterium and Pseudomonas. Surface active properties of a biosurfactant from Corynebacterium lepus. Oil Chem. Production of biosurfactants by hydrocarbon degrading Rhodococcus ruber and Rhodococcus erythropolis. Biodegradation of slop oil from a petrochemical industry and bioremediation of slop oil contaminated soil.

Microbial production of surfactants and their commercial potential. Biosurfactant production by a soil Pseudomonas strain growing on polycyclic aromatic hydrocarbons. Distillery and curd whey waste as viable alternative sources for biosurfactant production. Structure of a rhamnolipid from Pseudomonas aeruginosa.

The influence of vegetable oils on biosurfactant production by Serratia mercescens. Emulsification of hydrocarbons by subsurface bacteria. Microbial surfactants: a review. Oleo Sci. Surfaceactive compounds from microorganisms. Microbial Processes for Bioremediation. Hinchee, C. Vogel y F. Brockman, Ed. Batelle Press, Columbus, Ohio. Pseudomonas aeruginosa biosurfactant production in continuous culture with glucose as carbon source.

Busquets M. Aqueous solution of the paraffinchains salts: a study in micelle formation. Bioremediation of contaminated soils. Formation of rhamnolipid by Pseudomonas aeruginosa and its function in hydrocarbon fermentation. A halotolerant biosurfactant producing Bacillus species potentially useful for enhanced oil recovery. Microbial production of biosurfactants and their importance.


Bacillus licheniformis

The plant growth promoting model bacterium FZB42 T was proposed as the type strain of Bacillus amyloliquefaciens subsp. Dendrograms based on complete rpoB nucleotide sequences and on core genome sequences, respectively, clustered into a clade consisting of three tightly linked branches: 1 B. The three monophyletic clades shared a common mutation rate of 0. Due to these results, we propose that the B.





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