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	Provedor de dados Electron. J. Biotechnol. (2) Autor Diniz Rufino,Raquel (2) Asfora Sarubbo,Leonie (1) Farias,Charles B.B. (1) Ferreira Silva,Aline (1) Gomes Souza,José Edson (1) Moura Luna,Juliana (1) Moura de Luna,Juliana (1) Sarubbo,Leonie Asfora (1) de Campos Takaki,Galba Maria (1) Mais... Palavra-chave Biosurfactant (1) Candida lipolytica (1) Lipopeptide (1) Microbial surfactant (1) Nanoscale materials (1) Pseudomonas aeruginosa (1) Surface tension (1) Toxicity (1) Mais... Tipo do documento Journal article (2) Ano 2014 (2) País Chile (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Characterization and properties of the biosurfactant produced by Candida lipolytica UCP 0988 Electron. J. Biotechnol. Diniz Rufino,Raquel; Moura de Luna,Juliana; de Campos Takaki,Galba Maria; Asfora Sarubbo,Leonie. Background: Biotechnological processes are costly, especially for the production of biosurfactants. The successful production of a biosurfactant is dependent on the development of processes using low cost raw materials. Considering the importance of the characteristics of a biosurfactant to facilitate its industrial application, the properties of the biosurfactant produced by Candida lipolytica through previously optimized medium have been established. Results: The yeast was grown for 72 h to determine the kinetics of growth and production. The surface tension of the cell-free broth was reduced from 55 to 25 mN/m. The yield of biosurfactant was 8.0 g/l with a CMC of 0.03%. The biosurfactant was characterized as an anionic lipopeptide composed of 50%... Tipo: Journal article Palavras-chave: Biosurfactant; Candida lipolytica; Lipopeptide; Surface tension; Toxicity. Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582014000100006 Synthesis of silver nanoparticles using a biosurfactant produced in low-cost medium as stabilizing agent Electron. J. Biotechnol. Farias,Charles B.B.; Ferreira Silva,Aline; Diniz Rufino,Raquel; Moura Luna,Juliana; Gomes Souza,José Edson; Sarubbo,Leonie Asfora. Background A biosurfactant produced by Pseudomonas aeruginosa cultivated in a low-cost medium formulated with 2.5% vegetable oil refinery residue and 2.5% corn steep liquor and distilled water was employed to stabilize silver nanoparticles in the liquid phase. The particles were initially synthesized using NaBH4 as reducing agent in biosurfactant reverse micelles and were extracted from the micellar solution to disperse in heptane. Results A silver particle size in the range of 1.13 nm was observed. The UV-vis absorption spectra proposed that silver nanoparticles could be formed in the reverse micelles and relatively stabilized for at least 3 months without passivator addition. The Transmission Electron Microscope (TEM) shows that the silver nanoparticles... Tipo: Journal article Palavras-chave: Microbial surfactant; Nanoscale materials; Pseudomonas aeruginosa. Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582014000300003 Registros recuperados: 2 Primeira ... 1 ... Última

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