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Selection of biosurfactan/bioemulsifier-producing bacteria from hydrocarbon-contaminated soil BJM
Viramontes-Ramos,Sabina; Portillo-Ruiz,Martha Cristina; Ballinas-Casarrubias,María de Lourdes; Torres-Muñoz,José Vinicio; Rivera-Chavira,Blanca Estela; Nevárez-Moorillón,Guadalupe Virginia.
Petroleum-derived hydrocarbons are among the most persistent soil contaminants, and some hydrocarbon-degrading microorganisms can produce biosurfactants to increase bioavailability and degradation. The aim of this work was to identify biosurfactant-producing bacterial strains isolated from hydrocarbon-contaminated sites, and to evaluate their biosurfactant properties. The drop-collapse method and minimal agar added with a layer of combustoleo were used for screening, and positive strains were grown in liquid medium, and surface tension and emulsification index were determined in cell-free supernantant and cell suspension. A total of 324 bacterial strains were tested, and 17 were positive for the drop-collapse and hydrocarbon-layer agar methods. Most of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biosurfactants; Bioemulsifiers; Soil microbiota; Hydrocarbon contamination.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000300017
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