Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/19762
Tipo: Artigo
Título: Unexplored Brazilian oceanic Island host high salt tolerant biosurfactant-producing bacterial strains
Autor(es): Silva, Fábio Sérgio Paulino da
Pylro, Victor Satler
Fernandes, Pericles Leonardo
Barcelos, Gisele Souza
Kalks, Karlos Henrique Martins
Schaefer, Carlos Ernesto Gonçalves Reynaud
Tótola, Marcos Rogério
Abstract: We aimed to isolate biosurfactant-producing bacteria in high salt conditions from uncontaminated soils on the Brazilian oceanic island, Trindade. Blood agar medium was used for the isolation of presumptive biosurfactant-producing bacteria. Confirmation and measurements of biosurfactant production were made using an oil-spreading method. The isolates were identified by fatty acid profiles and partial 16S rRNA gene sequence analysis. A total of 14 isolates obtained from the 12 soil samples were found to produce biosurfactants. Among them, two isolates stood out as being able to produce biosurfactant that is increasingly active in solutions containing up to 175 g L−1 NaCl. These high salt tolerant biosurfactant producers are affiliated to different species of the genus Bacillus. Soil organic matter showed positive correlation with the number of biosurfactant-producing bacteria isolated from our different sampling sites. The applied approach successfully recovered and identified biosurfactant-producing bacteria from non-contaminated soils. Due to the elevated salt tolerance, as well as their capacity to produce biosurfactants, these isolates are promising for environmental biotechnological applications, especially in the oil production chain.
Palavras-chave: Trindade island
Oceanic islands
Biosurfactants
Bacillus
Editor: Extremophiles
Tipo de Acesso: Springer Japan
URI: https://doi.org/10.1007/s00792-015-0740-7
http://www.locus.ufv.br/handle/123456789/19762
Data do documento: 21-Fev-2015
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