Biosurfactant production by Rhodococcus erythropolis and its application to oil removal

Detalhes bibliográficos
Autor(a) principal: Pacheco,Graziela Jardim
Data de Publicação: 2010
Outros Autores: Ciapina,Elisa Mara Prioli, Gomes,Edelvio de Barros, Pereira Junior,Nei
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Journal of Microbiology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000300019
Resumo: The influence of different nutrients on biosurfactant production by Rhodococcus erythropolis was investigated. Increasing the concentration of phosphate buffer from 30 up through 150 mmol/L stimulated an increase in biosurfactant production, which reached a maximum concentration of 285 mg/L in shaken flasks. Statistical analysis showed that glycerol, NaNO3,MgSO4 and yeast extract had significant effects on production. The results were confirmed in a batchwise bioreactor, and semi-growth-associated production was detected. Reduction in the surface tension, which indicates the presence of biosurfactant, reached a value of 38 mN/m at the end of 35 hours. Use of the produced biosurfactant for washing crude oil-contaminated soil showed that 2 and 4 times the critical micellar concentration (CMC) were able to remove 97 and 99% of the oil, respectively, after 1 month of impregnation.
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spelling Biosurfactant production by Rhodococcus erythropolis and its application to oil removalBiosurfactant productionoil removalRhodococcus erythropolisThe influence of different nutrients on biosurfactant production by Rhodococcus erythropolis was investigated. Increasing the concentration of phosphate buffer from 30 up through 150 mmol/L stimulated an increase in biosurfactant production, which reached a maximum concentration of 285 mg/L in shaken flasks. Statistical analysis showed that glycerol, NaNO3,MgSO4 and yeast extract had significant effects on production. The results were confirmed in a batchwise bioreactor, and semi-growth-associated production was detected. Reduction in the surface tension, which indicates the presence of biosurfactant, reached a value of 38 mN/m at the end of 35 hours. Use of the produced biosurfactant for washing crude oil-contaminated soil showed that 2 and 4 times the critical micellar concentration (CMC) were able to remove 97 and 99% of the oil, respectively, after 1 month of impregnation.Sociedade Brasileira de Microbiologia2010-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000300019Brazilian Journal of Microbiology v.41 n.3 2010reponame:Brazilian Journal of Microbiologyinstname:Sociedade Brasileira de Microbiologia (SBM)instacron:SBM10.1590/S1517-83822010000300019info:eu-repo/semantics/openAccessPacheco,Graziela JardimCiapina,Elisa Mara PrioliGomes,Edelvio de BarrosPereira Junior,Neieng2010-06-02T00:00:00Zoai:scielo:S1517-83822010000300019Revistahttps://www.scielo.br/j/bjm/ONGhttps://old.scielo.br/oai/scielo-oai.phpbjm@sbmicrobiologia.org.br||mbmartin@usp.br1678-44051517-8382opendoar:2010-06-02T00:00Brazilian Journal of Microbiology - Sociedade Brasileira de Microbiologia (SBM)false
dc.title.none.fl_str_mv Biosurfactant production by Rhodococcus erythropolis and its application to oil removal
title Biosurfactant production by Rhodococcus erythropolis and its application to oil removal
spellingShingle Biosurfactant production by Rhodococcus erythropolis and its application to oil removal
Pacheco,Graziela Jardim
Biosurfactant production
oil removal
Rhodococcus erythropolis
title_short Biosurfactant production by Rhodococcus erythropolis and its application to oil removal
title_full Biosurfactant production by Rhodococcus erythropolis and its application to oil removal
title_fullStr Biosurfactant production by Rhodococcus erythropolis and its application to oil removal
title_full_unstemmed Biosurfactant production by Rhodococcus erythropolis and its application to oil removal
title_sort Biosurfactant production by Rhodococcus erythropolis and its application to oil removal
author Pacheco,Graziela Jardim
author_facet Pacheco,Graziela Jardim
Ciapina,Elisa Mara Prioli
Gomes,Edelvio de Barros
Pereira Junior,Nei
author_role author
author2 Ciapina,Elisa Mara Prioli
Gomes,Edelvio de Barros
Pereira Junior,Nei
author2_role author
author
author
dc.contributor.author.fl_str_mv Pacheco,Graziela Jardim
Ciapina,Elisa Mara Prioli
Gomes,Edelvio de Barros
Pereira Junior,Nei
dc.subject.por.fl_str_mv Biosurfactant production
oil removal
Rhodococcus erythropolis
topic Biosurfactant production
oil removal
Rhodococcus erythropolis
description The influence of different nutrients on biosurfactant production by Rhodococcus erythropolis was investigated. Increasing the concentration of phosphate buffer from 30 up through 150 mmol/L stimulated an increase in biosurfactant production, which reached a maximum concentration of 285 mg/L in shaken flasks. Statistical analysis showed that glycerol, NaNO3,MgSO4 and yeast extract had significant effects on production. The results were confirmed in a batchwise bioreactor, and semi-growth-associated production was detected. Reduction in the surface tension, which indicates the presence of biosurfactant, reached a value of 38 mN/m at the end of 35 hours. Use of the produced biosurfactant for washing crude oil-contaminated soil showed that 2 and 4 times the critical micellar concentration (CMC) were able to remove 97 and 99% of the oil, respectively, after 1 month of impregnation.
publishDate 2010
dc.date.none.fl_str_mv 2010-10-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000300019
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000300019
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1517-83822010000300019
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Microbiologia
publisher.none.fl_str_mv Sociedade Brasileira de Microbiologia
dc.source.none.fl_str_mv Brazilian Journal of Microbiology v.41 n.3 2010
reponame:Brazilian Journal of Microbiology
instname:Sociedade Brasileira de Microbiologia (SBM)
instacron:SBM
instname_str Sociedade Brasileira de Microbiologia (SBM)
instacron_str SBM
institution SBM
reponame_str Brazilian Journal of Microbiology
collection Brazilian Journal of Microbiology
repository.name.fl_str_mv Brazilian Journal of Microbiology - Sociedade Brasileira de Microbiologia (SBM)
repository.mail.fl_str_mv bjm@sbmicrobiologia.org.br||mbmartin@usp.br
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