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dc.contributor.advisor Ward, C. H.
dc.creatorAllen, Phillip Glenn
dc.date.accessioned 2009-06-04T00:03:24Z
dc.date.available 2009-06-04T00:03:24Z
dc.date.issued 1992
dc.identifier.urihttps://hdl.handle.net/1911/13626
dc.description.abstract Biosurfactants produced by subsurface bacteria may potentially enhance in situ bioremediation. A study was performed to characterize the production and enhancement of production of biosurfactants by 37 gasoline-degrading bacteria isolated from a gasoline-contaminated aquifer. Surface tension and emulsification capacity of the bacterial cultures growing on unleaded gasoline vapors were determined and mean surface tension and emulsification capacity values calculated. When liquid gasoline was added to the cultures, the mean surface tension reduction of the sample population was nearly doubled, compared to the cultures using only gasoline vapors. Many of the bacterial isolates were able to grow without significant surface tension reductions or emulsification. For two select isolates, optimum ammonium sulfate concentrations for growth and biosurfactant production were determined. Addition of yeast extract enhanced biosurfactant production by the two isolates. Both isolates were shown to initiate production of biosurfactants during the stationary phase of cell growth.
dc.format.extent 105 p.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.subjectEnvironmental science
Microbiology
Biology
dc.title Biosurfactant production by gasoline-degrading bacteria from a contaminated aquifer
dc.type.genre Thesis
dc.type.material Text
thesis.degree.department Biology
thesis.degree.discipline Natural Sciences
thesis.degree.grantor Rice University
thesis.degree.level Masters
thesis.degree.name Master of Science
dc.identifier.citation Allen, Phillip Glenn. "Biosurfactant production by gasoline-degrading bacteria from a contaminated aquifer." (1992) Master’s Thesis, Rice University. https://hdl.handle.net/1911/13626.


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