Stabilization of Oil-Water Emulsions by Hydrophobic Bacteria

Author:

Dorobantu Loredana S.1,Yeung Anthony K. C.1,Foght Julia M.2,Gray Murray R.1

Affiliation:

1. Department of Chemical and Materials Engineering

2. Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada

Abstract

ABSTRACT Formation of oil-water emulsions during bacterial growth on hydrocarbons is often attributed to biosurfactants. Here we report the ability of certain intact bacterial cells to stabilize oil-in-water and water-in-oil emulsions without changing the interfacial tension, by inhibition of droplet coalescence as observed in emulsion stabilization by solid particles like silica.

Publisher

American Society for Microbiology

Subject

Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology

Reference24 articles.

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2. Atlas, R. M., and R. Bartha. 1992. Hydrocarbon degradation and oil-spill bioremediation. Adv. Microb. Ecol.12:287-338.

3. Babak, V. G., and M. J. Stébé. 2002. Highly concentrated emulsions: physicochemical principles of formulation. J. Dispersion Sci. Technol.23:1-22.

4. Briggs, T. R. 1921. Emulsions with finely divided solids. J. Ind. Eng. Chem.13:1008-1010.

5. Cooper, D. G., J. Akit, and N. Kosaric. 1982. Surface activity of the cells and extracellular lipids of Corynebacterium fascians CF15. J. Ferment. Technol.60:19-24.

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