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Appl Environ Microbiol. 1982 February; 43(2): 362-366

Characterization of Nocardia amarae as a Potent Biological Coalescing Agent of Water-Oil Emulsions

William L. Cairns, David G. Cooper, James E. Zajic, Joan M. Wood and Naim Kosaric

Biochemical Engineering, Faculty of Engineering Science, The University of Western Ontario, London, Ontario N6A 5B9, Canada

ABSTRACT

Nocardia amarae grown in a liquid medium induced coalescence of emulsions which differed in type, composition of the organic phase, and structure of stabilizing emulsifiers. De-emulsifying activity varied with the type of growth medium, culture age, and postharvest treatment. Based on extraction and degradation studies, it was concluded that de-emulsifying properties are due to the bacterial cell surface. Thus, bacteria may provide a new source of de-emulsifying agents.

Present address: Office of the Dean, The College of Science, The University of Texas at El Paso, El Paso, TX 79968.

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