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oil slicks and biofilms

Doug Caldwell caldwell at skyway.usask.ca
Sat Apr 8 10:07:34 EST 2000

Biofilms sometimes appear like an oil film when growing on the surface of a
stagnant pond and so they could probably also appear that way on other
surfaces.  I've worked with biofilms of Vibrio on stainless steel and they
do not appear like an oil film, but other organisms or sets of organisms
would be different.  The oil slick appearence would depend on the
chemistry, confluence, and uniformity of the exopolymer matrix.  In most
cases biofilms do not look like an oil film.  They look irregular like
"scum" or "slime".

 >I have been told that biofilms have an "oil film" appearance
 >when growing on a stainless steel surface.  Is this true?
 >Thanks in advance  for the response.

Doug Caldwell
Microbial Colonization Laboratory
Department of Applied Microbiology and Food Science
51 Campus Drive, University of Saskatchewan
Saskatoon, Saskatchewan, S7N 5A8, Canada
Voice: (306) 966-5026 (office), -5042 (colonization lab), -7704 (laser
imaging facility), 934-0711 (home)
Fax:  306-966-8898
Email:  caldwell at sask.usask.ca


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