Re: Radiation Sterilization

[Charles Thomas <chatho@roadrunner.com>]

Don is correct.  For Example the is a bacteeria, micrococcus radiodurans,
that requires megarad doses to inactivate.



At 09:41 AM 5/23/96 -0500, you wrote:
>The dose required appears to depend on (1) the amount of reduction in the
>population of bacteria that you want to achieve and (2) the inherent 
>susceptibility to radiation of the microorganisms you have to destroy.
>Your researcher may have to experiment to determine the proper dose.  
>Note also that higher doses might produce radiolytic by-products that 
>could interfere with the research.  
>
>A review of irradiation in the processing of foods appears in the May 1994
>issue of Food Science & Technology, pp124-144.  This may provide some 
>helpful insights.  One of the articles mentions that certain species of Vibrio
>bacteria can be reduced by "5 to 10 orders of magnitude" with a dose "as low
>as 1 kGy"   
>
>Hope this helps - gotta run.
>
>___________________________________________________________________
>
>Don Jordan                          Tel. (312) 702-6299
>Office of Radiation Safety          Fax        702-4008
>The University of Chicago           email: don@radpro.uchicago.edu
>1101 East 57th Street, Room 11
>Chicago, Illinois  60637  
>                -- Any opinions are the author's -- 
>
>
>
>
Charles C. (Tommy) Thomas
3373 Avenida San Marcos
Santa Fe, NM  87505-9210
Phone/Fax 505-471-9048
e-mail chatho@roadrunner.com 
Approved by the Boss - M. S. Thomas