What is proteose peptone (Difco)?

Kurt Sims sims at acs.ucalgary.ca
Thu Mar 7 09:33:05 EST 1996

In article <4hkoco$s0i at milo.mcs.anl.gov>, Mark Fuller
<mark_fuller at qmgate.anl.gov> wrote:

> Can someone tell me what proteose peptone is?  Is it like pancreatic 
> digest of casein or something.  I don't have a Difco manual or I'd look 
> it up myself.  I'm want ot know if a media recipe containing proteose 
> peptone can be substituted with something else.
> Thanks
> Mark Fuller, Ph.D.

All I could find is that it is a peptic digest of animal tissue.  There
are three different ones from Difco.  Proteose Peptone Difco, Proteose
Peptone No.2 Difco and Proteose Peptone No.3 Difco.

According to the manual No.3 is the best of the three for nutrition in
culturing fastidious organisms.

Sorry, I don't know of any substitutes for it.


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