In article <4hkoco$s0i at milo.mcs.anl.gov>, mark_fuller at qmgate.anl.gov
>>Can someone tell me what proteose peptone is?
You're not in need of a DIFCO manual, as there are other providers of it.
Proteose peptone is a special mixture of proteolytically digested peptones
containing a very high amount of high molecular weight peptides (MW
partly > 4000 D). It is used in the Elek-Ouchterlony test for the
identification of toxine producing Corynebacterium diphteriae strains and
for the toxine detection in cultures of Staphyllococcus ssp., Clostridium
ssp. and Salmonella ssp.
In addition, bacteria with varying need for nutritions can be grown on
media prepared with proteose peptone (e. g. Neisseria ssp.,
Corynebacterium ssp. and Histoplasma). I wouldn't consider it a good idea
to substitue by some other peptone