Yeast Extract Biodegradation

[I. Richard Schaffner, Jr.]

Can someone please recommend a reference(s) or offer an explanation on
the pathway of yeast extract biodegradation under anoxic (~0.0 mg/l
dissolved oxygen), chemically reducing (<55 mV ORP) conditions in an
aqueous setting devoid of significant nitrate or sulfate at STP?  Any
comments, explanations, and/or speculations would also be welcome! 
Thanks!!

(If you could please send any responses to me via e-mail and post them
to the newsgroup as well, I would very much appreciate it).

Regards,

I. Richard Schaffner, Jr., P.G. 
Technical Specialist, GZA GeoEnvironmental, Inc. (http://www.gza.net)
Moderator, Bioremediation Discussion Group (http://biogroup.gzea.com)
E-mail:	rschaffner at gzea.com
Phone:	603.623.3600
Fax:	603.624.9463