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Re: sulfur-reducing bacteria




Apparently while already asleep I wrote:

> Their metabolism is fairly normal; they obtain energy by oxidizing
> carbon, for which they need an electron donor.  Aerobic bacteria use
> oxygen to provide the electron, but sulfate-reducing bacteria use
> sulfate.  They produce reduced sulfur compounds, including hydrogen
> sulfide and some sulfur-bearing organics, and it's those products that
> stink.

This is mostly wrong.  Sulfate is the electron receptor, not the donor. 
I'm not sure but I think the electrons are obtained from hydrogen gas,
which is produced in a fermentation reaction.  The noticable products
are reduced sulfure compounds, including hydrogen sulfide and some
sulfur-bearing organics.  Those stink.


Roger Miller