Oxygen requirements for prokaryotes

Yanick Matteau MATTEAU at biopro.polymtl.ca
Wed Sep 11 20:21:43 EST 1996

Hi Shawn,

You need to prepare a mixture with 5% oxygen to cultivate microaerophilic
When you  reduce pressure, you don't change molecule ratio but the number
of molecules changes.

Yanick Matteau, microbiologist
NSERC Industrial Chair on Site Bioremediation
Ecole Polytechnique de Montreal, Canada
matteau at biopro.polymtl.ca

In article <01bb9ec0$7acd3980$3a384dcf at default>, "Shawn O'Malley"
<somalley at net1plus.com> wrote:

> I just attended my second lecture to intro to Microbiology. In lecture I
> learned that there are certain bacteria that can only reproduce in an
> oxygen concentration of about 5%.
> Since our atmosphere is about 21% oxygen could you just take a vessel and
> reduce the pressure to .25 atmospheres to achieve this 5%, or is it
> necessary to prepare a special mixture of hydrogen, nitrogen, and the
> required 5% oxygen.  Just curious.

Yanick Matteau
MATTEAU at mac2.ccbpas.polymtl.ca

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