[Homeroast] Using CO2 to preserve freshness?

Allon Stern allon at radioactive.org
Wed Apr 21 05:11:29 CDT 2010

On Apr 21, 2010, at 1:11 AM, Ryan M. Ward wrote:

> Anybody consider trying to use Helium instead of CO2? Helium is a noble gas and wont react with the chemicals in the coffee.

This is true, but
1) as Ray pointed out, the evolving CO2 will displace the helium
2) It isn't just the chemicals in the coffee reacting with the ambient oxygen that stales the coffee - it's the chemicals in the coffee reacting with the OTHER chemicals in the coffee.

Your best bet is slowing down those reactions; you can't practically separate out all the chemicals from each other without filing tons of patents, and using the technology to extract coffee flavors, then reconstitute them, and produce a dreadful product that you could probably sell to the masses and make millions on.


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