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  • From: "Lawrence F. London, Jr." <venaurafarm@bellsouth.net>
  • To: permaculture <permaculture@lists.ibiblio.org>
  • Subject: Re: [permaculture] The Permaculture saying, "Prepare for Disaster" and the mo...
  • Date: Tue, 01 Nov 2011 12:10:22 -0400

On 11/1/2011 12:37 AM, Douglas Woodard wrote:
Lawrence, what do you think would cause freezer burn from dry ice?

From my reading the cause of freezer burn is primarily dehydration and
secondarily oxidation, along with storage at temperatures above 0
degrees F. Very cold local temperatures don't seem to have much if
anything to do with it. A large part of the cure for meat is apparently
wrapping to prevent dehydration. With grain I doubt there would be much
of a problem with dry ice. I would expect exclusion of oxygen to be helpful.

If the Mormons recommend dry ice as Bob Waldrop says, their
recommendation is probably based on a lot of practical experience. I
would be inclined to take their word for it.

Thanks, Douglas. That's an explanation of the causes of freezer burn I wasn't aware of. I would then assume that damage to stored foods from dry ice is a non issue except for the possibility that the freeze thaw cycle affecting grain or beans in contact with the dry ice might cause damage that could result in rot. This too may be a non issue.




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