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oxygen absorber


Oxygen Absorber
Use Information

Oxygen Absorber Page

There are several different formulations for oxygen absorbers depending on whether food is frozen, refrigerated or destined for long-term storage.  The most critical component for evaluation is the water activity level (AW). All dry grain, legumes, milk powder and pasta products have very low water activity levels.  Thus, they require an oxygen absorber which has rapid activation.  These oxygen absorbers are working within seconds of the package being opened.  When packaging food for long-term storage, you should use the entire contents of one sealed vacuum packet bag within 15 minutes.  If you know that you will be unable to use the entire quantity, set those packets aside in a small, clean, and dry glass jar with a secure screwtop lid.  ( A jam or pickle jar will work fine.)

If the jar is much larger than the O2's that you have then place some rice into the jar to take up some of the air space.  This will minimize the amount of oxygen that the stored O2's will absorb.  Or, you can use a sealer and reseal the O2 bag. DO NOT PUT THE REMAINDER IN A ZIP LOCK BAG. A ZIP LOCK BAG IS NOT A MOISTURE BARRIER NOR AN OXYGEN BARRIER. YOUR O2'S WILL GO BAD WITHIN A SHORT PERIOD OF TIME. PLACING THEM IN A GLASS JAR IS THE BEST OPTION. Also note that there is a small pill in the bag with the oxygen absorbers that indicated the condition of the absorbers.  If this pill is BLUE while sealed in the bag they are no longer any good.  Once you open the bag the white or pink pill will turn blue but once you reseal the bag or place them in a jar the pill will turn white or pink again.

Remember that the air in your jar or in your food storage container is not all oxygen.  Therfore, the oxgen absorber will not necessarilly pull a tight vacum on the food.  For example, if your food is in a mylar bag, some foods will have more air space and therefore more oxgen between the grains or particles and will become vacum tight against the mylar bag.  But, that may depend on how close you seal the bag to the food which would make one bag different from the other by having more air in it.  If you are using a bucket without a mylar then the O2's would pull a vacum on the lid.


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