Factor #1: The Temperature:
Temperature has more to do with how long well dried foods store than anything else. The USDA states, "Each 5.6 C. (10.08F) drop in temperature doubles the storage life of the seeds." Obviously, there is a limit as to how far this statement can be taken. However I expect it basically holds true from room temperature down to freezing. No doubt, the inverse could also be considered true. "Each 5.6C. (10.08F) rise in temperature halves the storage life of seeds." This theory holds true for non-garden seeds as well.
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Storage Life Differences
Depending on Temperature
Constant Storage Storage life
Temp in degrees F In Years
---------------- ------------
39.76 - - - 40
49.84 - - - 30
59.92 - - - 20
70.00 - - - 10
80.08 - - - 5
90.16 - - - 2.5
100.24 - - 1.25
Note: the above chart is not for a specific food but shows the relationship between temperature and storage life.
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