I have vacuum stored some things in 1/2 gal Ball jars using a foodsaver vacuum attachment. I have found no info on how long this will store as opposed to open air. Has BYU or anyone else done any studies on this? It would be logical that they should store longer because of the small amount of oxygen that would be available in the jar to react with the food. I realize that if you added a small oxygen absorber to the jar it would be good for 30 years and I do not expect that but I would think 10 or 15 years should be reasonable. Anyone have any thoughts??