A question about mylar vs cans and shelf life

[yorkiebeebs]

I have #10 cans of freeze dried foods and they have a shelf life of 25yrs or longer. Just recently I ordered some freeze dried samples in mylar bags that are sealed in a bucket and they say the shelf life is 7 years. I don't understand that because I understood that sealing in a mylar bag was as effective as the cans.

Can someone explain this to me. I've been trying to contact the Shelf Reliance person who can answer this question and the line is constantly busy.

[NeuroTypical]

Are they different foods? Not everything lasts 25 years. I'm no expert, but I've heard that foods containing fats and oils tend to not last as long. It's one reason why white rice is so popular a storage item, but whole grain brown rice isn't. The brown rice goes rancid after a while.

[yorkiebeebs]

The ones I'm wondering about are the same products that are the same company and the only difference is one is in a #10 can and the others are in mylar bags sealed in a bucket.

[lindapruss]

hello: I have been reading quite a bit and it appears that oxygen and lack of it is the key to longer shelf life, as others have indicated due to oil content (rancidity). I have been taking the bulk honeyvillegrains and repackaging into the large mylar bags WITH an oxygen absorber in it. Then the bags go into large 55 gal barrels. So far so good. i use my iron to close the bags and use 500cc absorbers up to 2,000cc (amazon.com) . I remove as much air as i can then seal. When I look a few hours later the bags collapse down. I hope this helps.