Board index Aquaria Topics Foods and Nutrition Shelf life frozen food?

Shelf life frozen food?

Discuss fish foods and nutrition here.

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Post Fri May 22, 2015 7:58 pm
lifelinefish Level 7 Member
Level 7 Member

Posts: 882
Location: chaska
I am wondering if there is a shelf life for frozen food in the bubble packs? If so what's a safe period of time to use?
Thanks

Post Sat May 23, 2015 11:50 pm
Passionfish Level 20 Member
Level 20 Member

Posts: 12039
Location: apple valley, mn
Proteins in seafood begin to change after six months in frozen state. The changes are related to how the protein is folded (natural or normal folding). Proteins unfold and water molecules bind to muscle proteins at different rates.
Lipids may also become oxidized when seafood or fresh water fish are frozen. Oxidation of lipids will definite change taste or flavor. These lipids may also react with proteins resulting in changes in texture and taste.

Not all protein in fish food comes from seafood or fresh water fish meaning that other proteins and lipids may remain unaltered in frozen state.

Further, there are no studies to determine if fish consuming these altered proteins and lipids are able to digest what they are consuming. It is unlikely any studies to determine if consuming older frozen foods will ever be conducted.


IMO, anything older than six months may have limited nutritional value.
Like a complete unknown

Post Sun May 24, 2015 1:25 pm
lifelinefish Level 7 Member
Level 7 Member

Posts: 882
Location: chaska
Thanks Bob. In the garbage it goes.


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