Do canned vegetables have all the nutrients of fresh or frozen?
It is true that the nutrient content of canned and frozen fruits and vegetables is comparable to fresh. Canned and frozen fruits and vegetables are processed immediately after picking. Therefore, nutrient losses that can occur in storage are minimized. It is true that some nutrients can be lost during processing, but the amounts are very small. You can find more information at http://fruitvegquality.ucdavis.edu/facultypublications.htm