[cypher]

I put my food in a freezer bag (even if the food is already in a bag) freeze for a minimum of 48hrs but usually for at least a week. I only take out a small amount at a time & leave the rest in the freezer, if you have a really big bag of food that will last you a while it may be better to divide it up before freezing.
When defrosting it is really important that it's in an airtight bag or container so all the condensation remains on the outside of the bag & the food doesn't get damp.
It shouldn't degrade the food & shorten shelf life, it will keep for much longer in the freezer but once defrosted shouldn't be kept for longer than normal.
It may depend to some extent on how natural or processed the food is, seeds & grains freeze & defrost just fine but I'm not sure about the biscuit type bits in some foods as I don't use that kind of food.