Why do they add algin to frozen food ?

I don't know, but I've been rinsing frozen foods for a while now. I defrost
it in some RODI and the water has a strong orange or brown tint, depending
on the food. I pour that into a medium density fish net and rinse with a
glass or two of RODI. Then I invert the net and pour more RODI over it and
back into the glass. The water ends up being clear with large floating food
particles.

"Pszemol" wrote in message
...
Please read this: http://www.sfbb.com/whyfeedfrozen.html
I know they call it "binder", but why do we need binders?
I was in understanding that when purchasing frozen krill
or artemia I am buying krill+water only, no additives...
Are they any adverse effects of adding large amounts of
algin and other binders to our tanks ?