"BSackamano" wrote in message news:9ZPSd.44068$4q6.7048@attbi_s01...
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.

Since now I was in the understanding this brown tint are
ruptured cells which are destroyed in the freezing process.

And since I considered this to be beneficial for my filter feeder
animals I have not rinsed thawed food before feeding...

Now, after reading about binders like algin I have second thoughts.
But algin is derived from algae, so it sounds "safe" - go figure! ;-)