[quote]Bill Roberts wrote:
Actually there is quite a bit to this but as the most interesting part of what I know about it is from in-house information, I’m not sure I should just blab it.
Without going into the stuff that is new information, certainly your concern about whether the amount of protein is a greater amount or lesser is a valid one, though a higher quality product can in fact have more of some highly useful fractions in a smaller gram-amount serving.
But just looking at the question of how much protein, it’s certainly not necessary to worry about concentrate vs isolate for this problem. The grams of protein given on the label will answer that for you.
On the general question of whether a WPC can be good: absolutely. It can in fact be better than an isolate. There are a number of factors involved. (It’s also possible of course for a given WPC to be crappy.)[/quote]
Supposedly the ion exchange method of filtering protein to a degree classifiable as isolate results in many of the immunglobulins being denatured and losing their useful characteristics as immune enhancers, etc…
How true is that? And if it is true, are other methods of obtaining isolate grade whey protein, such as cross-flow microfiltration, cold-filtered microfiltration, etc effective methods of preserving these microfractions?