Originally posted by Big_Andy
could it be that the poor solubility of Prolab's Whey is because it contains only Whey Protein Concentrate, not Isolates (as compared to Optimum Whey).?
Interestingly, the ingredients listed on my (recently purchased) 5 lb can of Prolab's Pure Whey are different than what they list on DPSnutrition site. Maybe the newer version became worse? Mine does not list Whey Isolates, while the description from DPSnutrition site does.
Better solubility (Of Optimum) appealed to me because I thought it correlates with better bioavailability...so right now I'm a bit disappointed with Prolab, but MAYBE results will prove me wrong.
Labels use trickery...be careful!
For example..WPC can be purchased in different grades 60, 70, and even 80% pure.
Isolates, ion exchange, and other forms (there are 5-6 now) and the WPCs above 70% have received a lot "more processing." This is not always a good thing depending on your goals and purposes!
The objective for most of these companies is to have at least 70% protein per serving size (as in a 30 gram serving having at leat 21 grams of protein)....now here is were it gets tricky.
Sometimes it is easier to buy a 60% WPC and then add the other forms...JUST TO GET THEM ON THE LABEL....in minute amouts...to bring the product up to 70%. Designer and Optimum do this.
Here is the catch.....if you have a sensitive stomach, cancer, aids, etc (sorry to group that all together)...then the higher end proteins offer more digestability and assimilation. You basically get MORE protein and less Ca-Ca per serving,
If your goal is size and strength, tissue repair and resynthesis....then the lower end proteins like the Optimum and Prolab we are talking about are excellent. You see...the Ca-Ca is were some of the more interesting "growth factors" of the protein are found!
Hope that made sense!
DP