Nigal, I just finished a container of that (GNC) and was considering the same from Walmart. GNC is expensive and a good drive, unless I'm going to be close for something else, and was wondering what the "real" difference would be?
What is the difference between whey protein concentrate and whey protein isolate?
First of all both concentrate and isolate are made using the same ultra filtration technology. However during the process of ultra filtration it is possible to vary the amount of filtration units the whey passes through. By varying the time of processing and filtration units it is possible to make concentrates 75-85% and isolates 90%+ protein.
The whey protein isolate takes longer to produce because it requires more time and extra filtration. During which, nearly all fat and lactose are removed.
The typical specifications for a protein isolate are:
Protein 90%
Fat 0.5%
Lactose 0.5%
The typical specifications for a high quality protein concentrate are:
Protein 80-85%%
Fat 5-8%
Lactose 4-10%
Walmart stuff
Body Fortress Super Advanced Whey Protein Powder, Cookies N' Creme*2 lbs (907 g)
100% Premium Whey Protein
Over 7 grams of BCAAs*
Crystalline Taurine
Lean Mass Activators*
Glutamine
Or GNC brand
GNC Pro Performance 100% Whey Protein, Vanilla*5 lb
Natural Source of BCAA
20 Grams of High-Quality Protein Source
Quick Dissolving, Easy-to-Mix