Difference between whey protein isolate and protein powder?

What is the difference between the two? And where can you buy them from in South Australia?Difference between whey protein isolate and protein powder?
';protein powder'; simply implies that it's a powder of a protein source. Could be soy, whey, egg, casein, milk protein, rice protein, or any combination of them.





Whey (the clear stuff on the top of a yogurt container) has a very high quality protein (the body can use it well) but it doesn't have much TOTAL protein.. so it's gathered together and concentrated.





Your lowest grade whey protein is going to be whey protein concentrate.. which is (I *THINK*) 30-85% protein... Most protein companies sell around 80% for their protein CONCETRATE.





so if you were buying 1kg (2.2lbs) of protein, you'd have about 800gm protein, and 200gm of ';not-protein'; (lactose, fat, ash) before they went and flavored/sweetened it.





Whey ISOLATE is usually 90% or higher protein content, with some of the better ones being as high as 95-98%





so that same kilogram of protein would get you 950-980gm of protein with naturally occurring fat/carb/ash.





WPC is very economical and most people can use it with no problem... those of us who are lactose intolerant are more inclined to using Whey Isolates instead of concentrates (and our significant others thank us for it)





As for Australia, sorry.. from the USA, so I can't be much help there.