Wheyprotein is a mixture of proteins isolated from whey, the liquid material created as a by-product of cheese production. The proteins consist of α-lactalbumin
several minor wheyproteins. Sweet whey and acid whey are similar in gross nutritional analysis. By mass both contain 93% water, about 0.8% protein, and about
amounts in whey. Together GMP and CMP make up 20-25% of wheyprotein. This makes them the third largest fraction of wheyproteinisolate, after alpha-lactalbumin