What is whey whey?

Whey is the fluid by-product resulting from the precipitation of proteins in milk. The precipitation can be facilitated by the growth of microorganisms (e.g., cheese whey), addition of acid (acid casein manufacture), or by the addition of enzymes (rennet casein manufacture).

What is the highest percentage of protein in whey protein?

The most common protein levels in whey protein concentrates are 35%, 55%, and 80%. The highest form of purification yields whey protein isolates with > 90% protein on a dry weight basis. The by-products of protein concentration are lactose and calcium-rich milk minerals.

What percentage of whey is sweet?

A majority of the whey produced globally is sweet whey. Approximately 94% of the whey produced in the United States is sweet whey and the remaining 6% is acid whey (Anon, 2002 ).

What percentage of whey protein is used in the dairy industry?

For WPCs, 42.4% was used by the dairy industry, while 23.4% was used in nutraceuticals, pharmaceuticals, and special dietary products, and 16.2% in infant formulae. Whey is defined in the Unites States Code of Federal Regulations as … the liquid substance obtained by separating the coagulum from milk, cream, or skim milk in cheesemaking.