Whey protein is derived from milk as a cheese-making byproduct, primarily composed of β-lactoglobulin, α-lactalbumin bovine serum albumin, and immunoglobulins. Common ingredients in supplements include whey protein concentrate (WPC), isolate (WPI), or hydrolysates, along with amino acids, lecithin (for blending), sweeteners, and flavoring agents.
🔹Whey Ingredients and Types:
Whey Protein Concentrate (WPC): Contains 34%–80%+ protein, with varying amounts of fat and lactose.
Whey Protein Isolate (WPI): Highly processed to contain 90%+ protein, with minimal fat and lactose.
Whey Protein Hydrolysate: Pre-digested, fast-absorbing whey.
Primary Proteins: Composed of β-lactoglobulin ($\sim$65%),
α-lactalbumin ($\sim$25%), and bovine serum albumin ($\sim$8%).
🔹Nutritional Profile:
Amino Acids: Rich in branched-chain amino acids (BCAAs) such as leucine, isoleucine, and valine, crucial for muscle growth.
Minerals: Contains calcium, phosphorus, and sodium.
Minor Components: Often contains lactose and small amounts of milkfat, especially in concentrates.