Whey Protein Isolate (WPI) is a highly purified form of whey protein, stripped of fat, carbohydrates, and lactose. It undergoes additional filtration, typically through methods like ion-exchange or Cross-Flow Microfiltration, which ensure a higher protein content. The process is more costly due to specialized equipment. High-quality isolates retain valuable peptides, while lower-quality isolates may lack these beneficial components found in concentrated whey proteins.
