Whey Protein Isolate (WPI)
Origin: Derived from milk using a process that removes fat and lactose.
Also Known As:
Overview: Whey protein isolate is a dietary supplement and food ingredient created by separating components from whey. It contains a higher percentage of pure protein than whey concentrates and whey hydrolysates. It can be pure enough to be virtually lactose free, carbohydrate free, fat free, and cholesterol free.
It is highly bioavailable, is very quickly absorbed into the body, and has a high concentration of branched-chain amino acids (BCAAs) which helps fuel working muscles and stimulate protein synthesis.
What is Whey Protein: Whey protein is a mixture of proteins isolated from whey, which is the liquid part of milk that separates during cheese production.
Milk actually contains two main types of protein: casein (80%) and whey (20%).
Whey is found in the watery portion of milk. When cheese is produced, the fatty parts of the milk coagulate and the whey is separated from it as a byproduct.
If you’ve ever opened a yogurt container to see liquid floating on top — that’s whey. Cheesemakers used to discard it before they discovered its commercial value.
After being separated during cheese production, whey goes through various processing steps to become what people generally recognize as whey protein — a powder that is added to shakes, meal replacements and protein bars.
Whey protein doesn’t taste very good on its own, which is why it’s usually flavored. Chocolate-, vanilla- and strawberry-flavored powders are popular.
It’s important to read the ingredients list, as some products may have unhealthy additives like refined sugar.
Taking whey protein is a convenient way to add protein on top of your daily intake.
This can be important for bodybuilders and gym enthusiasts, as well as people who need to lose weight or are simply lacking protein in their diet.
Most flavored whey proteins are also rather delicious and can be used to add an incredible taste to healthy recipes like smoothies.