Whey Protein Isolate
Whey protein isolate (WPI) is one of the most popular protein supplements on the market due to its high protein content. WPI has gone through a filtering process where excess carbohydrates and fats are removed, resulting in a supplement that has a 90% protein content. WPI is easily digested and only includes trace amounts of lactose. Favoured by bodybuilders and individuals who are in a dieting phase, WPI provides a higher protein content when consumed in a shake and allows for more carbohydrates and fats to be saved for main meals.
Whey is the watery part of milk that separates from the curds during the process of cheese making. Whey protein concentrate (WPC) is the initial byproduct of this process. WPC contains more carbohydrates and fat than WPI as it is in a more natural state and is less refined. WPC has a higher lactose content, so it is not recommended for athletes who are sensitive to dairy.
As WPI is typically lower in calories than WPC, it can help support your body composition goals. The key to weight loss is being in a calorie deficit and opting for a lower-calorie protein powder may assist you with sticking to your daily macro nutrient targets. The low carbohydrate formula also allows your body to quickly and easily absorb the protein for muscle repair and growth. WPI also naturally contains a higher yield of BCAAs, supporting maximum recovery post-workout.
WPI has a very smooth consistency when mixed with water. In comparison to WPC, WPI typically has less flavour and is not as thick due to having a lower carbohydrate and fat content. If you do not like the flavour or texture of WPI in a shake form, try adding it to oatmeal, smoothies, or yoghurt for a high protein meal or snack.