Estimated reading time: 4 minutes
Whey protein isolate is derived from whey, which is a milk-based protein. It is a purer form of protein than concentrate, and it contains more protein and less fat and lactose.
We consider whey protein isolate to be a high-quality nutrient source. Furthermore, studies show that it is effective in promoting muscle growth and recovery.
Where does it come from?
Roughly 20% of milk is whey protein and the other 80% is made up of slower-digesting casein proteins. Both are high-quality proteins because they contain all the amino acids needed by your body.
In this article, we will look at the differences and similarities between the two and which one is better for you.
Whey protein isolate vs. whey protein concentrate: What is the difference and does it really matter?
Manufacturers produce whey concentrate powder by separating whey and casein. The resulting product will have a high concentration in terms of protein while containing carbohydrates and fats that are not desired by some users. Some people prefer isolates due to their low-level intake requirements per serving size compared with concentrates.
Standard WPC blends result in around 80% protein content. On the other hand, standard whey protein isolate profiles contain 90% plus protein.
Whey protein isolates are the highest quality form of protein. Athletes and bodybuilders use it as a highly effective supplement. The production process for this type of whey, results in higher levels per serving, while also reducing fat or carbohydrate content to make it more efficient than other forms like casein sources.
This table shows the key differences between a standard whey protein isolate and concentrate supplement per 100-calorie serving.
What are the benefits?
Whilst there are statistical differences and they have different nutritional values, the general consensus is that they basically do the same job. The major benefit of isolate over concentrate is the slight difference in fat content and that it is more suitable for lactose intolerant people. On the other hand, the concentrate is usually slightly cheaper
What to look out for when buying whey protein isolate?
Unfortunately many unscrupulous or profit-driven providers add bulking agents to their products which changes the nutritional values per serving. Always try to go for brands that have proof of independent testing.
Why are there so many brands and is there really a difference between them?
As with most products, there is sometimes very little difference in the products themselves. Brands tend to differentiate themselves with packaging and marketing. Whey protein isolate is no different.
Some brands will offer a different taste to others as a result of the blending options or processing methods but should provide the same levels of protein as indicated on the nutrient labelling.
Some people prefer M&S organic milk whilst others prefer Cravendale, similar differences apply to whey.
Which whey protein isolate is the best?
Ultimately the choice is yours and the majority of brands are more than likely using the same manufacturers or sources from the same suppliers.
Here is a list of considerations for you to think about when choosing a brand:
- Flavours and additional ingredients
- Quality of source (organic, grass-fed etc.)
- Independent testing or certification
- Production methods (some manufacturers achieve low pricing by paying low wages and sub-optimal working conditions)
- Packaging (recyclable, sustainable sources)
Final thoughts
If you’re looking for a cheaper way to get your protein, then whey concentrate may be the answer. This product has been proven as being just about equal in quality and amount of milk proteins compared with isolates but at much lower costs!
If you’re trying to limit your intake of fat, carbs or lactose then it might be worth considering whey isolate instead.
Ultimately the benefits of both types of whey are undeniable, whether it’s for muscle or bone health.
What are your thoughts regarding whey isolate? Would you recommend it over concentrate? Let us know your views in the comments below.
