What is the difference between whey isolate and whey hydroisolate?

Whey protein isolate and whey protein hydrolysate are two different forms of whey protein that differ in their processing method and composition.

Whey Protein Isolate

• Protein content: Very high, usually over 90% protein.
• Lactose content: Almost none or very low lactose, making it suitable for people who are lactose intolerant.
• Fat content: Very low or almost zero.
• Processing: Whey undergoes a filtration process that removes most of the fat and lactose, retaining an almost pure protein form.
• Usage: Due to its purity, it is often used in sports nutrition when a high protein content and low calories are needed.

Whey Protein Hydrolysate

• Protein content: Similar or slightly lower than isolate (about 80–90%).
• Processing: This is a whey isolate or concentrate that undergoes an additional hydrolysis process. This process breaks down protein chains into smaller peptides. As a result, the proteins become easier and faster to absorb.
• Usage: Due to its rapid absorption, hydrolysate is popular among athletes after intense training because it quickly supplies the body with amino acids.

Main differences:

1. Processing method: Hydrolysate is additionally hydrolyzed, while isolate is not.
2. Absorption speed: Hydrolysate is absorbed faster due to broken down protein chains.
3. Price: Hydrolysate is usually more expensive due to the more complex manufacturing process.
4. Digestibility: Hydrolysate is suitable for people with more sensitive digestion because it is easier to digest.

Both forms are very good sources of protein, but hydrolysate has the advantage in rapid absorption.

Most popular whey isolates and hydrolysates 

Yamamoto Nutrition Hydro RAZAN OptipepAE 2000 g

"Hydro RAZAN" is created using OptipepAE hydrolyzed whey proteins, so it is not a regular whey isolate. During hydrolysis, proteins are broken down into smaller peptides, so the product is intended for those seeking a more advanced protein formula. The large 2 kg package is suitable for those who exercise regularly and take protein supplements daily.

Master Isolate 100% Isolate 2000 g

"Master Isolate" – 100% whey protein isolate, focused on high protein concentration without additional hydrolysis process. It is a good choice for those looking for a pure isolate with low fat and carbohydrates.

Applied Nutrition ISO XP 1800 g

"ISO XP" is made only from 100% whey protein isolate, so the formula does not use concentrate or other protein sources. The product stands out with its simple composition and large 1.8 kg package, which will appeal to those looking for a quality isolate for long-term use.