Whey Protein

Whey Protein

What is Whey Protein ?

Whey is a natural dairy protein derived from milk. Milk contains 2 primary proteins: casein and whey. When cheese is produced the liquid whey separates from the curd or casein. The whey is then separated from the liquid whey to remove lactose, fat, water and some milk salts. It is purified to various concentrations of whey protein.

Is milk same as whey protein ?

No, while both are natural dairy products. Milk contains ~6.25% protein that is comprised of 80% casein protein and 20% whey protein. Milk contains lactose and fat. Whey protein is derived from milk, eliminating most of the lactose and milk fat.

What are the methods used to produce whey protein?

There are several industrial methods used to produce whey protein fit for human consumption. These methods include:

  • Micro-filtration: where the proteins are physically separated by a microscopic filter.
  • Reverse osmosis: where the proteins are physically separated by a high pressure filter.
  • Ion-exchange: where the proteins are extracted by taking advantage of their specific electronic charge.

Are all whey proteins the same?

The composition of whey protein products will vary based upon several factors including:

  • Source of the milk
  • Method of production
  • Type of cheese being produced
  • Individual manufacturer's specifications.

What are the special feature of whey protein ?

  • High biological value (a rating to indicate how well the protein is absorbed and utilized by the body)
  • Rich in branded chain amino acids (BCAAs) and essential amino acids
  • Immune enhancing properties
  • Increase glutathione (an antioxidant enzyme) levels in the body

What is the individual protein fractions found in whey protein?

Whey protein is not a single protein but compose of four main protein fractions (comprise up to 80% of total protein in whey) and six minor protein fractions with different molecular weights. These protein fractions occur naturally in milk.

The four main protein fractions are:

  • Alpha-Lactalbumin
  • Beta-Lactoglobulin
  • Bovine Serum Albumin
  • Immunoglobulins

Learn the different types of whey protein available in the market ...

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