What is the primary protein found in cow's milk?

The primary protein found in cow's milk is casein. Casein is the dominant protein in milk, comprising about 80% of the total protein content in cow's milk. It exists in micelle structures, which help in the absorption of calcium and other minerals, making it a significant source of nutritional value. Casein plays an essential role in the formation of cheese and provides a slow, steady release of amino acids when digested, making it particularly valuable for muscle recovery and growth.

Whey, while also a protein found in milk, constitutes a smaller proportion (about 20%) and is often separated during the cheese-making process. Gluten is associated with wheat and does not appear in milk. Albumin is a type of protein found in many fluids, including blood serum, but is not the primary protein in cow's milk. Thus, understanding the unique properties and predominant nature of casein in milk helps clarify its essential role in nutrition and food science.