Not all of it, milk contains sugars, proteins and fats.
All natural milk contains proteins.
Milk
Milk proteins are Whey and Casein.
Proteins from milk are precipitated.
proteins
Whey proteins are the milk proteins that are obtained by acidifying skim milk to pH 4.7 and removing the precipitated casein. Whey proteins are present for about 20% of total milk protein content.
i think the solid waste which remains after the sieving of milk
animal proteins are called first class proteins.
milk proteins are used as ingredients in a wide range of food products both for their nutritional value and for their functionality.
When protein are hydrolyzed, milk's proteins like casein are broken down into amino acids. The allergenic reaction of the milk's proteins are changed due to this.
Milk curdles when heated because the proteins in the milk, specifically casein, denature and coagulate in response to the heat. This causes the proteins to clump together and separate from the liquid, resulting in curdled milk.
The two types of proteins in milk are ceseins and whey. Caseins are coagulable (meaning that they can be converted to a more solid form), and whey proteins are non-coagulable.