Define Protein Concentrates, Isolates and Hydrolysates?

The first question that may come to your mind is why do we need to concentrate or isolate a protein from a product? The major purpose of the preparation of concentrates and isolates from a protein source is to increase the concentration of proteins by the removal of non protein ingredients form the source, so that the smaller amounts can be used in the formulation to impart nutritional as well as functional properties. The methods utilized for the removal of non-protein ingredients should be such that it should not affect the nutritional and functional properties of the protein to a great extent. Most of the work has been done on the preparation of soy protein isolates and concentrates and whey protein concentrates.