Question

reference protein is?

Answer 1

Protein, reference A theoretical concept of the perfect protein which is used with 100% efficiency at whatever level it is fed in the diet. Used as a means of expressing recommended intakes. The nearest approach to this theoretical protein are egg and human milk proteins, which are used with 90–100% efficiency when fed at low levels in the diet (4%), but not when fed at high levels (10–15%).

Answer 2

Egg protein is best among food proteins because of their high biological value and digestibility coefficient. They are used in nutrition studies as a 'reference protein'. It contains all essential amino acids and its NPU is highest.