why are complementary proteins important
Complementary Proteins. Complementary Proteins. Proteins are compounds made up of building blocks called âamino acids.â There are about 20 common amino acids.Nine of them are called âessentialâ because the body is unable make them, and so they must be supplied by the food you eat.lant foods do not, as a rule, have complete proteins, but by eating combinations of plant foods, called âcomplementary proteins,â you can obtain a complete protein. For example, when you eat refried beans with rice, such as is often found in Mexican cuisine, you are obtaining a complete protein.