Cereals and legumes contain some, but not all, of the essential amino acids and are not considered to be incomplete proteins . Cereals and legumes are more valuable if combined with even a small amount of complete protein. Also, cereals and legumes complement each other and together form complete proteins. As this process continues, the final stage is coagulation. In coagulation, the protein forms a solid mass as the denatured molecules bind together.
Enzymes are proteins with a special function.
They act as catalysts to change the rate of a chemical reaction without being use up in the reaction itself. More about them later.