Amino acids play a central role as building blocks of proteins and as intermediates in metabolism. Twenty amino acids, which are located within the protein lead to a vast array of chemical versatility.

Our body can produce 10 from 20 amino acids. The rest should be taken in the diet. If our body can not produce enough even one essential amino acid, The result is degradation of substances, prove the amino poluchi, not reached. Unlike fat and starch, excess amino acids are not stored for later use in the human body. They should be in food every day.

Ten amino acids, that we can produce are alanine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine and tyrosine. Tyrosine is produced from Phenylalanine, so if the diet is poor in phenylalanine, tyrosine will be required, as a substitute. Essential amino acids are arginine (mandatory for young, but not for adults), histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. These amino acids must be present in our diet. Plants should be able to supply us all the amino acids. People, on the other hand, not have all the enzymes, necessary for the biosynthesis of amino acids.