vees lahustuv värvuseta aine, sisaldub kõigis valkudes (eriti piima-, liha- ja kalavalgus), asendamatu aminohape
one of nine essential amino acids in humans required for growth and tissue repair and which is supplied by many foods, especially red meats, fish, and dairy products
This method makes the determination possible of free (synthetic and natural) and total (peptide bound and free) amino acids in feed, using an amino acid analyser. It is applicable to the following amino acids: cyst(e)ine, methionine, lysine, threonine, alanine, arginine, aspartic acid, glutamic acid, glycine, histidine, isoleucine, leucine, phenylalanine, proline, serine, tyrosine and valine.