Noun
an amino acid that occurs in proteins; is essential for growth and normal metabolism; a precursor of niacin
Source: WordNetAlthough cooking lowers concentrations of amino acids such as tryptophan, lysine, total aromatic, and sulphur-containing amino acids, their contents are still higher than proposed by the FAO/WHO reference. Source: Internet
An alternative explanation for the 1989 EMS outbreak is that large doses of tryptophan produce metabolites which inhibit the normal degradation of histamine and excess histamine in turn has been proposed to cause EMS. Source: Internet
Germination decreases lysine, tryptophan, sulphur and total aromatic amino acids, but most contents are still higher than proposed by the FAO/WHO reference pattern. Source: Internet
However, no solid data have ever linked modest dietary changes in tryptophan to changes in sleep. Source: Internet
In 2001 a Cochrane Review of the effect of 5-HTP and tryptophan on depression was published. Source: Internet
In animals including humans, serotonin is synthesized from the amino acid L - tryptophan by a short metabolic pathway consisting of two enzymes : tryptophan hydroxylase (TPH) and aromatic amino acid decarboxylase (DDC). Source: Internet