Noun
an essential amino acid found in proteins and needed for growth of children and for protein metabolism in children and adults; abundant in milk and eggs; it is normally converted to tyrosine in the human body
Source: WordNetAccordingly, all products in Australia, the U.S. and Canada that contain aspartame must be labeled: "Phenylketonurics: Contains phenylalanine." Source: Internet
As with methanol and phenylalanine, intake of aspartic acid from aspartame is less than would be expected from other dietary sources. Source: Internet
A small amount of D -phenylalanine appears to be converted to L -phenylalanine. Source: Internet
Biosynthesis As an essential amino acid, phenylalanine is not synthesized de novo in humans and other animals, who must ingest phenylalanine or phenylalanine-containing proteins. Source: Internet
Both PKU and most non-PKU hyperphenylalaninemia are the result of phenylalanine hydroxylase deficiency (PAHD). Source: Internet
Concerns about the safety of phenylalanine from aspartame center largely on hypothetical changes in neurotransmitter levels as well as ratios of neurotransmitters to each other in the blood and brain that could lead to neurological symptoms. Source: Internet