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Featured Amino Acids

Fukagawa NK
Department of Medicine, University of Vermont, Colchester Research Facility, 208 South Park Dr. Room 173, Colchester, VT, 05446, USA

The aging process is a...

Amino acids are relatively simple molecules containing both amino (NH2) group and carboxyl (COOH) functional groups. They are ancient, from an evolutionarily viewpoint, and, alongside carbohydrates and fatty acids, basic nutrients. Twenty amino acids provide minimal requirements for growth, nitrogen equilibrium, maintenance of host defenses, neural (Fernstrom, 2000; Young et al., 1994) and muscular functions, as well as gene expression regulation (Fafournoux et al., 2000). The catabolism of amino acids contributes an energy source...

Arginine is one of most important amino acid present in the human body. Arginine is one of the twenty amino acids that make up the protein in the human body.

Industrially arginine is produced by fermentation from carbohydrate sources...

 Glutamine is one of most important amino acid present in the human body.

Glutamine is a substance that exists abundantly in the body and one of the twenty amino acids that make up the protein in the human body.
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 BCAA are a group of three ketogenic essential amino acids (leucine, valine and isoleucine). They are called branched-chain because their structure has a “branch” off the main body of the molecule. The combination of these three essential amino acids makes up approximately one-third of skeletal muscle in the human body in form of protein, even though BCAA are present in the skeletal muscle in free (non-protein) form only in marginal amounts. Commercial form of BCAA is a white crystal or crystalline powder, odorless...

 Lysine is an essential amino acid because the human body cannot synthesize it in the body and therefore its breakdown is irreversible. Lysine is produced by fermentation from carbohydrate sources as a white crystalline powder, odorless but with a slight bitter taste. Lysine is readily soluble in water and practically insoluble in alcohol.

In the...

 Tryptophan (Trp) is one of the nine essential amino acids that need to be ingested daily in the diet. The adult male requirement for Trp in diet is 4.0 mg per kg body weight. The idea of using Trp to reduce mental stress and improve sleeping has been implemented since 1970s, since the time medical scientists discovered that Trp influenced the rate at which neuronal endings formed the neurotransmitter serotonin and that Trp was a precursor of melatonin. The brain Trp co-depends on the plasma supply of Trp and carbohydrates (...