essential amino acid

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essential amino acid

Etymology: L, essentia, quality
an organic compound not synthesized in the body that is essential for protein synthesis in adults and optimal growth in infants and children. Adults require isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. Infants need these amino acids plus arginine and histidine. Cysteine and tyrosine are derived from methionine and phenylalanine, respectively, and are considered semiessential. See also amino acid, nonessential amino acid.

essential amino acid

An amino acid that is required for growth and development but that cannot be produced by the body and must be obtained from food. The essential amino acids are histidine, isoleucine, leucine, lysine, methionine, cysteine, phenylalanine, tyrosine, threonine, tryptophan, and valine. Synonym: indispensable amino acid
See also: amino acid

essential amino acid

an AMINO ACID that must be taken in via the diet, as distinct from nonessential amino acids, which can be synthesized by the organism itself, in a process called TRANSAMINATION, using the essential amino acids as a source. In humans there are ten essential amino acids: ARGININE, TRYPTOPHAN, ISOLEUCINE, METHIONINE, THREONINE, LYSINE, LEUCINE, VALINE, HISTIDINE and PHENYLALANINE.
References in periodicals archive ?
Information on the amino acid profiles of the amniotic fluid of late-incubation egg will be relevant in developing a suitable amino acid in ovo supplement with equivalent amino acid profile to that of the amniotic fluid.
Some appreciable improvement in nutrient contents and amino acid profiles of some fibrous farm wastes namely, rice husk, corn cobs and cassava peels subjected to solid state fermentation (SSF) have been reported, which gave increment of about 20% crude protein, 25% metabolizable energy, 30% nitrogen free extract, with about 0.
americanum juveniles (Table 6) show the similarity of the amino acid profile of this species with fish meal II, coinciding with EAA requirements for Litopenaeus schmiti, reported by Alvarez et al.
We conclude that possible areas of clinical application of the current technique include (a) monitoring of disease activity and treatment/dietary compliance in patients; (b) large epidemiological studies investigating amino acid profiles (3); and (c) experimental studies for the identification of new pathways and biomarkers of disease.
Amino acid profile of kutum (Rutilusfrisii), silver carp (Hypophthalmicthys molitrix) and rainbow trout (Oncorhynchus mykiss).
The amino acid profiles of plant-based foods are missing just a couple of the essential amino acids.
Protein, mineral and amino acid profile of sorghum flour as influenced by soy bean protein concentrate supplementation.
87 Table 3: Amino Acid Profile of Irvigna gabonesis (ogbono), and Citrullus colocynthis (melon), Using Amino Acid Analyzer, Technicon TSM-1, (Model: DNA 0209), (Concentration in g/100g protein).
The amino acid profile, mineral content and microstructure of the parties were evaluated.