Amino Acids Working Group Meeting Book (July 3, 2018)

Non-Essential

Essential (Regulated)

Alanine Arginine

Histidine Isoleucine

Asparagine Aspartic acid

Leucine

Lysine

Cysteine

Methionine Phenylalanine

Glutamic acid

Glutamine

Threonine Tryptophan

Glycine Proline Serine Tyrosine

Valine

Taurine*

General Analytical Need • Require the ability to determine both free and total (post-hydrolysis) proteinogenic D -amino acids, as well as taurine (free) in infant formulas and other nutritional products. – It is not necessary to differentiate Asn/Asp and Gln/Glu as part of total amino acids (post-hydrolysis). – Asn and Gln should be part of a free amino acid determination. – Taurine, which is not a protein component, may be captured by more than one method.