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Amino Acids
Amino acids are found in all cells and are essential to all metabolic processes in plants and animals. The scientific staff of Eurofins can determine the amino acid content in samples, which provides important nutrition information about the value of protein found in a feed, food or petfood.
Cystine and methionine are determined by oxidizing the protein in a sample with performic acid and digesting it with hydrochloric acid for 24 hours. All other amino acids, except tryptophan, are digested with hydrochloric acid (omitting the oxidation step). Tryptophan requires an alkaline hydrolysis after which the hydrolyzed protein is analyzed by ion exchange chromatography or high performance liquid chromatography (HPLC).
AMINO ACID PROFILES
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| Alanine |
Histidine |
Proline |
| Arginine |
Isoleucine |
Serine |
| Aspartic Acid |
Leucine |
Threonine |
| Cystine |
Lysine |
Tryptophan |
| Glutamic Acid |
Methionine |
Tyrosine |
| Glycine |
Phenylalanine |
Valine |
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Eurofins Scientific offers a variety of amino acid profiles including the analysis of protein-bound amino acids (animal and plant tissue) or unbound (free) amino acids. Additionally, our laboratories can also analyze amino acid concentrates.
OTHER INDIVIDUAL AMINO ACID ANALYSES:
Hydroxyproline
Lysine Available
Lysine Unavailable
Monosodium Glutamate (MSG) (calculated from glutamic acid)
Taurine in Cat Blood
Taurine
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