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Three other amino acids, L-Lysine HCl, L-Threonine, and L-Tryptophan, are produced by the fermentation method. With progress [lawyers in my area](http://git.2weisou.com/byronparris818) biotechnology, the cost of production of each amino acid has been significantly decreased, which has been one of the key components in the enlargement of use of amino acids in animal feed. DL-Methionine is produced by chemical synthesis from uncooked materials corresponding to acrolein, hydrocyanic acid and methyl mercaptan. |