Patent ID: 7341708
Filing Date: 2008-03-11
Classification: A23L,A61K

Abstract:
1. A method of preparing pure amino acid chelates, said method consisting of: a first stage wherein a metal ion selected from the group comprising metal oxides and metal hydroxides, is contacted with an amino acid in a solvent thereby producing a solution comprising a metal hydroxyl amino acetate product; a second stage wherein said solution comprising said metal hydroxyl amino acetate product is contacted with at least one amino-containing compound selected from the group consisting of amino acids, dipeptides, tripeptides and polypeptides, said amino acids selected from the group consisting of alanine, arginine, asparagine, aspartic acid, creatine, cysteine, cystine, glutamic acid, glutamine, glycine, histidine, isoleucine, leucine, lysine, methionine, omithine, phenylalanine, proline, serine, threonine, tryptophane, tyrosine, valine, selenocysteine and pyrrolysine, said amino-containing compound provided in excess thereby producing a reaction solution containing therein a reaction product comprising a metal ion bound to a plurality of amino acid ligands, said plurality of amino acid ligands equal to the coordination number of the metal ion; and separating said reaction product from said reaction solution and drying said separated reaction product.