Methods for producing pure amino acid chelate complexes, and uses thereof
US7341708B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Dec 20, 2006 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Dec 20, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/315
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A two-stage method of preparing essentially pure amino acid chelates, wherein the first stage comprises contacting a metal ion from a metal oxide or hydroxide with an amino acid thereby producing a metal hydroxyl amino acetate. The second stage comprises contacting the metal hydroxyl amino acetate from the first stage, with at least one amino-containing compound provided in excess thereby producing a reaction solution containing an amino acid chelate reaction product comprising a metal ion bound to a plurality of amino acid ligands wherein the plurality of amino acid ligands is equal to the coordination number of the metal ion, and then separating the amino acid chelate from the reaction solution. The second stage may include a plurality of steps for sequentially reacting the reaction product with a plurality of amino-containing compounds. The amino acid chelates thus produced can be incorporated into compositions comprising beverages, foodstuffs, nutraceuticals and pharmaceutical adjuvants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.