A magnesium citrate glycinate co-salt has a formula of Mg.sub.2C.sub.8H.sub.9NO.sub.9—XH.sub.2O and a suggested structure of: ##STR00001## The magnesium citrate glycinate co-salt has an apparent density of 1740 kg/m.sup.3 and is compressible in a range of compression pressures from approximately 50 MPa to approximately 150 MPa. The magnesium citrate glycinate co-salt is formed by combining citric acid and glycine in a 1:1 molar ratio to form an aqueous reaction mixture and neutralizing the aqueous reaction mixture with a magnesium source having a magnesium:ligand ratio of 1:1.

The present disclosure relates to metal di-amino acid chelates and metal tri-amino acid chelates.

The invention relates to a method for producing a composition containing at least one metal amino acid compound, in which method —a basic compound of a divalent metal is first reacted together with an alpha amino acid in a molar relationship of one to at least two in water during heating of up to 60° C. to 100° C., —a reaction equilibrium is awaited, —the reaction solution is then mixed with a water-soluble salt of the same divalent metal at a quantity such that the molar total quantity of the divalent metal from the basic compound of the metal and the metal salt does not exceed the molar quantity of the alpha amino acid, —the metal salt is allowed to completely dissolve, —the reaction solution is then dried thereby obtaining a solid composition.

The invention relates to a method for producing a composition containing at least one metal amino acid compound, in which method —a basic compound of a divalent metal is first reacted together with an alpha amino acid in a molar relationship of one to at least two in water during heating of up to 60° C. to 100° C., —a reaction equilibrium is awaited, —the reaction solution is then mixed with a water-soluble salt of the same divalent metal at a quantity such that the molar total quantity of the divalent metal from the basic compound of the metal and the metal salt does not exceed the molar quantity of the alpha amino acid, —the metal salt is allowed to completely dissolve, —the reaction solution is then dried thereby obtaining a solid composition.

Disclosed herein are improved methods for the synthesis of zinc-amino acid-halide complexes via reaction of zinc halide and amino acid free base in a solvent comprising a polyol, as well as oral care compositions comprising said complexes made according to said method.

Disclosed herein are improved methods for the synthesis of zinc-amino acid-halide complexes via reaction of zinc halide and amino acid free base in a solvent comprising a polyol, as well as oral care compositions comprising said complexes made according to said method.

The invention relates to an organometallic complex of the amino acid/metal type. The complex is a crystalline pluri-metal complex that can be obtained in the form of a homogeneous powder that can be used to optimise animal feed. More specifically, the invention relates to an organometallic complex that is characterised in that it is formed by at least one amino acid or amino acid derivative with at least two different metals. The invention also relates to a powder comprising the organometallic complex of the invention, as well as to methods for preparing such a powder.

The invention relates to an organometallic complex of the amino acid/metal type. The complex is a crystalline pluri-metal complex that can be obtained in the form of a homogeneous powder that can be used to optimise animal feed. More specifically, the invention relates to an organometallic complex that is characterised in that it is formed by at least one amino acid or amino acid derivative with at least two different metals. The invention also relates to a powder comprising the organometallic complex of the invention, as well as to methods for preparing such a powder.

Disclosed herein are improved methods for the synthesis of zinc-amino acid-halide complexes via reaction of zinc oxide and amino acid hydrochloride in a solvent comprising a polyol, as well as oral care compositions comprising said complexes made according to said method.

Disclosed herein are improved methods for the synthesis of zinc-amino acid-halide complexes via reaction of zinc oxide and amino acid hydrochloride in a solvent comprising a polyol, as well as oral care compositions comprising said complexes made according to said method.