The invention relates to a method for producing a composition containing at least one metal amino acid compound, in which methoda 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 present disclosure relates to methods for separating at least one amine chosen from diamines and omega-aminoacids from a feed mixture using a simulated moving bed (SMB) adsorptive technology.

The present disclosure relates to methods for separating at least one amine chosen from diamines and omega-aminoacids from a feed mixture using a simulated moving bed (SMB) adsorptive technology.