Method for purifying GMP from a lactic raw material

摘要

Process for the ion-exchange treatment of a liquid lactic raw material containing GMP with the purpose of recovering a product that can be used as a protein source and providing GMP in a purified form. The process involves decationisation of the liquid raw material such that the pH has a value of 1 to 4.5, bringing the liquid into contact with a weak anionic resin of hydrophobic matrix, predominantly in alkaline form up to the stabilized pH, separation of the resin and the liquid product which is recovered, and desorption of GMP from the resin.