PROCESS FOR PURIFYING AROMATIC AMINO ACIDS

摘要

The invention relates to a process for purifying an amino acid from a starting mixture, in which the amino acid comprises an aromatic ring and has an acidity constant Ka, the process comprising: - a first step of bringing the starting mixture into contact with a strong cationic resin, at a pH greater than or equal to pKa; - a second step of eluting with an aqueous solution of eluent having a pH greater than the pH of the first step, making it possible to collect a stream enriched with the amino acid.