LACTIC ACID EXTRACTION AND PURIFICATION PROCESS

摘要

A process is disclosed for extracting pure lactic acid from fermentation broths by ion exchange chromatography on a strongly acid cation exchanger, preferably in the H<+> form. In a first step, the NH4-lactate coming from the fermentation is converted by authentic ion exchange into the free acid. Preferably said conversion is carried out on a weakly acid cation exchanger in the H<+> form.