Process for recovering L-phenylalanine

摘要

Addition of a reaction mixture obtained by the mineral acid hydrolysis of at least one side flow generated from the production of alpha -L-aspartyl-L-phenylalanine methyl ester to a crystallization slurry containing L-phenylalanine while maintaining the pH of the slurry at 3-8 by adding aqueous alkali affords crystallized L-phenylalanine having a low water content in a high yield.