Process for the production of L-aspartyl-L-phenylalanine methyl ester or L-aspartyl-L-phenylalanine

Claim 1

A process for the production of a sweetening agent, characterised by: contacting in an aqueous medium L-aspartic acid and L-phenylalanine methyl ester with a microorganism or enzyme-containing fraction of said microorganism, said microorganism or fraction containing one or more enzymes capable of forming L-aspartyl-L-phenylalanine methyl ester by the condensation of L-aspartic acid and L-phenylalanine methyl ester; or contacting in an aqueous medium L-aspartic acid and L-phenylalanine with a microorganism or enzyme-containing fraction of said microorganism, said microorganism or fraction containing one or more enzymes capable of forming L-aspartyl-L-phenylalanine by the condensation of L-aspartic acid and L-phenylalanine; said microorganism belonging to a genus selected Arthrobacter, Cellulomonas, Brevibacterium, fromE,Corynebacterium, Candida, Cryptococcus, Escherichia, Flavobacterium, Geotrichum, Micrococcus, Pachysolen, Saccharomyces, Trichosporon, Xanthomonas, Kluyveromyces, and Endomyces.