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US 5,393,915 AGranted
Method of preparing .alpha.-L-aspartyl-L-phenylalanine methyl ester or its hydrochloride salt
AssigneeAjinomoto Co., Inc.
InventorsTakehiko Kataoka, Akihiko Yasaki, Shinichi Kishimoto, Toshihisa Kato
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Abstract
A method for the solid-liquid separation of a suspension of .alpha.-L-aspartyl-L-phenylalanine methyl ester (.alpha.-APM) or its hydrochloride salt (.alpha.-APM.HCl), wherein an aqueous suspension of .alpha.-L-aspartyl-L-phenylalanine methyl ester or its hydrochloride salt is subjected to continuous separation by vacuum filtration.
Claims15
A method for isolating .alpha.-L-aspartyl-L-phenylalanine methyl ester or its hydrochloride salt from an industrial-scale aqueous suspension of the same, comprising subjecting said aqueous suspension to continuous separation by vacuum filtration.
Dependencies are inferred from the claim text.