Process for the production of l-malic acid

Details Process for the production of l-malic acid Process for the production of l-malic acid

C - Chemistry, Metallurgy

07

C

260/533.1

C07C 59/245 (2006.01) C12P 7/46 (2006.01)

Patent

CA 1236114

ABSTRACT The reaction mixtures which result from the enzymatic reaction of fumaric acid to produce L-malic acid contain L-malic acid and unreacted, fumaric acid as salts. For the production of pure solutions of L- malic acid, the reaction mixtures are treated with cation exchangers at from 50 to 150°C, and the eluates are filtered after being concentrated to an L-malic acid content of from 30 to 80% by weight. The pure L-malic acid is obtained by evaporating the solutions, optionally after a treatment with active carbon.

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