Cargill Inc.

Brenda F Stewart

Jeffrey John Kolstad

Aharon Eyal

Betty Hazan

Rod R Fisher

Joseph Mizrahi

Avraham M Baniel

Avraham Baniel

Abraham M Baniel

A process for the production and isolation of lactic acid is provided. A lactate feed solution, preferably obtained from a fermentation broth is combined with and extracted by a water-immiscible base in the presence of an acidifying agent. Lactic acid is recovered from the resulting organic phase. Recovered carbonate or bicarbonate from the aqueous phase can be recycled to the fermentor and regenerated extractant can be recycled for use in the extraction.

Lactic acid production, separation and/or recovery process

A process for the production of lactic acid and for the separation and/or recovery of lactic acid from a lactate feed solution. A lactate feed solution preferably obtained from a fermentation broth is combined with and extracted by a water immiscible trialkyl amine in the presence of carbon dioxide. Lactic acid is recovered from the resulting organic phase. Recovered carbonate or bicarbonate from the aqueous phase is preferably recycled to the fermentor and regenerated extractant is preferably recycled for use in the extraction.

Process for isolating lactic acid

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White Bear Lake, MN, United States of America

Brenda F Stewart