Brevet : EP0935668 - PROCEDE DE PRODUCTION D'UN POLYCONDENSAT D'ACIDE ASPARTIQUE

Titre

PROCEDE DE PRODUCTION D'UN POLYCONDENSAT D'ACIDE ASPARTIQUE

N° et date de publication de la demande

EP0935668 - 18/08/1999

Type de la demande

A1

N° et date de dépôt

EP97944993.1 - 10/10/1997

N° et date de priorité

IL11941496 - 13/10/1996

Famille de brevets

WO9816652A1 ; DE69714064T2 ; EP0935668A1 ; ES2180066T3 ; ATE220723T1 ; US6344348B1 ; IL119414A ; JP2001502175A ; AU4631797A

Abrégé

The invention provides a process for the production of aspartic acid poly-condensate from a carbohydrate comprising the steps of: fermenting a carbohydrate-containing medium by means of a fumaric acid-producing microorganism, whereby a fumarate-containing fermentation liquor is formed; forming a purified ammonium fumarate solution from the fumarate-containing fermentation liquor; enzymatically converting the purified ammonium fumarate into purified ammonium aspartate; heating an aqueous solution of an aspartate salt derived from the purified ammonium aspartate whereby water is removed, an aspartic acid condensate is formed and a second product is formed, which second product is basic and contains the cation of the aspartate salt; and removing and using the basic second product as a reagent in another step of the process.