Process for producing itaconic acid

Itaconic acid fermentation broth prepared in routine manner is subjected to pre-treatment to remove high molecular impurities, which have a property to prevent electrodialysis, and after treating with cation-exchange resin and further neutralizing, the above filtrate of the fermented broth is electr...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAMURA, ISEI, KOBAYASHI, TATSUYOSHI, NAKAGAWA, MITSUTOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS BEER BIOCHEMISTRY CHEMISTRY ENZYMOLOGY FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY MICROBIOLOGY MUTATION OR GENETIC ENGINEERING ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION SPIRITS TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS TRANSPORTING VINEGAR WINE
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Beschreibung
Zusammenfassung:	Itaconic acid fermentation broth prepared in routine manner is subjected to pre-treatment to remove high molecular impurities, which have a property to prevent electrodialysis, and after treating with cation-exchange resin and further neutralizing, the above filtrate of the fermented broth is electrodialyzed through ion-exchange membranes, so as to obtain refined solution of itaconate, and the dialyzate recovered in the electrodialysis is effectively recycled to form the raw material of the next fresh fermentation medium, whereby an almost closed process system for production of itaconic acid may be attained. The objects and advantages of the present process reside in, that yield of itaconic acid is higher in the sum total; that fermentation period in batchwise fermentation is reduced; and that the quantities of waste liquor discharged therefrom are effectively decreased (this point is very important from viewpoint of prevention of public hazards).