Invention Grant
- Patent Title: Dicarboxylic acid production by fermentation at low pH
- Patent Title (中): 在低pH下通过发酵生成二羧酸
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Application No.: US13003217Application Date: 2009-05-20
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Publication No.: US09012187B2Publication Date: 2015-04-21
- Inventor: Mickel Leonardus August Jansen , René Verwaal
- Applicant: Mickel Leonardus August Jansen , René Verwaal
- Applicant Address: NL Heerlen
- Assignee: DSM IP Assets B.V.
- Current Assignee: DSM IP Assets B.V.
- Current Assignee Address: NL Heerlen
- Agency: Miles & Stockbridge PC
- Priority: EP08159891 20080708
- International Application: PCT/EP2009/056181 WO 20090520
- International Announcement: WO2010/003728 WO 20100114
- Main IPC: C12P1/00
- IPC: C12P1/00 ; C12P7/46
Abstract:
The present invention relates to a process for the production of a dicarboxylic acid. The process comprises fermenting a yeast in the presence of a carbohydrate-containing substrate and low amounts of oxygen at a pH value at which at least 50% of the dicarboxylic acid is in the acid form. The process of the present invention allows for high yields of the dicarboxylic acid product and is more cost-effective than existing processes in which the salt is produced which during recovery has to be converted to the acid. It also leads to a simpler and more convenient downstream processing.
Public/Granted literature
- US20110229945A1 DICARBOXYLIC ACID PRODUCTION BY FERMENTATION AT LOW PH Public/Granted day:2011-09-22
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