PROCESS FOR SALTING OUT AND EXTRACTING ORGANIC ACID FROM FERMENTATION BROTH

Title:

PROCESS FOR SALTING OUT AND EXTRACTING ORGANIC ACID FROM FERMENTATION BROTH

Document Type and Number:

WIPO Patent Application WO/2012/051774

Kind Code:

A1

Abstract:

Disclosed is a process for salting out and extracting organic acid from a fermentation broth, which is characterized by adding a dissoluble inorganic or organic salt and an extractant into the organic acid fermentation broth, stirring for mixing homogeneously, and standing at room temperature for phase separation. When the salting-out extraction forms two phases, the upper phase is a solvent phase rich in organic acid, the lower phase is a salt phase rich in other components. If the fermentation broth is not pre-treated, a layer of solid phase rich in bacteria and protein will be formed between the two phases. When three phases are formed, the upper one is a solvent phase, the middle one is a phase rich in organic acid, and the lower one is a salt phase rich in other components. The process has the features of simple process, short separation time, low cost and high recovery yield, therefore, it is a process for separating organic acid with good prospect of industrial application.

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Inventors:

XIU ZHILONG (CN)
SONG ZHIYUAN (CN)
WEI BOCHAO (CN)
SUN YAQIN (CN)

Application Number:

PCT/CN2010/080287

Publication Date:

April 26, 2012

Filing Date:

December 27, 2010

Export Citation:

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Assignee:

UNIV DALIAN TECH (CN)
XIU ZHILONG (CN)
SONG ZHIYUAN (CN)
WEI BOCHAO (CN)
SUN YAQIN (CN)

International Classes:

C07C51/48; C07C51/42; C07C51/50; C07C53/02; C07C53/08; C07C55/10; C07C55/21; C07C59/08

Foreign References:

JP2001011013A	2001-01-16
CN1144794A	1997-03-12
JPH04266845A	1992-09-22
US4705894A	1987-11-10

Attorney, Agent or Firm:

PATENT CENTER OF DUT (CN)
大连理工大学专利中心 (CN)

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