Document Detail


Kinetic study on succinic acid and acetic acid formation during continuous cultures of Anaerobiospirillum succiniciproducens grown on glycerol.
MedLine Citation:
PMID:  19644709     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Succinic acid-producing Anaerobiospirillum succiniciproducens was anaerobically grown in a glycerol-fed continuous bioreactor in order to investigate the physiological responses of the cell to different pH values (5.9, 6.2, or 6.5) and various dilution rates, D. In these experiments, A. succiniciproducens showed a pH-dependent glycerol consumption behavior. When pH was maintained at 5.9 or 6.5, glycerol started to accumulate even at a very low D of 0.027 h(-1). Succinic acid yield was not significantly affected by the pH of the culture or the Ds. However, more acetic acid formation was observed when the growth rate of A. succiniciproducens was fast on glycerol at pH 6.2 (at D > or = 0.15 h(-1)). The highest obtainable succinic acid/acetic acid ratio was 40:1, which was 10 times higher than that obtained by batch cultures grown on glucose. The maximum obtainable productivity of succinic acid was 2.1 g L(-1) h(-1)), which was 14 times higher than that obtained by batch culture.
Authors:
Pyung Cheon Lee; Sang Yup Lee; Ho Nam Chang
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-07-31
Journal Detail:
Title:  Bioprocess and biosystems engineering     Volume:  33     ISSN:  1615-7605     ISO Abbreviation:  Bioprocess Biosyst Eng     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-04-12     Completed Date:  2010-07-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101088505     Medline TA:  Bioprocess Biosyst Eng     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  465-71     Citation Subset:  IM    
Affiliation:
Department of Molecular Science and Technology, Ajou University, Woncheon-dong, Yeongtong-gu, Suwon, South Korea. pclee@ajou.ac.kr
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MeSH Terms
Descriptor/Qualifier:
Acetic Acid / metabolism*
Anaerobiosis
Anaerobiospirillum / growth & development,  metabolism*
Bioengineering
Bioreactors / microbiology
Fermentation
Glycerol / metabolism
Hydrogen-Ion Concentration
Industrial Microbiology
Kinetics
Succinic Acid / metabolism*
Chemical
Reg. No./Substance:
110-15-6/Succinic Acid; 56-81-5/Glycerol; 64-19-7/Acetic Acid

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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