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Possible Occurrence of a Crabtree Effect in the Production of Lactic and Butyric Acids by a Floc-Forming Bacterial Consortium

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Bibliographic Details
Title: Possible Occurrence of a Crabtree Effect in the Production of Lactic and Butyric Acids by a Floc-Forming Bacterial Consortium
Authors: Thierie, Jacques, Penninckx, Michel
Source: Current Microbiology. 48:224-229
Publisher Information: Springer Science and Business Media LLC, 2004.
Publication Year: 2004
Subject Terms: 0301 basic medicine, Lactic Acid -- metabolism, Lactobacillus -- growth & development -- metabolism, Enterobacter, Enterobacter -- growth & development -- metabolism, Models, Biological, Industrial Microbiology, 03 medical and health sciences, Bioreactors, Oxygen Consumption, Models, Escherichia coli, Industrial Microbiology -- methods, Proteus vulgaris, Clostridium -- growth & development -- metabolism, Pseudomonas aeruginosa -- growth & development -- metabolism, Biomass, Lactic Acid, Ecosystem, Clostridium, 0303 health sciences, Butyric Acid -- metabolism, Escherichia coli -- growth & development -- metabolism, Bacteria, Proteus vulgaris -- growth & development -- metabolism, Flocculation, Sciences bio-médicales et agricoles, Glucose -- metabolism, Biological, Lactobacillus, Glucose, Fermentation, Pseudomonas aeruginosa, Butyric Acid, Bacteria -- growth & development -- metabolism
Description: Lactic and butyric acid production by bacterial flocs in a continuous culture obeyed different physiological constraints. The butyric acid rate of production was constant and independent of the growth rate [0.012 +/- 0.001 gBUT/(L.h)], whereas lactic fermentation occurred only beyond a critical growth rate (0.25 +/- 0.05 h(-1)) and was apparently associated with an abrupt drop in biomass. Principles of modeling used to describe a Crabtree effect in Saccharomyces cerevisiae were found to apply to lactic acid production by flocs. A rank of "physiological unit" (or "metabolic unit") can be attributed to the bacterial floc. From a practical point of view, the production of fermentation products by stable flocs, naturally resistant to contamination, opens the possibility of industrial production by continuous cultivation by using flocs-forming consortia.
Document Type: Article
File Description: No full-text files
ISSN: 1432-0991
0343-8651
DOI: 10.1007/s00284-003-4169-3
Access URL: https://pubmed.ncbi.nlm.nih.gov/15057470
https://difusion.ulb.ac.be/vufind/Record/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/99161/Details
https://www.ncbi.nlm.nih.gov/pubmed/15057470
https://link.springer.com/article/10.1007/s00284-003-4169-3
https://core.ac.uk/display/8900912
Rights: Springer TDM
Accession Number: edsair.doi.dedup.....6014c3e01cef61b0c7b939e82c7efbda
Database: OpenAIRE
Description
Abstract:Lactic and butyric acid production by bacterial flocs in a continuous culture obeyed different physiological constraints. The butyric acid rate of production was constant and independent of the growth rate [0.012 +/- 0.001 gBUT/(L.h)], whereas lactic fermentation occurred only beyond a critical growth rate (0.25 +/- 0.05 h(-1)) and was apparently associated with an abrupt drop in biomass. Principles of modeling used to describe a Crabtree effect in Saccharomyces cerevisiae were found to apply to lactic acid production by flocs. A rank of "physiological unit" (or "metabolic unit") can be attributed to the bacterial floc. From a practical point of view, the production of fermentation products by stable flocs, naturally resistant to contamination, opens the possibility of industrial production by continuous cultivation by using flocs-forming consortia.
ISSN:14320991
03438651
DOI:10.1007/s00284-003-4169-3