Metabolism of Lactic Acid Bacteria

5 Effect of the metabolism of lactic acid bacteria on wine composition and 

Metabolism represents the biochemical reactions of degradation and synthesis carried out by the bacteria cell during multiplication. Catabolic reactions provide energy, transforming substrates from the enviromnent or reserve substances of the cell anabolic reactions guarantee cellular synthesis from environmental substrates and intermediary catabolism products. 

Lactic acid bacteria are chemotrophic they find the energy required for their entire metabolism from the oxidation of chemical compounds. The oxidation of substrates represents the loss of electrons that must be accepted by another molecule, which is reduced. Most oxidations, simultaneously liberate 

Thus the biological oxidation of a substrate is always coupled with the reduction of another molecule. In the following oxidation-reduction reaction the oxidized substance is noted as DH2 and the final electron and proton acceptor as A  

Handbook of Enology Vobunel The Microbiology of Wine and Vinifications 2nd Edition P. Rib reau-Gayon, D. Dubourdieu, B. Don he and A Lonvaud 2006 John Wiley Sons. Ltd ISBN 0-470-01034-7 

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Effect of Oxygen on Metabolism of Lactic Acid Bacteria... 

Davis, C.R., Wibowo, D.J., Lee, T.H. Eleet, G.H. (1986). Growth and metabolism of lactic acid bacteria during and after malolactic fermentation of wines at different pH. Appl. Environ. Microbiol, 51, 539-545. 

Ganzle, M.G., Vermeulen, N., and Vogel, R.F. 2007. Carbohydrate, peptide and lipid metabolism of lactic acid bacteria in sourdough. Food Microbiology 24 128-138. 

Figure 2.3 Metabolism of lactic acid bacteria (Reddy et al., 2008). Published with permission from Elsevier.

EFFECT OF THE METABOLISM OF LACTIC ACID BACTERIA ON WINE COMPOSITION AND QUALITY... 

Mayo, B., Aleksandrzak-Piekarczyk, T., Fernandez, M., et al. (2010) Updates in the metabolism of lactic acid bacteria. In Biotechnology of Lactic Acid Bacteria ((eds) Mozzi, F., Raya, R.R., Vignolo, G.M.) pp. 3-33. Wiley-Blackwell. Available at http //dx.doi.org/10.1002/9780813820866.chl [accessed 25 March 2010]. 

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