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Applied and Environmental Microbiology, May 2009, p. 2977-2981, Vol. 75, No. 9
0099-2240/09/$08.00+0     doi:10.1128/AEM.01707-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.

Quantitative Approach to Determining the Contribution of Viable-but-Nonculturable Subpopulations to Malolactic Fermentation Processes{triangledown}

Covadonga Quirós, Mónica Herrero, Luis A. García, and Mario Díaz*

Department of Chemical Engineering and Environmental Technology, University of Oviedo, Oviedo, Asturias, Spain

Received 24 July 2008/ Accepted 24 February 2009

Different sizes of viable-but-nonculturable cell subpopulations of a lactic acid bacterium strain were induced by adding increasing amounts of SO2. The experimental data obtained here were fitted to a segregated kinetic model developed previously. This procedure allowed us to determine in quantitative terms the contribution of this physiological state to malolactic fermentation.

* Corresponding author. Mailing address: Department of Chemical Engineering and Environmental Technology, Faculty of Chemistry, University of Oviedo, C/ Julián Clavería s/n., 33071 Oviedo, Asturias, Spain. Phone: 34 985 103439. Fax: 34 985 103434. E-mail: mariodiaz{at}uniovi.es

{triangledown} Published ahead of print on 6 March 2009.

Applied and Environmental Microbiology, May 2009, p. 2977-2981, Vol. 75, No. 9
0099-2240/09/$08.00+0     doi:10.1128/AEM.01707-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.





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