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Article Dans Une Revue International Journal of Food Microbiology Année : 2011

Use of a continuous multistage bioreactor to mimic winemaking fermentation

Tiphaine Clement
Jean-Roch Mouret
Carole Camarasa

Résumé

Continuous fermentation set-ups are of great interest for studying the physiology of microorganisms. In winemaking conditions, yeasts go through a growth phase and a stationary phase during which more than half of the sugar is fermented. A comprehensive study of wine-yeast physiology must therefore include yeasts in a non-growing phase. This condition is impossible to achieve within a chemostat, which led us to design a multi-stage fermentation device. In this study, we evaluated the ability of such a device to reproduce, in a series of steady states, the conditions of batch fermentation. Two-stage and four-stage fermentations were carried out with two different strains of Saccharomyces cerevisiae. The main characteristics of the fermentation process (biomass growth, by-product content of the medium) were compared with those observed in batch mode at the same stage of fermentation, which was defined by glucose uptake. The four-stage configuration showed a better ability to reproduce batch fermentation characteristics than the two-stage set-up. It also allowed to uncouple the variations of environmental parameters and proved to be a promising tool to gain new insights into yeast metabolism during alcoholic fermentation.
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Dates et versions

hal-02645067 , version 1 (29-05-2020)

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Tiphaine Clement, Marc M. Perez, Jean-Roch Mouret, Jean-Marie J.-M. Sablayrolles, Carole Camarasa. Use of a continuous multistage bioreactor to mimic winemaking fermentation. International Journal of Food Microbiology, 2011, 150 (1), pp.42-49. ⟨10.1016/j.ijfoodmicro.2011.07.016⟩. ⟨hal-02645067⟩
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