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| - A New Tool for the Quantification of Microorganism InteractionDynamics
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| - A two-reservoir, membrane bioreactor for carrying out studies of mixed population dynamics inbatch fermentation is presented. Mixing requirements and design aspects for the validity of theapproach are presented and discussed. Equations describing mixing times between the reservoirsare given and compared to the experimental results. The validity of the approach is demonstratedby the study of several types of situations in the bioreactor. The main validation consists of thecomparison between the results obtained in an actual mixed culture and the results obtainedby keeping the strains separated. Finally, this new tool is used to study the interaction kineticsbetween two oenological bacteria. These experiments in liquid media help to determine theseeding conditions for a chosen strain to overgrow another strain through a quantification ofthe interaction dynamics.
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