Reference: Pommier S, et al. (2005) Modelling the growth dynamics of interacting mixed cultures: a case of amensalism. Int J Food Microbiol 100(1-3):131-9

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Abstract


In this work, a specific membrane bioreactor was used to perform co-cultures of two Saccharomyces cerevisiae yeast strains: a killer strain and a sensitive strain. Biomass could be segregated into four groups: viable killer yeasts, dead killer yeasts, viable sensitive yeasts and dead sensitive yeasts. An existing mathematical model describing the population dynamics in the mixed killer/sensitive cultures was confronted with the new experimental data. As it gave poor accuracy, some improvements were proposed and tested. In particular, a lag phase before the beginning of the lethal interaction between the two strains was introduced, in correspondence to the experimental observations.

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Journal Article
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Pommier S, Strehaiano P, Délia ML
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