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research-article

Activation of the potassium uptake system during fermentation in Saccharomyces cerevisiae.

Departamento de Microbiología, Escuela-Técnica Superior de Ingenieros Agrónomos, Córdoba, Spain.

ABSTRACT

Fermentable sugars activated the K+ uptake system, increasing the Vmaxs of Rb+, Na+, and Li+ influxes, but sugars did not affect the effluxes of these cations. This activation seems to be a direct effect of fermentation and not the consequence of the H+ pump ATPase activation or internal pH decrease produced by fermentation.

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