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Updated: May 18, 2026

Saccharomyces cerevisiae Exponential Growth Kinetics in Batch Culture to Analyze Respiratory and Fermentative Metabolism
Published on: September 30, 2018
Gas bubble formation in the cytoplasm of a fermenting yeast
Chantel W Swart1, Khumisho Dithebe, Carolina H Pohl
1Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, Bloemfontein, South Africa.
Abstract:
Current paradigms assume that gas bubbles cannot be formed within yeasts although these workhorses of the baking and brewing industries vigorously produce and release CO(2) gas. We show that yeasts produce gas bubbles that fill a significant part of the cell. The missing link between intracellular CO(2) production by glycolysis and eventual CO(2) release from cells has therefore been resolved. Yeasts may serve as model to study CO(2) behavior under pressurized conditions that may impact on fermentation biotechnology.
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