Continuous cultivation of the yeastSaccharomyces cerevisiae at different dilution rates and glucose concentrations in nutrient media |
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Authors: | D Pejin R Razmovski |
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Institution: | (1) Faculty of Technology, Novi Sad, Yugoslavia |
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Abstract: | The influence of glucose concentration in nutrient media on the specific growth rate and biomass yield in the course of continuous
fermentation ofSaccharomyces cerevisiae was investigated. An increase of glucose content in media decreased the specific growth rate and the biomass yield. Glucose
concentration had significant effects on protein and phosphate contents of cells. However, an increased glucose concentration
increased the fermentative power ofS. cerevisiae (SJA-method). An increase of the dilution rate decreased the cell concentration in the fermentor. Specific growth rate approached
the values of the dilution rate. The best agreement has been obtained at a dilution rate of 0.20/h. This dilution rate proved
to be most convenient for the investigated microorganism and cultivation conditions (media composition, pH, aeration intensity
and temperature). Biomass yield proved to be decreased by an increase of the dilution rate. |
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