FIG. 2.
Effect of specific growth rate on the fermentative capacity of S. cerevisiae DS28911, expressed as millimoles of ethanol produced per gram of dry yeast biomass and expressed per gram of cell protein. Fermentative capacity was assayed anaerobically under a CO2 atmosphere in complete mineral medium supplemented with 2% (wt/vol) glucose. The dashed line indicates the specific rate of ethanol production (qethanol; millimoles per gram of dry yeast biomass per hour) in chemostat cultures (Fig. 1A). Data are presented as the means and standard deviations of results from duplicate assays at different time points in the same steady-state chemostat cultures.