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Figure 3 | Biotechnology for Biofuels

Figure 3

From: Carbon dioxide fixation by Calvin-Cycle enzymes improves ethanol yield in yeast

Figure 3

Physiological impact of expression of Calvin cycle enzymes on growth, substrate consumption and product formation in galactose-grown anaerobic batch cultures of S. cerevisiae . a: growth curves of isogenic reference strain S. cerevisiae IMU032, b: growth curves of S. cerevisiae IMU033 expressing PRK and Rubisco. Growth conditions: T = 30°C, pH 5.0, 10% CO2 in inlet gas. Each graph represents values for one of two independent replicate experiments, whose growth kinetic parameters differed by less than 5%. c-f: Calculated parameters: Maximum specific growth rate (c), biomass yield (d), glycerol yield (e), and ethanol yield (f) on galactose of the isogenic S. cerevisiae reference (black bars) and strain expressing PRK and Rubisco (white bars). Results are represented as average ± mean deviations of data from independent duplicate cultures. Values inside the white bars represent statistically significant differences in a standard t-test (p value < 0.02) relative to the reference strain.

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