Figure 4
Comparison of D-xylose fermentation using Saccharomyces cerevisiae strains engineered to express the P. ruminicola D-xylose isomerase and D-xylulokinase genes vs. expression of the Scheffersomyces stipitis D-xylose reductase and xylitol dehydrogenase genes. Fermentations were performed using YP medium with 50 g/L D-xylose. Pressure was measured every 15 minutes and converted to mmoles of CO2. Data shown are from a single representative fermentation from experiments performed in triplicate.