Fig. 6From: Directed evolution and secretory expression of xylose isomerase for improved utilisation of xylose in Saccharomyces cerevisiaeFermentation profiles of xylose-assimilating strains expressing different XIs and an empty vector. YPX medium containing 8% xylose was used as fermentation medium. Mean values and standard deviations of triplicates are shown. Symbols: Xylose (â–³), Ethanol (â– )Back to article page