Figure 1

Profiles throughout the simultaneous saccharification and fermentation of lime-treated wheat straw by commercial enzyme preparation and Saccharomyces cerevisiae at pH 5.0 and 37°C. (A) The formation of sugars. (B) The production of carbon dioxide. (C) The production of fermentation products. The dotted line represents the addition of yeast and discriminates between a prehydrolysis phase (I) and simultaneous saccharification and fermentation phase (II). The error bars in the symbols denote the deviation of duplicate measurements.