Figure 4

Lactic acid production and sugar consumption from monosaccharides and plant biomass polysaccharides. Lactic acid (orange square), D-glucose (blue square), D-xylose (black square), L-arabinose (green square) concentrations were determined when A. brasiliensis was grown on monosaccharides (A, B, C) with D-glucose (A), D-xylose (B) or L-arabinose (C). A. brasiliensis was also grown on polysaccharides (D) to produce lactic acid from starch (blue circle) or xylan (black circle). For each, initial substrate concentration was of 50 g/l and 50 g/kg for monosaccharides and polysaccharides, respectively. Experiments were carried out in triplicate. Error bars show standard deviations.