Fig. 4

Effects of initial xylose concentrations on 2,3-BD production. Cells were cultivated in YP medium supplemented with 40 g/l (filled circles), 60 g/l (filled squares) or 80 g/l (filled triangles) xylose at 42˚C under a shaking condition at 100 rpm. a Turbidity (OD₆₀₀) and the concentrations of b glucose, c 2,3-BD and d acetoin in the culture medium were determined as described in Materials and methods. Error bars indicate standard deviation of three independent experiments