Fig. 6

Fed-batch cultivation of strain SPO-07 using cellobiose (a, b) or glucose (c, d) as a carbon source. Time courses of 3-HP (a, c), other metabolites and dry cell weight (DCW) (b, d) are shown. The concentration of cellobiose (red circles), of glucose generated from cellobiose by cell surface BGL (dotted blue circles), of ethanol (purple triangles), acetate (gray triangles), glycerol (brown triangles), and DCW (orange squares) are shown. In d, glucose concentration is shown solid blue line. The cultivations were performed in triplicate (Additional file 1: Figure S2); representative results are shown here