Carbon dioxide yield (Y
) and biomass yield (Y
) at different specific substrate uptake rates in fed batch cultivations. YCO2/S fed batch A (black triangle up), YX/S fed batch A (grey triangle up); YCO2/S fed batch B (black diamond), YX/S fed batch B (grey diamond); YCO2/S fed batch C1 (black triangle down), YX/S fed batch C1 (grey triangle down); YCO2/S fed batch C2 (black circle); YX/S fed batch C2 (grey circle). The error of determined yields (5%) is not shown for better readability.