Comparison of relative DCWs (black bars) and hydrogen production (gray-shaded bars) for T. aotearoense SCUT27/ Δldh using different sugars as carbon source. (a) Using single sugar as carbon source, (b) using sugar mixture as carbon source (1:1, w:w). Relative DCW and hydrogen production were calculated with respect to that using glucose as the sole carbon source. The error bars represent the standard deviation (SD) (n = 3). The data were collected and calculated after 24 h incubation at 55°C, except those from beechwood xylan and dextran, which were recorded after 48 h cultivation. Experiments were carried out in triplicate.