Effect of initial buffer pH on SSF of pretreated switchgrass by S.
cerevisiae D5A
Suryawati et al. (2008) found that SSF of switchgrass with S.
cerevisiae D5A at 37 C with initial buffer pH of 4.8 resulted in a final
ethanol yield of 79% MTY, however, in a similar experiment
previously carried out in this work with initial buffer pH of 5.5, a
final ethanol yield of 92% MTY was obtained. To determine if the
buffer pH had an effect on ethanol production during SSF of
switchgrass by S. cerevisiae D5A, SSFs were carried out using buffers
at pH 5.5 and 4.8 and compared in terms of ethanol yield.
In SSFs with buffer pH 5.5, glucose concentration increased rapidly
during the first 4 h, as shown in Fig. 2, followed by a continuous