Inhibition of the hydrolysis products can be reduced by processes
of simultaneous saccharification and fermentation – SSF.
Technological conditions for the SSF are a compromise between
optimal conditions for hydrolysis and optimal conditions for the
activity of microorganisms mainly due to the difference in the optimal
temperature for the hydrolysis process (45–50 C) and the
temperature suitable for the fermentation by commonly used fermentation
microorganisms (e.g. 28–35 C for Saccharomyces cerevisiae).
The temperature chosen for the SSF in such case is lower than
optimal temperature for the enzymatic activity (Szczodrak and Fiedurek,
1996). An increase of the SSF process temperature can be
achieved using a strain of some thermotolerant microorganism
(Kádár et al., 2004).