Sugar utilization
The C. shehatae FPL-Y-049 strain completely utilized
xylose, glucose, mannose, and galactose for growth and
ethanol fermentation of the wood hydrolyzate. However,
this strain did not ferment arabinose. When the
yeast was given only arabinose, growth started very
slowly and arabinose was subsequently converted into
arabitol (data not shown). Ethanol fermentation was
ecient, in the range of 40±80 g/l hydrolyzate sugar
concentrations. In the hydrolyzate batch with 120 g/l
fermentable sugar (batch VII), only 35 g/l ethanol was
obtained after about 76 h fermentation, as a result of
interference by inhibitors still present in the hydrolyzate
batch.