Thermotolerant ethanol-fermenting yeast,
Saccharomyces cerevisiae KNU5377, isolated from
sludge of a local industrial complex stream in
Korea, was evaluated for its capability for
lignocellulosic ethanol production from waste
newsprint in high temperature (Park et al, 2010)
[23]. In this fermentation, most of dry-defibrated
waste newspaper was first saccharified at 50 °C for
108 h using a commercial cellulase and, then with
the last addition of dry-defibrated newsprints to
the pre-saccharified broth, simultaneous
saccharification and fermentation (SSF) of 1.0 L of
reaction mixture was carried out at 40°C, slowly
being dropped from 50 °C, for further 72 h in a 5 L
fermentor by inoculating the overnight culture of
KNU5377. The maximum production of 8.4% (v/v)
ethanol was obtained when 250 g (w/v)/L of dry-
defibrated waste newspaper was used for ethanol
production by SSF. These results suggest that S.
cerevisiae KNU5377 is very useful for cellulose
ethanol production by the SSF system.