In the preliminary experiments, the starch contents of rice
cultivars were examined, and it was found that there were no
significant differences in starch content between glutinous rice
group (mean ¼ 89.39 g/100 g, on dry basis) and non-glutinous rice
group (mean ¼ 89.97 g/100 g on dry basis). Park et al. (2005)
mentioned that the content of free sugars in the fermented mash
of glutinous rice included maltose, glucose, fructose and sucrose,
and their contents were 2.03 g/100 g, 2.52 g/100 g, 0.18 g/100 g and
0.25 g/100 g, respectively, however, the free sugars in the fermented
mashes of non-glutinous rice only included maltose and
glucose, and the contents were 0.95 g/100 g and 1.95 g/100 g,
respectively. In terms of the reducing sugar contents of turbid rice
wine mashes, the glutinous rice cultivars showed higher contents
than those of non-glutinous rice. These may potentially explained
the slightly lower alcohol yields for glutinous rice than for nonglutinous
rice.