Application of immobilized yeast could lower the inhibitory effects in media with high sugar
content [5, 6]. The yeast cells entrapped in different gel matrices [5] or adsorbed on sintered
glass beads [6] fermented sugar faster than the free yeast in high-density media. Nevertheless,
the osmotolerance of the immobilized yeast varied from matrix to matrix. From the last decade,
using natural supports with high-cellulose content for yeast immobilization has attracted great
attention [3]. These supports are low in cost, environmentally friendly, and abundantly available
in many world regions [7]. Yeast cells adsorbed on different cellulosic supports were used in
ethanol fermentation and the sugar concentration in the medium varied from 50 to 200 g/L
[8–10]. There have been so few studies on alcoholic fermentation performance of the
immobilized yeast on cellulosic supports in high-density media