Immobilization of three commercial yeast strains was carried out using rice flour and white glutinous
rice flour. For the immobilization result, the structure of yeast strains in white glutinous rice flour support
was more brittle compare to yeast strain in rice flour. The cells immobilized in white glutinous rice flour
yielded higher alcohol concentration than that of immobilized in rice flour with highest alcohol content
was reached by yeast strain C with 5.4% of ethanol concentration. Applying the immobilized yeast strain
C in white glutinous rice flour for fermentation process resulted in 5.4% ethanol concentration. Although
the final ethanol content produced by immobilized yeast strain was still lower compareto the non