The X, G and S.C. strains were grown using the SSF process in reactors to which the enzymes that consisted of the cellulose complex were added as well. The SSF process was conducted at anaerobic conditions with 6.7% solid concentration and incubated at 35 °C for 240 h. The released glucose by the SSF process was utilized simultaneously by the yeasts which produce ethanol during the process (Fig. 5). The final ethanol concentration produced by the three yeasts were similar and it was about 30 mg/g dried OMSW. However, the yeast X behaves differently than the strains G and S.C., and utilized most of the glucose after 24 h and the maximum glucose utilization was obtained after 120 h. However, the strains G and S.C. utilized most of the glucose after 120 h and the maximum glucose utilization was obtained after 240 h.