presents the EFB composition before and after pretreatment. Approximately 51.7% of the EFB consisted of cellulose and hemicellulose, which are very promising substrates for ethanol production. The theoretical yield of ethanol was based on the assumption that all of the glucose in the raw material could be converted into ethanol with a yield of 0.51 g ethanol/g glucose. According to the cellulose content, the theoretical yield of ethanol was estimated to be 19.6 g ethanol from raw material.s.