One material that has potential as raw material for bioethanol is the pineapple peel. Pineapple peel is one of the biggest agricultural waste in Indonesia, especially in Riau derived from pineapples. Pineapple peel can be used as raw material for bioethanol production due to contains of fiber, carbohydrates and glucose. This study was conducted to produce ethanol by fermentation of pineapple pe…