PROBLEM TO BE SOLVED: To provide a method for producing ethanol, which enables raw material procurement continuously and steadily in commercially producing ethanol in our country and utilizes carbon dioxide as a byproduct in ethanol production.SOLUTION: The method includes the step of producing ethanol through liquefaction/saccharification by inoculating Aspergillus oryzae into rice washed water recovered in the treatment step for obtaining non-wash rice in a rice-polishing plant and concurrently through alcoholic fermentation by yeast addition, and the step of producing a functional food by extracting functional ingredients from a byproduct such as rice bran recovered in the rice-polishing plant by utilizing ethanol or carbon dioxide produced in the ethanol production step.COPYRIGHT: (C)2009,JPO&INPIT【課題】わが国で商業的なエタノール生産を行うにあたって継続的・恒常的に原料調達が可能であり、かつ、エタノール生産における副産物である二酸化炭素を有効活用する、エタノール製造方法の提供。【解決手段】精米工場における無洗米化処理工程で回収される研ぎ汁に麹菌を接種して液化・糖化させるとともに、酵母を添加してアルコール発酵させてエタノールを生産するエタノール製造工程と、前記精米工場で回収される米糠等の副産物に、前記エタノール製造工程で生産されたエタノール又は二酸化炭素を利用して機能性成分を抽出する機能性食品製造工程と、を備えたエタノール製造方法。【選択図】図1
