[PROBLEMS] To obtain a high-quality rice bran oil in a high yield from rice bran and to obtain a good defatted rice bran. SOLUTION: Extracting rice oil from rice bran obtained in the first treatment step, followed by first treatment step in which the enzyme is deactivated by immediately contacting superheated steam with fresh rice bran obtained in the rice milling process And a third processing step for separating and obtaining the defatted rice bran. In the first treatment step, it is preferable that superheated steam at 250 ° C. to 650 ° C. is brought into contact with the rice bran for 0.5 to 60 seconds. The extracted koji oil has a low acid value, and the defatted koji koji obtained is sterilized and has no off-flavor, and is used as an excellent meal. [Selection] Figure 1【課題】 こめ糠から優良なこめ油を高収率で取得し、かつ優良な脱脂こめ糠を取得する。【解決手段】 精米工程で得られた新鮮なこめ糠に直ちに過熱蒸気を接触せしめて酵素を失活させる第１処理工程と、次いで前第１処理工程で得られたこめ糠からこめ油を抽出する第２処理工程及び脱脂こめ糠を分離取得する第３処理工程とからなる。 第１処理工程では、こめ糠に２５０℃～６５０℃の過熱蒸気を０．５～６０秒間接触せしめることが好ましい。 抽出されたこめ油は酸価が低く、また得られた脱脂こめ糠は無菌で異臭がなく、優良なミールとして食用される。【選択図】図１
