PROBLEM TO BE SOLVED: To provide a removal method of a cyanide compound in linseed processable inexpensively in large quantities, capable of suppressing acid value increase of an oil portion caused by heating, and removing efficiently a cyanide compound contained in the linseed to 10 ppm or lower.SOLUTION: A heat treatment method of linseed includes a step for heating the linseed and water in a sealed type container capable of storing the linseed and water, and having a steam discharge port, and for mixing and heating the linseed and water, while maintaining discharge of steam as long as 15 minutes or longer after start of the discharge of steam generated inside the container from the steam discharge port.SELECTED DRAWING: NoneCOPYRIGHT: (C)2019,JPO&INPIT【課題】加熱による油分の酸価上昇を抑制し、亜麻仁に含まれるシアン化合物を効率よく10ppm以下まで除去することができる、安価で且つ大量に処理できる亜麻仁のシアン化合物の除去方法を提供することを課題とする。【解決手段】蒸気排出口を備えた、水及び亜麻仁を収容可能な密閉式容器内で亜麻仁及び水を加熱し、蒸気排出口から該容器内部で発生した蒸気の排出が始まってから15分間以上、蒸気の排出を維持しながら亜麻仁と水を混合加熱する工程を含む、亜麻仁の熱処理方法により上記課題を解決する。【選択図】なし
