Three methods were compared for extracting adenylates from barley roots prior to their quantification by a lumino-metric method. In respect of efficiency in extracting adenylates and easiness in handling, the best result was obtained in the root sample which was homogenized in perchloric acid, neutralized by mixing with octylamine dissolved in 1,1,2-trichloro-1,2,2-trifluoroethane and centrifuged.高等植物根のアデニル酸をルシフェリン－ルシフェラーゼ法による定量に適する抽出法を捜すために、数種の抽出法を比べた。過塩素酸で抽出し、オクチルアミンで中和し、フロンの一種で洗う方法が最も抽出効果が高く、また比較的操作が簡便であった
