The present invention provides a method for producing a brown algae or a brown algae extract in which iodine is reduced while retaining a pigment component in the brown algae. SOLUTION: After chopping an untreated brown algae raw material, heat treatment is performed for 90 seconds to 300 seconds with hot water at 90 ° C. to 100 ° C. Iodine in a state where the pigment component in the brown algae is retained. A method for producing brown algae that is reduced. Further, the brown algae obtained by reducing iodine in a state in which the pigment component in the brown algae is retained, wherein the brown algae obtained above are extracted using water-containing ethanol having a concentration of 60% to 100%. A method for producing an extract. [Selection] Figure 1【課題】本発明は褐藻類中の色素成分を保持した状態でヨウ素を低減化させた褐藻類または褐藻類抽出物の製造法を提供すること。【解決手段】未処理褐藻類原料を細断後、９０℃～１００℃の熱水により９０秒～３００秒間加熱処理を行うことを特徴とする褐藻類中の色素成分を保持した状態でヨウ素を低減化させてなる褐藻類の製造方法。さらに、前記で得られた褐藻類を６０％～１００％濃度の含水エタノールを用いて抽出することを特徴とする、褐藻類中の色素成分を保持した状態でヨウ素を低減化させてなる褐藻類抽出物の製造方法。【選択図】図１
