< Topic >At the same time at high yield the liposoluble oil which contains the fucoxanthin which is extracted economically and that its production method and production method of fucoxanthin are offered are designated as purpose.SolutionsThe second process which extracts the liposoluble oil with the first process which it heats processes the alga and making use of the organic solvent from the alga which it heated processed with first process the liposoluble oil which almost includes fucoxanthin completely by the fact that it does is extracted, furthermore, can obtain from the alga which this it heated processed, can refine fucoxanthin easily by making the liposoluble oil where portion of the chlorophyll was disassembled by dampening the alga in the hot water karamukuromatogurahui of silica gel develop.< Selective figure >Figure 1【課題】高収率で且つ経済的に抽出されるフコキサンチンを含有する脂溶性油及びその製造方法並びにフコキサンチンの製造方法を提供することを目的とする。【解決手段】褐藻を加熱処理する第一の工程と、第一の工程で加熱処理した褐藻から有機溶媒を用いて脂溶性油を抽出する第二の工程とをおこなうことでほぼ完全にフコキサンチンを含む脂溶性油が抽出され、更に、この加熱処理した褐藻から得られ、熱水中に褐藻を浸すことによりクロロフィルの一部が分解された脂溶性油をシリカゲルのカラムクロマトグラフィに展開させることによりフコキサンチンを容易に精製できる。【選択図】図1
