The present invention relates to a method of purifying fucoxanthin of hincksia mitchellea into micro particles, in which an ultrasonic solvent extraction method, a twice normal-phase column chromatography method, and a supercritical anti-solvent precipitation method are combined to purify fucoxanthin of hincksia mitchellea for being prepared into micro particles. Each gram of the finally obtained supercritical anti-solvent precipitate contains 886.2 milligrams of fucoxanthin, and the recycling rate is as high as 98.7%.一種純化棲狀褐茸藻之岩藻黃質成為微米顆粒之方法,結合超音波溶劑萃取法、兩次正相管柱層析法、以及超臨界抗溶沉澱法,進行純化棲狀褐茸藻粉之岩藻黃質並製備成微米級顆粒,最終所獲得的的超臨界抗溶沈澱物中每克含有886.2毫克的岩藻黃質,回收率可達98.7%。
