A preparation method of Narcissus alcohol extract having the function of inhibiting fat accumulation and reducing body fat, which is obtained by extracting the fresh algae algae into the algae powder and extracting the nasol algae powder with 95% alcohol to prepare the algae Alcohol extract； this can be used as a raw material, feed additive or food as a food for the inhibition of adipocyte proliferation and lipid accumulation in the concentration of 1-50 μg/mL, and the alcohol extract of Candida can be further extracted and purified. Candida algae polysaccharide and three raw materials. In this way, through the Candida algae alcohol extract has different antioxidant capacity and contains phytochemicals beneficial to the human body, in the 3T3-L1 cell culture mode, the pro-cell proliferation ability and the body fat reduction effect can be seen in the 3T3-L1 cell culture mode. And 2% candida algae has a good consumer acceptance, through cold or boiled cooking, for consumption can not only inhibit the accumulation of triglycerides in fat cells, but also reduce the proliferation of 3T3-L1 preadipocytes Ability to achieve the effect of reducing fat cell formation.一種具有抑制脂肪累積及減少體脂肪之念珠藻酒精萃取物之製備方法，係將新鮮念珠藻經烘乾磨碎為念珠藻粉後，使用95%酒精萃取該念珠藻粉，以製成念珠藻酒精萃取物；此可以濃度1～50 µg/mL作為念珠藻保健食品之原料、飼料添加物或作為食品，以抑制脂肪細胞增生與脂質堆積，並且該念珠藻酒精萃取物可作為進一步萃取、純化念珠藻多醣及三萜之原料。藉此，透過念珠藻酒精萃取物具有不同之抗氧化能力並且含有對於人體有益之植化素，其在3T3-L1細胞培養模式中可以看到前脂肪細胞增生能力下降與減少體脂肪之效果，並以2%念珠藻麵具有良好之消費者接受度，經由涼拌或是水煮等烹調下，以供食用後不僅可抑制脂肪細胞累積三酸甘油脂，還能減少3T3-L1前脂肪細胞增生能力，從而達到降低脂肪細胞形成之效用。
