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    • 2. 发明申请
    • PROCESS FOR THE PURIFICATION OF ASTAXANTHIN
    • ASTAXANTHIN的纯化方法
    • WO2015067706A1
    • 2015-05-14
    • PCT/EP2014/073955
    • 2014-11-06
    • DSM IP ASSETS B.V.
    • KARRER, PhilippeWUESTENBERG, Bettina
    • A23L1/30A61K9/16C07C403/24
    • A23L33/10A23L33/105A61K9/1652C07C403/24C07C2601/16C09B61/00C09B67/0096
    • The present invention is directed to a process for the manufacture of synthetic food-grade astaxanthin with a content of dichloromethane ≤ 250 ppm comprising the following steps: a) Providing synthetic astaxanthin crystals containing dichloromethane in a reactor; and b) Adding methanol to the synthetic astaxanthin crystals in an amount to obtain a suspension of synthetic astaxanthin in methanol, whereby the amount of synthetic astaxanthin in said suspension is in the range of from 5 to 70 weight-%, based on the total weight of the suspension, and closing the reactor; and c) bringing the suspension obtained in step b) to a temperature in the range of from 80 to 140°C; and d) Maintaining the suspension at the temperature as reached in step c); and e) Bringing the methanolic synthetic astaxanthin suspension to atmospheric pressure by releasing overpressure; and f) Cooling the synthetic astaxanthin suspension to a temperature in the range of 10 to 35°C; and g) Filtering off the synthetic astaxanthin crystals and drying them; whereby during the process the total amount of synthetic astaxanthin is not completely solved in the methanol at the same time, and whereby a synthetic food-grade astaxanthin with a content of dichloromethane
    • 本发明涉及制备含二氯甲烷≤250ppm的合成食品级虾青素的方法,包括以下步骤:a)在反应器中提供含有二氯甲烷的合成虾青素晶体; 和b)向合成的虾青素晶体中加入一定量的甲醇以获得合成的虾青素在甲醇中的悬浮液,由此所述悬浮液中合成的虾青素的量在5-70重量%的范围内,基于总重量 的悬浮液,并关闭反应器; 和c)使步骤b)中获得的悬浮液在80-140℃的温度范围内; 和d)将悬浮液维持在步骤c)中达到的温度; 和e)通过释放超压将甲醇合成的虾青素悬浮液引入大气压; 和f)将合成的虾青素悬浮液冷却至10至35℃的温度; 和g)过滤合成的虾青素晶体并干燥; 由此在该过程中,合成的虾青素的总量不能同时在甲醇中完全溶解,由此得到含有二氯甲烷<250ppm的合成食品级虾青素。 代替合成的虾青素晶体,也可以将合成的虾青素在二氯甲烷中的溶液用作原料。