超临界CO_2从南海翡翠贻贝中萃取EPA和DHA的研究

Study on Extraction of Eicosapentaenoic Acid and Docosahexaenoic Acid from Jadeite Mussel of South China Sea by Supercritical CO 2

用超临界ＣＯ２对南海翡翠贻贝中萃取二十碳五烯酸（ＥＰＡ）和二十二碳六烯酸（ＤＨＡ）工艺进行了研究，得出其最佳工艺条件为：压力３５ＭＰａ，温度３５℃，ＣＯ２用量２ｍｌ／ｇ料，尿素用量为乙酯量的１０％。乙酯的萃取率达到６１．５％。ＥＰＡ和ＤＨＡ乙酯总含量（ｗ）达到２８３２％。

The technology of extraction of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) from Jadeite Mussel of South China Sea by supercritical CO 2 is studied.The optimum technological conditions are defined as follows:pressure is 35MPa,temperature is 35℃,every gram of raw material consumes 2ml of CO 2,consumption of urea is 10% of ethyl ester.The highest extraction rate of ethyl ester can reach 61.5%.Total mass fraction of EPA and DHA can give 28.32%.