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CLA 1

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CLA的生理活性和应用前景

张根旺,郭诤,杨天奎

《中国工程科学》 2001年第3卷第7期页码 85-89

摘要：

CLA是20世纪80年代末才被发现具有许多重要生理活性的天然脂肪酸，文章讨论了CLA的涵义界定、天然存在、重要的生理活性及其应用前景。

关键词： CLA 生理活性应用前景

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Supercritical carbon dioxide extraction of CLA-ethyl ester

Yingdi CHEN, Peng XU, Jian CHENG

《化学科学与工程前沿（英文）》 2011年第5卷第1期页码 102-106 doi: 10.1007/s11705-010-0536-3

摘要： Supercritical carbon dioxide (SC-CO ) extraction of Conjugated linoleic acid (CLA) ethyl ester was investigated at pressures in the range of 9 to 10.5 MPa and temperature gradients ranging from 0°C to 21°C. The content of CLA-ethyl ester in the fraction was analyzed with gas chromatography (GC). The experimental results indicated that the rate of extraction would rise with the increase of pressure when temperature gradient was given. Moreover, the extraction pressure had insignificant influence on the selectivity of CLA-ethyl ester in SC-CO . When pressure was fixed, setting certain temperature gradient can improve the selectivity of CLA-ethyl ester in SC-CO , and CLA-ethyl ester can be concentrated more effectively than without a temperature gradient. The acid value and peroxide value of the fractions were reduced obviously, compared to the raw material. The optimal condition is pressure at 10 MPa and temperature gradient at 11°C.

关键词： supercritical carbon dioxide extraction CLA-ethyl ester temperature gradient