### Supercritical carbon dioxide extraction of CLA-ethyl esterSupercritical carbon dioxide extraction of CLA-ethyl ester

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 Author Chen, Yingdi ♦ Xu, Peng ♦ Cheng, Jian Source SpringerLink Content type Text Publisher SP Higher Education Press File Format PDF Copyright Year ©2010 Language English
 Subject Domain (in DDC) Natural sciences & mathematics ♦ Chemistry & allied sciences Subject Keyword supercritical carbon dioxide ♦ extraction ♦ CLA-ethyl ester ♦ temperature gradient ♦ Nanotechnology ♦ Industrial Chemistry/Chemical Engineering Abstract Supercritical carbon dioxide (SC-CO$_{2}$) 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$_{2}$. When pressure was fixed, setting certain temperature gradient can improve the selectivity of CLA-ethyl ester in SC-CO$_{2}$, 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. ISSN 20950179 Age Range 18 to 22 years ♦ above 22 year Educational Use Research Education Level UG and PG Learning Resource Type Article Publisher Date 2010-06-24 Publisher Institution Chinese Universities Publisher Place Heidelberg e-ISSN 16737474 Journal Frontiers of Chemical Engineering in China Volume Number 5 Issue Number 1 Page Count 5 Starting Page 102 Ending Page 106