Dynamic supercritical CO2 extraction for removal of cholesterol from anhydrous milk fat
- 1 April 1996
- journal article
- Published by Oxford University Press (OUP) in International Journal of Food Science & Technology
- Vol. 31 (2) , 143-151
- https://doi.org/10.1111/j.1365-2621.1996.326-28.x
Abstract
The feasibility of different extraction techniques for the selective removal of cholesterol from anhydrous milk fat (AMF) by supercritical carbon dioxide has been studied. A dynamic extraction system was used to determine both the experimental solubility of anhydrous milk fat in the supercritical solvent and the selectivity of cholesterol over anhydrous milk fat at 40–70°C and 8–40MPa at various stages during extraction. In addition, adsorbents were used for the selective removal of cholesterol from anhydrous milk fat. The results indicate that a direct extraction alone or with several separators in series are not practical, but a selective removal of 97% of the cholesterol from the extracted anhydrous milk fat is possible by using an adsorbent with recovery of solvent and cholesterol. A schematic industrial countercurrent process for the removal of cholesterol and the fractionation of milk fat is proposed.Keywords
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