Anhydrous milk fat fractionation with continuous countercurrent supercritical carbon dioxide
1993
Bhaskar, A.R. | Rizvi, S.S.H. | Sherbon, J.W.
A continuous pilot-scale supercritical carbon dioxide system was designed and built for separation and fractionation up to 400 g/hr of anhydrous milk fat. This fat was separated into five fractions (S1-S5) in the pressure range 24.1-3.4 MPa at 40-75 degrees C. The solvent/feed ratio was 62 with extraction yield 78 wt%. The short-chain (C4-C8) and medium-chain (C10-C12) fatty acids increased from S1-S5. The long-chain and unsaturated fatty acids (C14-C18) decreased gradually from S1-S5. The triglycerides followed the same trend as fatty acids. Cholesterol content decreased by 51% and beta-carotene concentration increased by 145% in the raffinate (S1).
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