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Supercritical fluid fractionation process for phytosterol ester enrichment vegetable oils
- Dunford, N.T., King, J.W.
- United States Department of Agriculture patents 2004 no.US 6,677,469 B1
- vegetable oil, deacidification, food fortification, phytosterols, fatty acid esters, ferulic acid, fatty acids, rice bran oil, corn products, essential oils, safflower oil, soybean oil, fractionation, supercritical fluid extraction, cholesteryl esters, patents, USDA, fortified foods, United States
- A two-step (two-stage) columnar supercritical fluid fractionation process enriches phytosterols and phytosterol esters in vegetable oils, particularly vegetable oils containing oryzanol and/or fatty acid or ferulic esters of phytosterols. The first stage is a deacidification and the second stage is a phytosterol enrichment. The method may be conducted in a continuous or semi-continuous mode of column operation and yields a product that is essentially free of residual objectionable or organic solvent.