✦ LIBER ✦

Fractionation of Gluten Lipids with Supercritical Carbon Dioxide

✍ Scribed by Hammam, H. ;Sivik, B.

Publisher: John Wiley and Sons
Year: 1991
Weight: 444 KB
Volume: 93
Category: Article
ISSN: 0931-5985
DOI: 10.1002/lipi.19910930304

No coin nor oath required. For personal study only.

✦ Synopsis

Gluten lipids are of two kinds, polar and nonpolar. Both groups consist of a large number of lipids. Gluten lipids can be extracted by conventional solvents as ethanol but also by supercritical carbon dioxide. The high density and the good mass transport properties make the supercritical fluid an excellent solvent. Ethanol extracted gluten lipids have been fractionated with supercritical CO, at different pressures and constant temperature. The extract contains higlycerides and free fatty acids, and a more concentrated fraction of polar lipids is left in the extraction vessel. While both polar and nonpolar lipids are soluble in ethanol, only nonpolar lipids are dissolved by supercritical CO,. An addition of a small amount of ethanol to the CO,, can, however, increase the solubility of the polar lipids.

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