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The Fractionation of Shea Nut Oil Using Supercritical Carbon Dioxide — A Feasibility Study for the Extraction of Oil from Gum

✍ Scribed by Turpin, P. E. ;Coxon, D. T. ;Padle, F. B.

Publisher: John Wiley and Sons
Year: 1990
Weight: 575 KB
Volume: 92
Category: Article
ISSN: 0931-5985
DOI: 10.1002/lipi.19900920503

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✦ Synopsis

Supercritical carbon dioxide (SC-CO,) successfully extracted triglycerides from crude Shea nut oil (Butyrospensm purkii) at temperatures of 4O-8O0C and pressures of 100-400 bar. Selective removal of free fatty acid, mono-and &-glycerides, iron, triterpene acetates, triterpene cinnamates and polyisoprenoid gum from triglyceride was achieved by varying the solvent power of the SC-CO,. Triglyceride so produced had a higher stability to oxidation than the crude oil. Polyisoprenoid gum was essentially insoluble in SC-CO,. The extraction partially fractionated the triglycerides according tn their carbon numbers.

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