Camelina oil and its unusual cholesterol content
- 428 Downloads
The oil in Camelina sativa L. Crantz has a combined linolenic and linoleic acid content that is greater than 50% and a relatively low saturated FA content (∼10%). Although the FA composition has been reported, no information is available on the sterol composition of camelina oil. The derivatized plant sterols were separated and quantified with capillary GC and their identity confirmed with GC-MS. The refined camelina oil sample contained approximately 0.54 wt% unsaponifiables, and over 80% of the unsaponifiables were desmethylsterols. Perhaps the most unusual characteristic of camelina oil is its relatively high content of cholesterol, particularly for a vegetable oil, since it contains several times the cholesterol found in other “high-cholesterol” vegetable oils. Camelina oil also contains relatively large amounts of another unusual sterol, brassicasterol. The major sterols identified in the camelina oil included cholesterol (188 ppm), brassicasterol (133 ppm), campesterol (893 ppm), stigmasterol (103 ppm), sitosterol (1,884 ppm), and Δ5-avenasterol (393 ppm).
Key WordsBrassicasterol camelina oil cholesterol desmethylsterols α-linolenic acid sterols unsaponifiables unsaturated fatty acids
Unable to display preview. Download preview PDF.
- 1.Knorzer, K.H., Evolution and Spreading of Gold of Pleasure (Camelina sativa s.l.), Ber. Dtsch. Bot. Gesellschaft. 91: 187–195 (1978).Google Scholar
- 2.Putnam, D.H., J.T. Budin, L.A. Field, and W.M. Breene, Camelina: A Promising Low-Input Oilseed, in New Crops, edited by J. Janick and J. Simon, John Wiley & Sons. New York, 1993, pp. 314–322.Google Scholar
- 3.Budin, J.T., W.M. Breen, and D.H. Putnam, Some Compositional Properties of Camelina (Camelina sativa L. Crantz) Seeds and Oils, J. Am. Oil Chem. Soc. 72:309–315 (1995).Google Scholar
- 6.Itoh, T., T. Tamura, and T. Matsumoto, Sterol Composition of 19 Vegetable Oils, J. Am. Oil Chem. Soc. 50:122–125 (1973).Google Scholar
- 7.Itoh, T., T. Tamura, and T. Matsumoto, Methylsterol Composition of 19 Vegetable Oils, —Ibid. 50:300–303 (1973).Google Scholar
- 10.Gunstone, F.D., J.L. Harwood, and F.B. Padley, Occurrence and Characteristics of Oils and Fats, in The Lipid Handbook, edited by F.D. Gunstone, J.L. Harwood, and F.B. Padley, Chapman & Hall, New York, 1986, pp. 104–105.Google Scholar
- 11.IUPAC, Standard Methods for the Analysis of Oils, Fats and Derivatives, Blackwell Scientific Publications, Pergamon Press, Oxford, 1979, IUPAC methods 2.301. and 2.303.Google Scholar
- 13.Leonard, E.C., Camelina Oil: α-Linolenic Source, inform 9:830–838 (1998).Google Scholar
- 14.Gunstone, F.D., Fatty Acid and Lipid Chemistry, Chapman & Hall, New York, 1996, pp. 7, 69.Google Scholar
- 16.Vlahakis, C., and J. Hazebroek, Phytosterol Accumulation in Canola, Sunflower, and Soybean Oils: Effects of Genetics, Planting Location, and Temperature, J. Am. Oil Chem. Soc. 77:49–53 (2000).Google Scholar