Variation in lipid composition of niger seed (Guizotia abyssinica Cass.) Samples collected from different regions in ethiopia
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Niger seed samples were collected from different regions in Ethiopia for determination of oil content, and of fatty acid, tocopherol and sterol composition in the seed oil by gas-liquid chromatography and high-performance liquid chromatography methods. There was a large variation in oil content, ranging from 29 to 39%. More than 70% of the fatty acids was linoleic acid (18∶2) in all samples analyzed. The other predominant fatty acids were palmitic (16∶0), stearic (18∶0) and oleic (19∶1) at a range of 6 to 11% each. Total polar lipids recovered after preparative thin-layer chromatography comprised a small fraction of the total lipids. They had higher 16∶0 and lower 18∶2 contents than the triacylglycerols.α-Tocopherol was the predominant tocopherol in all samples, 94–96% of the total amounting to 630–800 μg/g oil. More than 40% of the total sterols wasβ-sitosterol,ca. 2000μg/g oil. The other major sterols were campesterol and stigmasterol, ranging from 11 to 14%. The Δ5- and Δ7-avenasterols were in the range of 4 to 7%. From the samples studied, no conclusion could be drawn regarding the influence of altitude or location on oil content, tocopherol and/or sterol contents. The results of the present study on niger seed oil are discussed in comparison with known data for common oils from Compositae,viz, safflower and sunflower.
- Riley, K.W., and H. Belayneh, inOil Crops of the World, edited by G. Röbbelen, R.K. Downey and A. Ashri, McGraw-Hill Publishing Company, New York, 1989, p. 394.
- Appelqvist, L.Å.,--Ibid.Oil Crops of the World, edited by G. Röbbelen, R.K. Downey and A. Ashri, McGraw-Hill Publishing Company, New York, 1989, p. 22.
- Appelqvist, L.Å.,Arkiv För Kemi, Kungl. Svenska Vetenskapsakademien 28:551 (1968).
- Stobart, A.K., and S. Stymne, inMethods in Plant Biochemistry, edited by J.L. Harwood, and J.R. Bower, Academic Press, London 1990, p. 20.
- Nema, N.P., and L. Singh,Indian Oilseeds J. 9:192 (1965).
- Khidir, M.O., and A.K. Ahmed,Sudan J. Food Sci. Technol. 7:86 (1975).
- Ghiglione, C., and D. Lemordant,Bull. Trav. Soc. Pharm. Lyon 21:3 (1977).
- Nasirullal, T., Mallika, S. Rajalakshmi, K.S., Pashupathi, K.N. Ankaiah, S. Vibhakar, M.N. Krishnamurthy, K.V. Nagaraja and O.P. Kapur,J. Food Sci. Technol. 19:147 (1982).
- Seegler, C.J.P., inOil Plants in Ethiopia, Their Taxonomy and Agricultural Significance, Centre for Agricultural Publishing and Documentation, Wageningen, 1983, p. 122.
- Grieco, D., and G. Piepoli,Oleagineux 22:611 (1976).
- Seher, Von A., and U. Gundlach,Fette, Seifen, Anstrichm. 84:342 (1982). CrossRef
- Piorr, W., L. Toth and N. Novakovic,Z. Lebensmitt.-Untersuch. 138:11 (1967). CrossRef
- Slover, H.T., R.H. Thompson, Jr. and G.V. Merola,J. Am. Oil. Chem. Soc. 60:1524 (1983).
- Sil, S., J. Chakrabarti and R.S. Gandhi,J. Food. Sci. Technol. 27:234 (1990).
- Kochhar, S.P.,Prog. Lipid Res. 22:161 (1983). CrossRef
- Variation in lipid composition of niger seed (Guizotia abyssinica Cass.) Samples collected from different regions in ethiopia
Journal of the American Oil Chemists’ Society
Volume 71, Issue 8 , pp 839-843
- Cover Date
- Print ISSN
- Online ISSN
- Additional Links
- Fatty acids
- Guizotia abyssinica Cass
- nigher seed oil
- Industry Sectors
- Author Affiliations
- 1. Department of Food Hygiene, Swedish University of Agricultural Sciences, S-75007, Uppsala, Sweden
- 2. Department of Food Science, Swedish University of Agricultural Sciences, Box 7051, S-750 07, Uppsala, Sweden