Combining NMR Spectroscopy and Gas-Liquid Chromatography for Analysis of the Fatty Acid Composition of Fenugreek Seed Oil (Trigonella foenum graecum L.)
| Autor: | S. A. Lamotkin, E. D. Skakovskii, E. G. Karankevich, V. A. Mauchanava, V. N. Reshetnikov, L. Yu. Tychinskaya, A. D. Ahabalayeva |
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| Rok vydání: | 2013 |
| Předmět: |
chemistry.chemical_classification
Fenugreek Seed Oil Chromatography Trigonella biology food and beverages Fatty acid Nuclear magnetic resonance spectroscopy Condensed Matter Physics biology.organism_classification chemistry.chemical_compound chemistry Glycerol Gas chromatography Spectroscopy Unsaturated fatty acid Polyunsaturated fatty acid |
| Zdroj: | Journal of Applied Spectroscopy. 80:779-782 |
| ISSN: | 1573-8647 0021-9037 |
| Popis: | 1H and 13C NMR spectroscopy established that fenugreek seed oil consists mainly of triacylglycerides. Oleic and linoleic acids are found preferentially in the 2 position and α-linolenic acid is found preferentially in the 1,3 positions of the glycerol backbone. By combining NMR and gas-liquid chromatography, we have shown that fenugreek seeds contain 5.5 %-6.8 % oil, consisting mainly of unsaturated fatty acids (68.2 %–82.1 %): linoleic (31.3 %–46.8 %), α-linolenic (15.1 %–36.6 %), and oleic (11.6 %–21.3 %). The highest unsaturated fatty acid content is found in the cultivars D-19, Ovary Gold, Blidet, Ovary 4 and the lowest fatty acid content is found in the Metha cultivar. The percentage of polyunsaturated fatty acids is higher in oils of fenugreek cultivars from northern regions (Belarus, Hungary, France). |
| Databáze: | OpenAIRE |
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