Fatty acid distribution in triacylglycerols from aril and cotyledon oils of Afzelia cuanzensis
1996
Vlahov, G.
The seeds of Afzelia cuanzensis were previously reported to have a high oil content, the aril oil being made up of the common C18 saturated, mono- and all-unsaturated fatty acids, whilst the oil from cotyledons, beside oleic and linoleic acids, contained large amounts of crepenynic and dehydrocrepenynic acids (together 60%). We determined the acyl composition and acyl positional-distribution (1,3-acyl and 2-acyl) of triacylglycerols from arils and cotyledons, respectively, by 13C NMR spectroscopy. Positional analysis of the oil from cotyledons indicated a preferential placement of oleic and linoleic (both 65%) than crepenynic and dehydrocrepenynic acids (both 25%) at position 2. In both aril and cotyledon oils, the saturated acids are exclusively in the 1,3-position of glycerol.
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