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Fatty acids composition of oil from OS corn hybrids

The fatty acid composition is a characteristic of plant species and has nutritional, biochemical and technological importance. Grains of fifteen commercial OS corn hybrids were analyzed for oil content and fatty acids composition. The oil for fatty acid analysis was extracted with diethilether contained buthyhidroxytoluene. The fatty acid compositions of oils were determined by gas chromatography with flame ionization detection. Fatty acids were separated according to carbon atoms and number of double bonds and were identified by comparing their retention time to standards. Fatty acids were quantified based on peak area by method of area normalization. The oil content in investigated corn hybrids varied between 4, 04 and 5, 78% on dry matter basis. The amount of determined saturated fatty acids, palmitic (16:0) and stearic (18:0) were 8, 76– 11, 78 and 2, 00-2, 57%, respectively. Oleic acids were in the range 26, 68–37, 96%. Polyunsaturated fatty acids were between 45, 79 and 57, 88% for linoleic, and 0, 96 and 1, 37% for linolenic acid. There were significant differences between saturated, monounsaturated and polyunsaturated fatty acid of oil from corn hybrids. In selection, choosing hybrids with good quality traits can improve the nutritional and functional quality of the corn oil.

corn; oil content; corn oil; gas chromatography; fatty acids

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