Oil of Fevillea trilobata has the composition palmitic acid 31%, stearic acid 12%, oleic acid 11%, linoleic acid 7%, cis,trans,cis 9,11,13‐octadecatrienoic acid 30% and cis,trans,trans ‐9,11,13‐octadecatrienoic acid 9%. The oil was analyzed and components identified by 13 C NMR spectroscopy; the composition was also confirmed by conventional methods. Assignment of 13 C NMR signals of conjugated trienoic acids is discussed and it is shown that mixtures of isomeric conjugated acids can be analyzed by this method.
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Tulloch et al. (1979) studied this question.
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