Fatty acids, fatty alcohols, wax esters, and methyl esters from<i>Crambe abyssinica</i> and<i>Lunaria annua</i> seed oils

Abstract Crambe abyssinica and Lunaria annua , members of the Cruciferae family, have seed oil glycerides containing ca. 55舑65% of C 22 and C 24 unsaturated fatty acids. Fatty acids were prepared by saponification; fatty alcohols, by sodium reduction of glycerides; liquid wax esters, by p ‐toluenesulfonic acid‐catalyzed reaction of fatty acids with fatty alcohols; and methyl esters, by reaction of fatty acids with diazomethane. Solid hydrogenated glyceride oils and wax esters were compared with several commercial waxes. Chemical and physical constants were determined for the seed oils and their derivatives. Position of unsaturation in the Crambe fatty acids was determined by gas chromatographic analysis of the permanganate‐periodate degradation products. The major dicarboxylic acid was brassylic (C 13 ), proving the docosenoic acid to be erucic.

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