Premium
Fatty acids, fatty alcohols, wax esters, and methyl esters from Crambe abyssinica and Lunaria annua seed oils
Author(s) -
Miwa T. K.,
Wolff I. A.
Publication year - 1963
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02609659
Subject(s) - glyceride , saponification , organic chemistry , chemistry , fatty acid , wax , fatty alcohol , monoglyceride , saponification value , degree of unsaturation , polyunsaturated fatty acid
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.