Identification of 11,15‐octadecadienoic acid from beef and mutton tallow

Publisher Website
Google Scholar
Abstract
By means of gas liquid chromatography and thin layer chromatography on Silica gel G/AgNO3 we isolated some isolinoleic acids from beef and mutton tallow, which by their chromatographical behavior, IR analysis and by double bond determination by ozonolysis are mainly stereo‐isomeric 11,15‐octadecadienoic acids and in a smaller amount stereo‐isomers of 10,15‐octadecadienoic acids. 4‐Cis‐ and 4‐trans‐heptenals, 2‐trans,6‐cis‐ and 2‐trans,6‐trans‐nonadienals have been isolated from the DNPH mixture obtained from the volatile decomposition products of an oxidized synthetic mixture of stereo‐isomeric 11,15‐octadecadienoic acids.