404 IV. WAXES, HIGHER ALCOHOLS, ETC. 



A number of ketones are also found to be associated with the waxes; 

 these may be related to the hydrocarbons. They include a di-n-tetradecyl 

 ketone^^^ in cabbage, as well as n-nonacosane-15-one, which could be ex- 

 pected because of the high content of nonacosane*^^ in this vegetable. The 

 latter ketone has also been separated from the lipids of brussels sprouts by 

 Sahai and Chibnall.^^ Markley et al.^^^ have also reported a ketone with a 

 formula of C30H52O in grapefruit peel wax, but they believe that this belongs 

 to the polyterpenes. 



«i H. J. Channon and A. C. Chibnall, Biochem. J., 23, 168-175 (1929). 



