S. Patton, B. W. Tharp
1959
Citations
0
Influential Citations
37
Citations
Journal
Journal of Dairy Science
Abstract
Summary An homologous series of methyl ketones was identified, by means of their 2,4-dinitrophenylhydrazones, in both the steam distillate and the unsaponifiable matter from milk fat. This series contains the n-alkyl members with odd numbers of carbons from C 3 (acetone) through C 15 (pentadecanone-2). Evidence is presented that fresh unheated milk fat is devoid of such ketones, with the exception of acetone, but that it does contain carbonyl functions as suggested by its reaction with 2,4-dinitrophenylhydrazine reagent. The capacity of milk fat to generate methyl ketones is discussed in terms of origin and flavor significance. A means of overcoming anomalous melting-point behavior of certain 2,4-dinitrophenylhydrazones is presented.