JDS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Journal of Dairy Science Vol. 45 No. 3 311-316
© 1962 by American Dairy Science Association ®
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by El-Negoumy, A. M.
Right arrow Articles by Hammond, E. G.
Right arrow Search for Related Content
PubMed
Right arrow Articles by El-Negoumy, A. M.
Right arrow Articles by Hammond, E. G.

Relation of Linoleate and Linolenate to the Flavors of Autoxidized Milk Fat1

A. M. El-Negoumy, M. S. de Puchal and E. G. Hammond

Department of Dairy and Food Industry, Iowa State University of Science and Technology, Ames

ABSTRACT

Flavor concentrates obtained by high-vacuum distillation of the fat from autoxidized butter were fractionated by gas chromatography on butanediol succinate. The tallowy flavor of the concentrate was reproduced by recombining three of the 12 gas chromatograph fractions. The first of these components migrated close to octanal on the gas chromatograph and gave an oxidized flavor to milk. The second component migrated close to undecanal and gave a grassy flavor to milk. The third component was 2,4-decadienal, which gave milk an oily flavor. The component which gave an oxidized flavor in homogenized milk at low concentration gave a metallic flavor in the fat phase at higher concentrations. Methyl linoleate was a precursor for the oxidized and oily flavors, and methyl linolenate was a precursor of the grassy flavor. These compounds are probably responsible for the major flavor characteristics of other autoxidized fats and oils.

FOOTNOTES

1 Journal Paper No. J-4155 of the Iowa Agricultural and Home Economics Experiment Station, Ames, Iowa. Project No. 1128. A report of work done under contract with the U. S. Department of Agriculture and authorized by the Research and Marketing Act of 1946. The contract is being supervised by the Eastern Utilization Research and Development Division of the Agricultural Research Service.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1962 by the American Dairy Science Association ®.