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


     

Journal of Dairy Science Vol. 57 No. 3 290-295
© 1974 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 Similar articles in PubMed
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 Swenson, P. E.
Right arrow Articles by Dimick, P. S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Swenson, P. E.
Right arrow Articles by Dimick, P. S.

Oxidation of Medium Chain Fatty Acids by the Ruminant Mammary Gland1

P. E. Swenson2 and P. S. Dimick

Division of Food Science and Industry, The Pennsylvania State University, University Park, Pennsylvania 16802

ABSTRACT

Sodium (1-14C) decanoate and sodium (1-14C) dodecanoate were administered via intramammary infusion into two healthy lactating goats. Milk samples were collected from each side of the gland at specified intervals, and the lipids were extracted. In the decanoate experiment, the esterified short chain acids (butyrate through caprylate) contained approximately 6% of the radioactivity in the milk lipids isolated from the infused side of the gland, and the short chain acids from the noninfused side contained 20% of the radioactivity. Following the infusion of labeled dodecanoate, 2 and 5% of the lipid radioactivity was accounted for in the short chain fatty acids from the infused and non-infused side. Esterified butyrate was isolated and decarboxylated to determine the radioactive labeling pattern. Fifty-six percent of the butyrate label from the infused decanoate was in the carboxyl carbon whereas 65% from the dodecanoate was in the carboxyl carbon.

These data indicate oxidation of the medium chain fatty acids in the mammary gland and subsequent contribution to the short chain fatty acids of milk lipids. The contribution of a four carbon unit is evident rather than exclusively a two carbon unit as expected from ß-oxidation.

FOOTNOTES

1 Authorized for publication 8/15/73 as paper no. 4516 in the Journal Series of The Pennsylvania Agricultural Experiment Station.

2 Present address: Borden, Inc., 600 N. Franklin Street, Syracuse, NY 13204.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1974 by the American Dairy Science Association ®.