HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Stromer, M. H. Articles by Roberts, J. H. Search for Related Content PubMed Articles by Stromer, M. H. Articles by Roberts, J. H.

Cholesterol in Subcutaneous and Intramuscular Lipid Depots from Bovine Carcasses of Different Maturity and Fatness^{1, 2,}

Iowa State University, Ames

Abstract

Cholesterol analysis, using the Liebermann-Burchard reaction, was conducted on samples from 72 carcasses of different maturity and marbling scores. Samples were taken from the external and inner layers of subcutaneous fat dorsal to the l. dorsimuscle at the 12 13th thoracic vertebrae and from the l. dorsimuscle at the 5–8th thoracic vertebrae. Cholesterol content of both the internal and external layers of subcutaneous fat increased with advancing carcass maturity, but the increase occurred much earlier for the external layer. For the two younger maturity groups, the cholesterol content was lower in the internal layer. Intramuscular lipid contained more cholesterol than either subcutaneous fat layer. Cholesterol content of the l. dorsimuscle did not change with maturity, regardless of whether the data were expressed on a tissueweight or a lipid-content basis. On a lipid-content basis cholesterol content of the l.dorsi muscle increased with a decreasing marbling score, but on a tissue-weight basis cholesterol content did not differ among the different marbling scores. These data indicate that marbling contains no detectable cholesterol when analyzed by the methods used in this study and that highly marbled beef should not contribute any more to cholesterol intake than does beef with little marbling.

¹ Journal Paper No. J-5328 of the Iowa Agricultural and Home Economics Experiment Station, Ames, Iowa. Project 1549.

² The cooperation of Rath Packing Co., Waterloo, Iowa, is gratefully acknowledged.

³ Present address: Mellon Institute, 4400 Fifth Avenue,Pittsburgh, Pennsylvania.

⁴ Present address: Cardiovascular Research Laboratory, University of California, Los Angeles.