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Department of Dairy Science, The Pennsylvania State University, University Park
ABSTRACT
The metabolic fate of fats in the human diet is a current problem of considerable importance. One of the basic needs in this problem is for better analytical methods and more detailed information on the composition of both body and dietary lipids. Of the latter, milk fat is one of the most widely consumed and it is considered of particular interest that this fat consistently contains significant amounts of a high-melting glyceride fraction (HMFG) which has been only partially characterized. The discovery of this fraction and the information available on it stem from the work of Palmer and associates. A brief summary of its properties and distribution as reported by Jenness and Palmer (4) is as follows:
The HMGF is associated with the protein-phospholipid complex in the so-called membrane of milk fat globules. It occurs in milk fat to the extent of approximately 5% and in butter serum extracts, which represent a very small proportion of the total milk lipids, at a concentration of about 37%.
1 Authorized for publication on March 5, 1958 as Paper No. 2240 in the Journal Series of the Pennsylvania Agricultural Experiment Station.
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