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Journal of Dairy Science Vol. 26 No. 10 893-907
© 1943 by American Dairy Science Association ®
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A Critical Study of the United States Public Health Service Definition for Homogenized Milk with Some Recommendations1

F. J. Doan and E. W. Mykleby2

Pennsylvania Agricultural Experiment Station, State College, Pa.

ABSTRACT

Homogenized milk was first defined by the United States Public Health Service in the 1939 edition of the recommended Milk Ordinance and Code.

In the intervening years this definition has been adopted by some health agencies, made the basis of a modified definition by others and has been used by many milk dealers as a standard for efficient processing with which their product could be compared. There has been, however, no commonly accepted procedure for carrying out the determinations involved in the definition.

Several investigators (2, 3, 9, 11, 13) have found that the definition is not easy to comply with and have criticized it for failing to specify a definite method of obtaining the top 100 cc. of a quart bottle of milk for analysis, for not stating the temperature at which the milk should be stored and for failing to specify a method of analysis. They have shown that different methods for removing the upper layer of milk from a quart bottle, after storage, result in varying fat contents but unfortunately different procedures for accomplishing this have been proposed.

FOOTNOTES

1 Authorized for publication February 10, 1943, as paper No. 1165 in the Journal Series of The Pennsylvania Agricultural Experiment Station.

2 Fellow under Dairy Industries Supply Association Fellowship which made possible the larger portion of these studies.






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Copyright © 1943 by the American Dairy Science Association ®.