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 Supplee, G. C. Articles by Dorcas, M. J. Search for Related Content PubMed Articles by Supplee, G. C. Articles by Dorcas, M. J.

Irradiated Milk: The Influence of Fat Content and Time of Exposure on the Antirachitic Potency

The Dry Milk Company Research Laboratories, Bainbridge, New York

M. J. Dorcas

The National Carbon Company, Cleveland, Ohio

ABSTRACT

Studies recently reported (1) show that a large percentage of the incident ultraviolet rays within the antirachitic range are absorbed by milk films less than 0.10 millimeter thick. Notwithstanding this high percentage absorption by the immediate surface layers, a relatively high antirachitic activity was obtained in less than 2 seconds and in some instances in less than 1 second, in rapidly flowing films. The data also revealed that the particular conditions of treatment involving the application of radiations of high intensity to films of known thickness and rate of flow, imparted measurable antirachitic properties to milk derivatives containing little or no butter fat. The degree of activation obtained in milks of variable fat content was not in proportion to the amount of fat present. It has been shown by Hess and coworkers (2) (3) (4) that clinical, as well as the laboratory assay, results from milks containing 1.2 per cent butter fat and 3.6 per cent butter fat were substantially the same when identical methods of irradiation were used.