Abstract
Summary These observations serve primarily as an additional item to the evidence which is being accumulated concerning vitamins and the food value of ice cream. 1.From the data presented in this paper it is concluded that an irradiated ice cream mix, prepared from winter cream, heals rickets in the white rat, whereas the non-irradiated product of the same batch of ice cream, fed at a maximum level of 8 per cent of the ration, does not produce a healing. 2.A variation of the temperature of the product during irradiation between 15.5° and 62.5°C. (60° to 145°F.), does not affect the activity of the material. 3.Freezing and low storage temperature do not affect the antirachitic value of irradiated ice cream for at least two months. 4.A definite correlation was not found between the inorganic blood phosphorus level and the degrees of healing as expressed in using the Shipley line technique, there being only a general accord between the two observations. There is no agreement between the results of the Shipley line test and the percentage of bone ash.
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