Sterilized or pasteurized milk does not keep as well as raw milk probably on account of the change in the ferments which destroy bacteria; therefore the baby’s milk should be pasteurized fresh every day.
Freeman’s pasteurizer is a very satisfactory and simple device. It consists of a metal pail into which is fitted a rack with a separate cylinder for each bottle. This holds just enough cold water to surround the bottle and keep it from cracking through a sudden change of temperature. The pail, containing a certain amount of water, is placed on the stove, the water is heated to the boiling point, the pail being then removed. The rack of bottles containing the milk preparation, with corks of non-absorbent cotton, is placed in it and the lid applied. The apparatus is placed away from a direct current of air for about forty-five minutes.
As the water in the pail cools, the milk in the bottles grows warm until both are at the same temperature. After forty-five minutes, cold water is turned into the pail to cool the bottles rapidly. They are then kept on ice until again warmed ready for use.
This is the simplest and best way to pasteurize milk and the expense is small.
Improvised apparatus may be used, but it requires much more labor and is not as satisfactory.
All milk should be sterilized or pasteurized before being used as a food for infants.
The following table shows an analysis of milks and infant foods helpful in the selection of a food to supply deficiencies indicated by a chemical analysis of the infant.
COMPARATIVE ANALYSIS OF MILKS AND INFANT FOODS (COMPILED)
(Percentage of Composition of the Dry Substance)
| COMPONENTS | Mother’s Milk | Cow’s Milk | Borden’s Malted Milk | Horlick’s Malted Milk | Borden’s Condensed Milk (Eagle Brand) | Nestle’s Food (Milk Substitute) | Mellin’s Food (Milk Modifier) | Eskay’s Food (Milk Modifier) |
| Protein | 14.00 | 27.00 | 15.10 | 13.83 | 10.10 | 12.40 | 12.10 | 6.82 |
| Fat | 31.00 | 31.00 | 9.20 | 7.90 | 12.10 | 4.15 | 0.25 | 3.58 |
| Cane-Sugar | None | None | None | None | 59.1 | 22.10 | None | None |
| Other Soluble Carbohydrates (Lactose, Maltose, etc.) | 52.00[18] | 36.00[18] | 69.77[19] | 66.56[19] | 16.0[18] | 35.00[19] | 84.00[19] | 56.78[20] |
| Starch | None | None | None | None | None | 25.70 | None | 30.42 |
| Ash (Mineral Content) | 2.00 | 5.00 | 3.46 | 3.42 | 2.4 | 1.62 | 3.78 | 1.00 |