When milk is heated for an hour to 212 degrees F. (sterilization), is it injured in any way? It is rendered harder to digest, and is more constipating; scurvy may be caused if it is used as the sole food for a long time. It is so objectionable that the method is not recommended for general use.
When should I heat it 212 degrees F.? For use on long journeys of days traveling. Then you should heat for one hour upon two successive days, leaving the cotton stoppers in the bottles.
Does heating milk to 155 degrees F. for one-half hour injure it in any way? It does not affect the taste or make it more constipating. The unfavorable effects, if any, are slight. Get clean and fresh milk and the effects will be really of no account.
What pasteurizer would you recommend. Freeman's or Walker-Gordon.
What shall I do with the milk after it has been pasteurized? Cool it quickly by placing the bottles in cold water—never leave them in the room where pasteurized, and never place them, when warm, in an ice chest.
Why this caution? Because it requires from two to four hours to cool them in the air, or in the ice box, and during that time a good many undeveloped germs may mature and injure the keeping properties of the milk. You can cool the bottles of milk in cool water in from ten to twenty minutes if you change the water frequently, or if ice is put into the water.
What is modified milk of the laboratories? It is milk containing fat, sugar, proteids, etc., in definite proportions put up, usually, according to a physician's directions.
PEPTONIZED MILK.
What is peptonized milk? Milk that has been partially digested.
What part of the milk has been digested? The proteids (curd).