Milk and Other Dairy Products : Part 4

Maintaining Health
by R. L. Alsaker

(Page 21 of 36)

If we can't get good milk we can do without it, for it is not a necessary food, but we can get good milk if we make the effort. If the milk is filthy, boiling or pasteurizing does not remove the dirt. Gauthier says of pasteurization: "Sometimes it is heated up to 70 degrees (Centigrade) with pressure of carbonic acid. But even in this case pasteurization does not destroy all germs, particularly those of tuberculosis, peptonizing bacteria of cowdung, and the dust of houses and streets, etc."

Even boiling does not kill the spores of bacteria unless it is continued until the milk is rendered entirely unfit for food. To kill these spores it is necessary to boil the milk several times. The spores are small round or oval bodies which form within the bacterial envelope when these micro-organisms are subjected to unfavorable conditions. The spores resist heat and cold that would kill almost any other form of life. When conditions are favorable they develop into bacteria again.

After heating, the cream does not rise so quickly nor does it separate so completely as it does in natural milk. This is due to the toughening of the casein in the milk.

Heating partly disorganizes the delicately balanced salts contained in the milk. The result is that they can not be utilized so easily and completely by the body, for the human organism demands its food in an organic state, that is, in the condition built up by vegetation or by animals. We may consume iron filings and remain anemic, in fact, the effect the iron medication has is to ruin the teeth, digestive organs and other parts of the body as a consequence. But if we partake of such foods as apples, cabbage, lettuce and spinach, the necessary salt is taken into the blood.

Heating milk also makes it constipating. True, normal people can take boiled milk without becoming constipated, but how many normal people are there? We are sorely enough afflicted in this way now. Let us have a supply of natural milk or go without it. It is not my desire to convey the impression that it does any harm to scald or boil milk occasionally, but if done daily it does harm, especially to the young. Scalded milk has its proper place in dietetics. Occasionally we find a person who has persistent chronic diarrhea. If he is in condition to eat anything, this annoying affliction is usually overcome in a reasonable time if the patient will take boiled or scalded milk in moderation three times a day, and nothing else except water.

How are we to obtain good milk? We can do it by using common sense, care and cleanliness.

It is well to remember that there are bacteria in all ordinary milk, and that if the milk is from healthy cows and is kept clean and cold these bacteria are harmless. Most of them are the lactic acid bacteria, which change the milk sugar into acid. When the milk has attained a certain degree of acidity, the lactic acid bacteria are unable to thrive and the souring process is slowed up and finally stopped. Most of the other bacteria in milk perish when lactic acid is formed. This is why stale sweet milk is often harmful, when the same kind of milk allowed to sour can be taken with impunity.

If the milk is kept in a cold place the bacteria multiply slowly. If it is kept in a warm place they increase in numbers at a rate that is marvelous, and consequently the milk sours much sooner. Even if the milk is kept cold, bacterial growth will soon take place, but it will perhaps not be lactic acid bacteria. It may be a form that causes the milk to become ropy and slimy or one that gives it a bad odor.

Bacteria are like other forms of vegetation, such as grass, weeds, flowers and trees, in that some flourish best under one condition and others under dissimilar conditions, and they struggle one against the other for subsistence and existence. Like flowers there are thousands of different forms of bacteria and they vary according to their food and environment.

Peculiar odors in milk generally come from certain kinds of food given to the cows, such as turnips; from bacterial action; or from flavors absorbed from other foods or from odors in the air. Milk should not be exposed to odorous substances, for it becomes tainted very quickly. Sometimes yeast finds its way into milk and causes decomposition of the sugar with the formation of carbon dioxide and alcohol.

A count of the bacteria in milk often serves a good purpose, for it shows whether it is good and has had proper care. The consumers have a right to demand milk low in bacteria, for if no preservatives have been used, that means clean milk. If we could live in our pristine state of beatific bliss, if such it was, we would not have to use milk after childhood is past, but our present condition demands the use of easily digested foods and to many milk is almost a necessity.

The milk in the udder of a healthy cow is almost surely free from bacteria, but the moment it is exposed to the air these little beings start to drop into the fluid.

The bacterial standards given by various city health departments vary. Those who are mathematically inclined may find the following figures interesting: In some great cities they allow 500,000 bacteria to the cubic centimeter of milk. A cubic centimeter contains about twenty-five drops. In other words, they allow 20,000 bacteria per drop. This may seem very lively milk, but these bacteria are so small that about 25,000 of them laid end to end measure only about an inch, and it would take 17,000,000,000,000 of them to weigh an ounce, according to estimates. These are the tiny vegetables we hear and read so much about, that we are warned against and fear so much. Truly the pygmies are having their innings and making cowards of men. The bacteria multiply by the simple process of growing longer and splitting into two, fission, as it is called, and the process is so rapid that within an hour or two after being formed a bacterium may be raising a family of its own.