Raw milk: it is fresh milk that has just been squeezed out. It can be drunk after being boiled. Raw milk is rich in immunoglobulin, which can effectively resist viruses and supplement calcium necessary for growth and development. It is suitable for growing children, teenagers and the elderly.
Skim milk powder: it is made by removing the fat from milk by high-speed centrifuge, then concentrating and spray drying. The production of 1 kg skim milk powder requires ordinary milk12kg. The fat content of this product is generally not more than 2.0%, and that of protein is not less than 32%. Skim milk powder is mainly used as raw materials for processing other foods or for consumers with special nutritional needs.
Extended data:
Yogurt is a kind of milk product which takes milk as raw material, adds beneficial bacteria (starter) to milk after pasteurization, ferments, and then cools and fills.
The function of yogurt:
(1) Maintain the ecological balance of intestinal flora, form a biological barrier, and inhibit the invasion of harmful bacteria into the intestine.
(2) To prevent constipation by producing a large number of short-chain fatty acids to promote intestinal peristalsis and a large number of bacteria to grow and change osmotic pressure.
(3) Yogurt contains a variety of enzymes, which can effectively promote the digestion and absorption of nutrients.
(4) Yogurt can prevent the liver and brain from being harmed by these toxins by inhibiting the growth of saprophytic bacteria in the intestine and inhibiting the food spoilage in the intestine to produce toxins.
(5) Yogurt can inhibit the growth of saprophytic bacteria and some harmful bacteria in the intestine. So as to inhibit carcinogenic factors produced by these bacteria and achieve the purpose of preventing cancer.
(6) Improve human immune function. Lactic acid bacteria can produce some substances that enhance immune function, which can improve human immunity and prevent diseases. Yogurt containing a large number of active bacteria can help improve lactose intolerance, constipation, diarrhea, enteritis, helicobacter pylori infection and other diseases.
(7) The Human Nutrition Research Center of the U.S. Department of Agriculture is conducting research on the elderly at Tufts University. Researcher Gene Mayer said that yogurt can not only improve the intestinal environment, but also improve the body's immunity.
Coincidentally, a study in Taiwan Province also found that yogurt can improve the therapeutic effect of some anti-inflammatory drugs.
(8) Yogurt can lower blood pressure. Dr. Alvaro A Liang, an epidemiological researcher at Harvard University School of Public Health, said that the study found that among those who drink 2-3 servings or more of yogurt every day, the risk of hypertension is reduced by 50% compared with those who don't drink it.
At present, most yogurt products on the market are solidified, stirred and fruity with various fruit juices and jams.
Yogurt not only retains all the advantages of milk, but also develops its strengths and avoids its weaknesses in some aspects during processing, making it a more suitable nutritional health care product for human beings. 20 18 September, the world's top scientific journal Cell published an article saying that two new studies show that taking probiotics is not only not good, but also harmful to human body.
References:
Baidu encyclopedia-yoghourt