Yogurt is a kind of fermented milk. Fermented milk is a comprehensive name for a class of dairy products, including yogurt, kefir, fermented buttermilk, sour cream, milk wine (mainly horse milk) and so on.

1, the production process is different:

(1) Yogurt is a fermented dairy product with Lactobacillus bulgaricus and Streptococcus thermophilus as the main strains. These two kinds of bacteria come from the natural fermentation broth of milk, and they are not their own biological flora in the human intestine, so they cannot live and colonize in the human intestine.

(2) Fermented milk is a variety of dairy products fermented by non-Bulgarian Lactobacillus (which can undergo enzymolysis). There are mainly yogurt, active milk, cheese and sour cream. Fermented milk containing a large number of beneficial active bacteria is one of the ideal foods for modern human beings with both nutrition and health care functions.

Fermented milk has a very long history. The early production is made by boiling the milk of domesticated animals (cows, sheep, goats, buffaloes and camels), cooling it to 40 degrees and naturally fermenting it.

2, the function is different:

(1) Yogurt has many benefits for human body: it can decompose lactose and protein in milk, making it easier for human body to digest and absorb; Yogurt can promote the secretion of gastric juice, increase appetite and strengthen digestion. Lactic acid bacteria can reduce the production of some carcinogens, so it has anti-cancer effect; It has the function of lowering cholesterol, and is especially suitable for people with hyperlipidemia. Prevent constipation; Enhance human immune function.

(2) Fermented dairy products have the following functions: inhibiting the growth and reproduction of spoilage bacteria in intestinal tract, and preventing and treating constipation and bacterial diarrhea; Promote gastrointestinal peristalsis and gastric juice secretion, and patients with gastric acid deficiency should drink fermented milk in moderation every day, which is conducive to restoring health; Can overcome lactose intolerance; Lowering cholesterol can prevent the elderly from suffering from cardiovascular diseases; Drinking fermented milk also has a certain effect on preventing and treating diabetes and liver disease.

Extended data

Precautions for drinking yogurt:

1, yogurt should not be heated. Once yogurt is heated, a large number of active lactic acid bacteria will be killed, which not only loses its most important nutritional value and health care function, but also changes the physical properties of yogurt, forms precipitation, and the unique taste and taste disappear. Therefore, drinking yogurt can't be heated, so it should be bought and drunk in summer, and it can be placed at room temperature for a certain period of time before drinking in winter.

2, don't drink yogurt on an empty stomach, drink it about 2 hours after meals. The PH value suitable for the growth of lactic acid bacteria is above 5.4, and the PH value of fasting gastric juice is below 2. If you drink yogurt, lactic acid bacteria will be easily killed and the health care function will be weakened. The gastric juice is diluted after meals, and the PH value only rises to 3-5.

3, should not be taken with antibiotics. Antibiotics and sulfonamides such as chloramphenicol and erythromycin can kill or destroy lactic acid bacteria in yogurt, making it lose its health care function. However, this does not affect the content of nutrients in yogurt and digestion and absorption.

4. Rinse your mouth in time after drinking. With the development of yogurt and lactic acid series drinks, the rate of dental caries in children is also increasing, which is related to the corrosive effect of lactic acid on teeth. Therefore, rinse your mouth in time after drinking yogurt, or it is best to use a straw to reduce the chance of lactic acid contacting your teeth.

5. Yogurt needs to be refrigerated. Yogurt needs to be refrigerated at 4℃. During storage, the acidity will continue to increase, which will make the yogurt more sour. If the storage conditions are good, the yogurt will not go bad, otherwise it will grow bacteria, yeast or Bacillus, which will make it deteriorate. Such yogurt is inedible. When you buy yogurt in hot summer, you must see if the milk seller has a freezer, otherwise it will be difficult to guarantee the quality of yogurt.

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