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1. Avoid simmering Cooking milk with a simmer will cause the vitamins in the milk to be destroyed by the oxygen in the air, and the boiled milk is easy to overflow, so when the volume of the milk expands, it should be immediately removed from the source, and then put back on the fire to boil, so that it can not only maintain the nutrients in the milk, but also kill the pathogenic microorganisms in the milk. 2. Avoid boiling milk for too long Some people think that it is appropriate to boil milk for another 5 minutes after boiling, but this statement is not comprehensive. This is because the colloidal protein particles in milk can be dehydrated and converted into a gel state at 60.
The calcium phosphate in milk is also unstable and tends to precipitate from acidic to neutral at this temperature. When heated to 100°C, the milk undergoes complex chemical changes, which not only reduces the color, aroma and taste, but also may produce other substances that reduce the nutritional value. At present, most of the milk is scientifically sterilized and closed packaging, can be drunk directly, if you want to drink hot milk can take the method of thermal insulation and heating, put the fresh milk bag in hot water for 5 minutes, so as to retain more nutrients. Satisfied.
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Some people worry that fresh milk will lose nutrients when it is heated, but is this really the case? In fact, milk can certainly be heated in moderation, but there are a few things you should be aware of. Boil the milk over low heat:
It will destroy the vitamins in the milk by oxygen. Boiled milk: Milk is rich in amino acids, at high temperatures, the amino acids and sugar in the milk form fructose-based amino acids, which are not only not digested and absorbed by the human body, but will affect human health, and the colloidal protein particles in the milk will be dehydrated into a gel at 60.
The phosphoric acid in milk precipitates from acidic to neutral at this temperature. Therefore, the heating temperature of milk should not be too high, when heated to 100, the color, aroma and taste of milk are not only reduced, but also the nutritional value is greatly reduced! So, how do you heat milk properly?
In fact, it is most appropriate to use the water insulation heating method. If you use a microwave oven to heat it, be careful not to use it for a long time, because the temperature is high, the nutrients of the milk will still be destroyed, and you should also pay attention to the uneven temperature when using the microwave oven, so you should shake it before drinking it so that it will not be burned. In addition, people who like convenience often choose milk powder, the nutritional content of milk powder is similar to fresh milk, when brewing milk powder, pay attention to the temperature of the water should not exceed 60.
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No, fresh milk usually needs to be refrigerated, hence the name, if you want to drink hot milk, you need to use regular milk.
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Fresh milk can be heated and drunk, but drinking it this way will reduce the nutritional value of the milk. When it comes to milk heating, some friends may say that heating can also sterilize and disinfect and ensure safety. In most cases, this is not true.
Heating is indeed an effective method of milk sterilization, but usually we drink milk either directly from the manufacturer, or go to the supermarket to buy, and finally drink packaged milk, mainly including UHT milk or pasteurized milk. This kind of milk has taken strict sterilization and disinfection measures before leaving the factory, coupled with the vacuum packaging process, there is no need to worry about safety during the shelf life, and you can drink it directly after opening.
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Fresh milk can be served hot, but do not use it too hot, as it may result in the loss of nutrients.
Fresh milk, also known as pure milk, is a milky white or yellowish uniform colloidal fluid, with no precipitation, no clots, no impurities, no starch, and no peculiar smell.
Pasteurization is one of the disinfection methods. The general shelf life of milk is three days, and if you open it and don't drink it, you should put it in the refrigerator to keep it fresh.
But don't boil the milk too hot, generally heat it to 80%, otherwise the nutrients will be lost.
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It can definitely be heated, like when it is very cold in winter, it should be heated, so that you can drink it to warm your stomach, and you can't stand it when you drink it cold.
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Heat over water. Fresh milk contains a lot of protein, fat and lactose, and heating it with water can avoid overheating, so as not to destroy the nutritional value of fresh milk. Method:
Wash the cup, dry it and pour in the milk, put the cup with the milk in hot water, soak for about 5 minutes, and the milk is warm and ready to drink. Milk is nutritious, containing a variety of vitamins, minerals, and a variety of amino acids needed by the human body. <
Heat over water. Fresh milk contains a lot of protein, fat and lactose, and heating it with water can avoid overheating, so as not to destroy the nutritional value of fresh milk. Method:
Wash the cup, dry it and pour in the milk, put the cup with the milk in hot water, soak for about 5 minutes, and the milk is warm and ready to drink. Milk nutrition is rich in nutrients, contains a variety of vitamins, minerals, and also contains a variety of amino acids required by the human body, long-term high temperature heating will destroy the active substances contained in the milk, and may also become a coagulated Chang liquid, generally speaking, pour fresh milk into the cup, soak in hot water for 5 10 minutes.
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OK.
Fresh milk can be warmed and drunk, and drinking a glass of milk before going to bed is good for sleep. Fresh milk is well preserved in nutrients, and most of the common milk in supermarkets is long-acting milk, which is sterilized by ultra-high temperature sterilization. You can boil the milk for a while, but if the cooking time is too long, the nutrients in it will also be destroyed.
Precautions for heating milkWhen heating the milk, try to keep it as short as possible and the temperature should not be too high. Generally, the milk is blanched in hot water at about 80 degrees Celsius for about 1 minute. The first can not be packed, boiled in boiling water.
When many people heat milk, in order to save trouble, they directly sell the milk in bags or boxes and boil it in boiling water. In fact, this is wrong.
The temperature of the boiling water is continuously maintained at around 100 degrees. At high temperatures, the nutrients in the milk will change, resulting in the loss of nutrients, whether it is bagged milk or carton milk, the packaging is not resistant to high temperatures. Under continuous high temperatures, milk cartons or pouches will decompose, decomposing some substances that are harmful to the body and affecting the health of the body.
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If you buy processed fresh milk and drink it for the first time, there is no need to cook it.
Because the fresh milk produced by dairy enterprises has undergone strict sterilization treatment, its strict packaging can ensure that the microbial indicators, nutritional indicators and sensory indicators of the product during the shelf life meet the relevant national standards. Therefore, this milk can be drunk directly, but after cooking, it will cause a loss of nutrients in it.
If you don't drink milk all at once, you have to boil it the next time you drink it.
Because the milk is mixed with bacterial air after opening, and it is difficult to seal, even in the refrigerator, there will be bacterial contamination, and drinking it directly may cause diarrhea and other problems. It is important to follow the principle of "stirring while boiling, and turn off the heat when bubbling" when boiling milk. Because milk is a highly nutritious food, it contains fat and other ingredients that can easily be muddy, and proper stirring can avoid this phenomenon.
It is also important to control the heat when boiling milk, as long as the milk is hot enough to bubble and about to boil, you can turn off the heat, which can not only have a sterilization effect, but also avoid the loss of vitamins and other nutrients in the milk.
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It is okay to drink pure milk with water, it is best to heat pure milk and then add hot water to drink it, which will be safer.