Home Uncategorized After opening the milk, put it at 25 degrees one night. Can you drink it the next day?

After opening the milk, put it at 25 degrees one night. Can you drink it the next day?

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No, it may have gone bad. Milk is rich in nutrition and high in water content, which also provides good conditions for the growth of microorganisms. It is recommended to drink the milk at one time after it is opened, and do not place it again

if you can’t finish drinking, the bottled or boxed milk should be covered and then put into the refrigerator below 6 ℃; The bagged “Tetra Pak pillow” milk should be operated according to the principle of “three fold for sealing and one fold for drinking”. The specific method is to bend the opening of the package three times, then clamp it with a small clip or paper clip, put it vertically into the refrigerator for refrigeration, and try to drink it up within 24 hours

when drinking next time, cut off the first fold with clean scissors, and then pour out the milk, which can effectively prevent the milk from being polluted by bacteria at the opening of the packaging. If you haven’t finished the second time, repeat this method. Before drinking, heat according to the principle of “stirring while boiling and turning off the fire when bubbling”, which can not only achieve the effect of sterilization, but also avoid the loss of vitamins and other nutrients in milk

extended data:

methods to identify whether milk has deteriorated

1. Sensory identification. Fresh milk (sterilized milk) is milky white or slightly yellowish, with the inherent fragrance of fresh milk, no peculiar smell, uniform fluid, no precipitation, no condensation, no impurities, no foreign matters and no viscosity

2. Drop the milk into clear water. If it cannot melt, it is fresh milk; If it melts, it’s not fresh milk. If the milk is bottled, it is not fresh milk as long as the thinning phenomenon is observed on the upper part of the milk or there is precipitation at the bottom of the bottle

3. Boiling test method. Take about 10ml of milk sample into the test tube (or transparent glass) and place it in boiling water for 5 minutes. If there is condensation or flocculent matter, it means that the milk is not fresh or has deteriorated

4. Good milk, no cup. The bought milk (which has not been boiled or heated in the microwave oven) is quickly poured into a clean transparent glass, and then the glass is slowly tilted. If there is a thin milk film left on the inner wall of the glass without hanging the glass, it is easy to wash down with water, that is, the raw material is fresh milk. Such milk is sent to the processing plant in a short time, and the total number of bacteria is very low. If the milk film on the glass is uneven, and even small particles visible to the naked eye hang on the glass wall and are not easy to clean, it means that the milk is not fresh enough

reference: renmin.com – how to distinguish whether milk has gone bad? Tips for milk storage

People’s Network – four groups let you drink the right milk. Store it below 6 ℃ for no more than 24 hours after opening

you can’t drink in this case

the best storage temperature of fresh milk after opening is 2 ~ 8 degrees. Generally, it can be stored for 2 ~ 3 days. It is best to drink during this period. It can be stored at room temperature of 15 ℃ for 24 hours; It can be stored for 10 hours at room temperature of 19-22 ℃; It can be stored at room temperature of 25 ℃ for 6 hours; Storage in refrigerator: it can be stored at 0-4 ℃ for 8 days

expansion materials

wax paper or wax impregnated paperboard cover is widely used in China, and its effect is not as good as aluminum foil cover. Fresh milk can also be packaged in composite cartons, such as “Tetra” “and” purepak “developed in Sweden. This kind of packaging is carried out on the forming filling sealing packaging machine, and the equipment is relatively expensive. The practical production and application experience shows that this kind of packaging is feasible both in terms of protection and convenience functions and in terms of exhibition and marketing, but the packaging cost is higher than that of glass bottle packaging. However, due to the recycling of glass bottle packaging, it is also necessary to increase the investment in bottle washing machines and other equipment, while carton packaging belongs to one-time use. In order to reduce the packaging cost, plastic bags are also used for fresh milk consumed in short-term circulation. For example, the simplest packaging material is polyethylene film with titanium dioxide white pigment. Of course, the more perfect flexible packaging material is the “self-supporting bag” made of aluminum foil and plastic film. Fresh milk packaging in European and American countries has evolved repeatedly. No matter what form of packaging, it should aim at and meet the protection requirements of fresh milk and the degree acceptable to consumers

glass bottle packaging has the advantages of easy cleaning, transparency and hardness, but its weight, fragility and ultraviolet light transmission are its disadvantages. Glass bottles are suitable for aseptic packaging, but they are not suitable for the packaging of fresh milk stored for a long time. Therefore, the packaging of fresh milk is an important issue. The glass bottle is transparent. Sunlight (mainly ultraviolet light) will destroy riboflavin (vitamin B2) and vitamin C in fresh milk, and promote the oxidative rancidity of fat and protein decomposition. Although the brown glass bottle can block the transmission of ultraviolet light, which once aroused people’s interest, it was later found that the fresh milk packaged in the brown glass bottle is more likely to be sour than the fresh milk packaged in the colorless glass bottle, so the brown glass bottle has not been popularized and applied. 1.4 aseptic fresh milk is processed commercially by homogenizing the fresh milk at about 66 ℃ and filling it in a narrow mouth bottle. The remaining space in the bottle (i.e. from the liquid level of milk to the bottle cap) is about 8cm high. After sealing the bottle, heat the bottle and milk to 105 ℃ ~ 110 ℃ for 20 ~ 40 minutes

reference materials: Baidu Encyclopedia – fresh milk

you can’t drink milk the next day after you open your mouth. You’d better finish it at that time. Milk has a high protein content, which can deteriorate and hurt the body and easily cause diarrhea

pay attention to the following points when saving milk:

1& nbsp; Fresh milk should be placed in a cool place immediately, preferably in the refrigerator

2.& nbsp; Do not expose milk to the sun or light. Sunlight and light will destroy several vitamins in milk and lose its aroma

3.& nbsp; The cap of the bottle should be well covered to prevent him from putting a smell into the milk

4.& nbsp; Pour milk into cups, teapots and other containers. If it is not finished, cover it and put it back into the refrigerator. Do not pour back the original bottle

5.& nbsp; Supercooling also has adverse effects on milk. When frozen, the quality of milk will be damaged. Therefore, milk should not be frozen. Just put it in the refrigerator for refrigeration

expanded data

milk is one of the oldest natural drinks, known as “white blood”, and its importance to human body can be imagined. As the name suggests, milk is squeezed from female cows. In different countries, milk is also divided into different grades

milk is rich in minerals, calcium, phosphorus, iron, zinc, copper, manganese and molybdenum. The most rare thing is that milk is the best source of calcium for human body, and the proportion of calcium and phosphorus is very appropriate, which is conducive to the absorption of calcium. The species are complex, with at least more than 100 kinds. The main components are water, fat, phospholipids, protein, lactose, inorganic salts, etc

there are 20 kinds of amino acids that make up human protein, of which 8 kinds cannot be synthesized by the human body itsel
f (9 kinds for infants, and histidine is more than adults). These amino acids are called essential amino acids. If the protein we eat contains all the essential amino acids, this protein is called whole protein. The protein in milk is the whole protein

effect of diet therapy:

1. Milk tastes sweet, flat and slightly cold, and enters the heart, lung and stomach channels

2. It has the effect of tonifying deficiency, benefiting the lung and stomach, generating fluid and moistening the intestines

3. It is used for chronic physical deficiency, lack of Qi and blood, malnutrition, choking diaphragm nausea, gastric and duodenal ulcer, thirst and constipation

reference: Baidu Encyclopedia – milk

if you can’t drink it, the best temperature for fresh milk preservation after opening is 2 ~ 8 degrees. Generally, it can be stored for 2 ~ 3 days. It’s best to drink it during this period. Expired pure milk will make you upset if you drink it, because the protein intelligence in it has been destroyed and is harmful to human body. Milk with a long time will grow bacteria. If you have drunk it carelessly, you will be fine if you don’t feel the same. If you feel uncomfortable, it is recommended to see a doctor quickly

expand data:

sensory identification. Fresh milk (sterilized milk) is milky white or slightly yellowish, with the inherent fragrance of fresh milk, no peculiar smell, uniform fluid, no precipitation, no condensation, no impurities, no foreign matters and no viscosity

drop the milk into clear water. If it cannot melt, it is fresh milk; If it melts, it’s not fresh milk. If the milk is bottled, it is not fresh milk as long as the thinning phenomenon is observed on the upper part of the milk or there is precipitation at the bottom of the bottle

boiling test method. Take about 10ml of milk sample into the test tube (or transparent glass) and place it in boiling water for 5 minutes. If there is condensation or flocculent matter, it means that the milk is not fresh or has deteriorated

1. Milk has its storage conditions when its packaging is intact, that is, how long it will be kept at what temperature. Generally, yogurt is stored at 0-4 degrees for 7-31 days (different time may be due to different packaging), and normal temperature milk is stored at room temperature for 30-240 days (Baili bag for 30 days, Tetra Pak pillow for 45 days, Tetra Pak bag for 6-8 months)
2. Milk and dairy products are a kind of nutritious food and an excellent natural medium for all kinds of micro organisms. If fresh milk pollutes microorganisms or dairy products pollute microorganisms in the production process, these microorganisms will reproduce rapidly under appropriate conditions, affecting the quality of dairy products. Microorganisms produce various metabolites in the metabolic process, causing deterioration of milk and dairy products or food poisoning
3. Generally, milk should be drunk immediately after opening. The longer the storage time and the higher the temperature, the greater the chance of contamination. Due to different milk and temperatures, there is no specific standard for how long it can be stored without deterioration after opening
4. After opening the milk, you can’t drink yogurt or normal temperature milk one night at 25 degrees Celsius. It has been polluted. After drinking, it may cause food poisoning, vomiting and diarrhea. There is no adverse reaction after drinking, which can only prove that the person’s intestines and stomach are good
5. I have handled such incidents many times. I hope the answer will be helpful to you.

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