There is a popular saying now called
" people have to be middle-aged, soak wolfberry in a thermos cup "
Under this health craze, many people start to put various "health drinks" in the thermos cup
But do you know
If some drinks are put in the thermos cup and drink them for a long time
Not only can they not maintain health, but they will also harm the body!
Some people think that the thermos cup has a good insulation effect, so they put everything they want to drink in it so that they can drink it anytime and anywhere. In fact, however, not all liquids are suitable for storage in thermos.
. Keep these
. Drinking them frequently is harmful to the body.
1. Acid drinks (such as lemon juice)
. The insulation principle of the thermos cup is generally vacuum plus stainless steel . This can reduce heat transfer as much as possible to achieve the purpose of insulation. Therefore, the inner liner of the thermos cup is mostly made of stainless steel.
stainless steel is resistant to high temperatures and is not easy to deform, but is afraid of strong acid . There are more acidic substances in beverages such as lemon juice and sour plum soup, which can easily cause damage to the stainless steel inner liner, resulting in poor insulation performance.
If the thermos cup itself is not of good quality, it may even lead to the precipitation of some of the heavy metal substances, causing great damage to the human body.
Tips
In fact, honey is also weakly acidic . If honey water is stored in a thermos cup, it will also react with the metal in the inner liner. After drinking it, it may cause symptoms such as diarrhea, nausea, vomiting .
2. Carbonated Drink
Carbonated Drink is undoubtedly one of the favorite drinks of modern young people, but it is not suitable for filling in thermos.
First of all, carbonated beverages have certain corrosiveness . If stainless steel comes into contact with it for a long time, it is likely to be eroded and some toxic and harmful substances are precipitated, which will endanger health after consumption.
Furthermore, the thermos cup is usually carried with you and will inevitably shake up and down. During the shaking process, the gas in the carbonated beverage can easily escape from , and the air pressure in the bottle increases, which can easily lead to problems such as difficulty in opening by the bottle plug or the beverage sprays when the lid is opened.
3. Milk and dairy products
Anhui Agricultural University once conducted an experiment: they heated milk powder to 60℃ respectively, and then stored it in a thermos cup to detect bacteria every 2 hours.
The results found that these three milks had a large number of bacteria that proliferated after for 212 hours, all exceeding the safe drinking standards. And this is an ideal environment in the laboratory. If it is in an ordinary environment, the bacteria will reproduce faster. If a person drinks this type of milk, it is easy to cause diarrhea, abdominal pain and other diseases.
In addition, after the milk is heated at high temperature, the nutrients such as vitamins in it will be damaged by . At the same time, the acidic substances of will also undergo chemical reaction with the inner liner of the thermos cup , which is harmful to health when drinking it regularly.
Tips
In addition to milk, soy milk, soy milk and other protein-rich drinks are heated and stored in a thermos cup, which is also prone to spoilage and spoilage. Therefore, if you put these drinks in a thermos, it is best to finish drinking them in 1~2 hours.
4. Tea
Another experiment from Anhui Agricultural University proves that if tea is brewed in a thermos cup, the tea leaves will be stewed at high temperature for a long time, many of the nutrients in it such as vitamin C, flavonols, tannin acid, theophylline, etc. will be damaged to varying degrees, and the nutritional value of is greatly reduced.
That is to say, making tea with a thermos cup will cause the tea to lose its original fragrance and nutrition. Moreover, if you soak in the thermos for too long, the tea may also release heavy metal substance , which is not good for health; the inner wall of the thermos will also change color due to long-term contact with the tea soup.
5. Traditional Chinese Medicine
Whether it is Chinese Medicine Tea , Chinese medicine preparations or Chinese herbal medicines, they are not suitable for drinking in thermos cups.Because the decocted Chinese medicine generally dissolves a large amount of acidic substance , which is very easy to react chemically with the inner wall of the thermos cup and dissolve into the decoction, which not only affects the efficacy of the medicine, but also causes harm to the human body.
Some people put Chinese medicine in a thermos cup to prevent it from spoiling. But in fact, Chinese medicine can be stored in at room temperature of 25℃ for 2 days; instead, it is stored in a thermos cup, which is easy to deteriorate due to the high temperature.
6. Salt-containing beverages (such as salt water)
To ensure the safety of drinking water, the inner vessel of the thermos cup is mostly treated with sandblasting and electrolysis . However, salt contains a certain amount of corrosiveness, just like acid, it will damage the stainless steel inner liner , so salt-containing beverages such as salt water should not be stored in it for a long time.
Have your thermos
really washed?
In addition to paying attention to what kind of drinks it contains, the biggest health hazard of thermos is that bacteria breed . Since the inner liner of the thermos cup is generally deeper and there are many hygienic dead corners of , such as bottle cap gaps, etc., it is very likely that a large number of bacteria are hiding in it.
Moreover, hands, mouth, etc. often come into contact with the opening and closing valves, cup mouth, etc., and warm drinks are stored in the cup for a long time and the temperature is appropriate, the risk of bacterial proliferation is even greater.
If you want to solve this health hazard, the best way is to "clean carefully". Generally speaking, the thermos should be thoroughly cleaned once a day, so how should it be washed?
1, Clean the inner liner to remove the odor
Put a small handful of baking soda in the thermos cup, then add hot water dilute, cover the cup lid, shake thoroughly. After pouring it out, wash the inner liner with a softer cleaning utensil such as sponge and rinse it with clean water.
2, Clean the gap of the bottle cap
Remove the cup cover, squeeze toothpaste on a clean toothbrush, gently brush each gap of the bottle cap, and then rinse it with clean water.
3, Clean the entire cup
Rinse the inside and outside of the cup with clean water one to two times.
4, dry water stains
Use force to shake out the remaining water in the cup and wipe the cup with a kitchen towel or a clean rag. Place the lid and body of the cup in a ventilated and cool place respectively to dry, and wait until is completely dried before covering the lid of the cup .
thermos cups are directly in contact with food, so it is best to choose products produced by regular manufacturers, with relatively guaranteed quality. Fill the thermos cup with boiling water, then tighten the lid, touch the cup body after 2 to 3 minutes. If you feel hot, it means that the insulation performance is not good. If water seeps in the thermos cup filled with water for a few minutes, it means that the sealing performance is not good.
Source: JSBC Wanjia Lights
[Editor: Li Xing]
