As the saying goes: “There are three treasures for middle-aged people, the thermos cup with wolfberry and jujube.” After the beginning of winter, the temperature “falls off a cliff”, and the thermos cup has become the standard equipment for many middle-aged people.
But friends who like to drink like this should pay attention, because if you are not careful, the thermos in your hand may turn into a “bomb”!
In August 2020, a girl in Fuzhou soaked red dates in a thermos cup but forgot to drink it. Ten days later, when she unscrewed the thermos cup, an “explosion” occurred, and the lid of the cup bounced off, causing the girl’s right eye to rupture;
In January 2021, Ms. Yang from Mianyang, Sichuan was preparing to eat when the thermos cup soaked with goji berries on the table suddenly exploded, blowing a hole in the ceiling…
Why does a good thermos cup explode after soaking red dates and goji berries? Which drinks are not suitable for putting in a thermos cup? How should we choose a qualified and healthy thermos cup? Today, I will talk to you about the “insulation mug”.
01 Soak red dates and wolfberries in a thermos cup,
Why did it cause an explosion?
1. Explosion of the thermos cup: it is mostly caused by microorganisms
In fact, the explosion occurred when the thermos cup soaked red dates and wolfberries, which was caused by excessive microbial fermentation and gas production.
There are many hygienic blind spots in our thermos cups. For example, there may be a lot of bacteria hidden in the liner and the gaps in the bottle caps; while dried fruits such as red dates and wolfberries are rich in nutrients, and the sugars and other components in them are dissolved after soaking in water, which is easier used by microorganisms.
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Therefore, in an environment with suitable temperature and sufficient nutrients, these microorganisms will ferment and produce a large amount of carbon dioxide and other gases, and the longer the time, the more gas will be produced; the air pressure in the airtight thermos cup will continue to increase. It may cause hot water to gush out and cause an “explosion” to injure people.
2. In addition to red dates and wolfberries, these foods also have the risk of explosion
After the above analysis, we can know that the food that is rich in nutrients and suitable for microbial reproduction is an important factor that causes the explosion if it is placed in the thermos cup for a long time. Therefore, in addition to red dates and wolfberry, longan, white fungus, fruit juice, milk tea and other high-sugar and high-nutrition foods, it is best to drink them immediately instead of keeping them in a thermos for a long time.
In addition, when drugs such as effervescent tablets come into contact with water, they will release a large amount of carbon dioxide quickly, and carbonated drinks themselves contain a lot of gas. This kind of food will cause the air pressure in the cup to increase. If it is shaken, it may cause the cup to burst, so it is best not to use a thermos cup for brewing or storage.
(1) When using a cup with good airtightness such as a thermos cup, it is best to preheat it with hot water and pour it out before adding hot water, so as to avoid excessive temperature difference, which will cause a sudden increase in air pressure and cause hot water to “gush”.
(2) No matter what kind of hot drink is brewed in the thermos cup, it should not be kept for a long time; it is best not to unscrew the cup lid all at once before drinking, and the gas can be released by carefully opening and closing the cup lid repeatedly, and the mouth of the cup should not face people when opening , to prevent injury.
02 It is best not to put these drinks in a thermos!
Because the insulation function of the thermos cup is outstanding, and the airtightness is good, many people not only use it to make red dates and goji berries, but also use it to make tea and pack milk and soy milk. Is this possible?
Experts said that although there is no hidden danger of explosion in these two types of drinks in thermos cups, it may affect the nutrition and taste of the drinks, and even shorten the service life of the thermos cups!
1. Making tea in a thermos cup: loss of nutrients
Tea contains nutrients such as tea polyphenols, tea polysaccharides, and caffeine, which have strong health care effects. When hot water is used to make tea in a teapot or an ordinary glass, the active substances and flavor substances in the tea will dissolve quickly, making the tea fragrant and sweet.
However, if you use a thermos cup to make tea, it is equivalent to continuously decocting tea leaves with high-temperature water, which will destroy the active substances and aromatic substances in the tea leaves due to overheating, resulting in nutrient loss, thick tea soup, dark color, and bitter taste.
2. Milk soy milk in a thermos cup: easy to go rancid
High-protein drinks such as milk and soy milk are best stored in a sterilized or low-temperature environment. If it is placed in a thermos cup for a long time after heating, the microorganisms in it will easily multiply, causing milk and soy milk to become rancid, and even produce flocs. After drinking, it is easy to cause abdominal pain, diarrhea and other gastrointestinal symptoms.
In addition, milk contains acidic substances such as lactose, amino acids, and fatty acids. If it is stored in a thermos cup for a long time, it may chemically react with the inner wall of the thermos cup and cause some alloying elements to dissolve.
Suggestion: Try not to use a thermos cup to hold hot milk, soy milk and other drinks, and don’t leave them for too long, preferably within 3 hours.
Post time: Jan-22-2023