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Desiccant. It refers to substances that can remove water from moist substances, and is often divided into two categories: chemical desiccant, such as calcium sulfate.
and calcium chloride, etc., which are dried by combining with water to form hydrates; Physical desiccants, such as silica gel and activated alumina, are dried by physical adsorption of water.
The control of moisture is closely related to the yield of the product. In the case of food, under proper temperature and humidity, bacteria and moulds in food can multiply at an alarming rate, causing spoilage, moisture and discoloration. Electronic products can also cause metal oxidation due to excessive humidity, resulting in defective products.
The use of desiccant is to avoid the occurrence of defective products caused by excess moisture.
The following two situations will occur in the desiccant discharge: 1. Silica gel desiccant is a neutral substance, which is relatively stable in nature, has no obvious reaction in water, and is insoluble in water. When placed in water, some heat is released due to the absorption of water.
2. Quicklime.
Desiccant, also known as calcium oxide.
Calcium oxide releases a large amount of heat when it comes into contact with water, causing the water to turn into water vapor.
Occurs randomly**.
3. The mineral desiccant contains diatomaceous earth.
Montmorillonite and other components belong to the porous mineral silicate.
The surface area is relatively large, and it has the function of adsorption of water, so it plays a role in drying. This desiccant itself is chemically stable, and when placed in water, it will slowly absorb water, and the heat release will not be violent.
The food and the desiccant are soaked in water together, and whether the food can be eaten depends on the situation
Silica gel desiccant is non-toxic and harmless to the human body, if accidentally eaten can be discharged with food through the digestive tract, so if the desiccant is silica gel, the soup can be drunk after removing it in time. In addition, for lime desiccant, if the dose is less in the soup and removed in time, it can also be drunk at this time;
Because lime desiccant can react with water, it has a certain corrosiveness to the mucosa of the digestive tract, if the amount of lime desiccant is relatively large or stays in the soup for a long time, it is recommended that the soup at this time can not be drunk, so as not to damage the health.
Therefore, it is recommended to check the type of desiccant before being sure whether it can be drunk to determine whether the desiccant is harmful to the human body, and if it is not possible to judge the time when the desiccant falls into the water, it is not recommended to drink it to prevent the desiccant from corroding the mucosa of the digestive tract.
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Yes, but rinse a few more times and it should be fine.
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Because the desiccant is individually packaged and does not come into close contact with food, it can be placed inside food and will not remain in food.
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Because it comes in a special bag, it is not harmful to the human body, so it can be placed in food. It won't be left inside, just throw the pouch away.
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Because the desiccant is encapsulated, of course it can be placed in the food, it will not remain inside, and there is packaging to isolate it.
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No, the desiccant will be packaged separately and there will be many types of desiccant.
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Because it makes the food fresher and not spoiled, there is wrapping paper on the outside that will not remain in the food, without this kind of thing it will make the food spoil faster and the shelf life is also very short.
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Personally, I think it is to make the food better preserved, and I don't think it will stay in the food, because the packaging of the desiccant is very good, so it will not flow out.
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Because these desiccants have an outer packaging and do not affect the taste of the food, they will be placed in the food and will not remain inside.
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Because these desiccants are packaged with special things, they will not spill. It can also absorb the moisture inside and prevent deterioration.
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The principle of desiccant is that calcium sulfate adsorbs water in the air for drying, and it is placed in food to monitor moisture, so that the food is kept dry to avoid excessive moisture and is not easy to perish; In general food, there will be a reminder that the desiccant is not edible, and the sealing is very good and will not be eaten by mistake.
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Because desiccant will protect the quality of the food. It will not remain in the food, and there is no harm to the food.
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The desiccant will not be stored in the food, the reason why it can be used in the food is that it has been tested and qualified by the state, and the desiccant that we come into contact with in our lives is food-grade, and after some sealing treatment, and then put it in the food
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1. Quicklime desiccant - white powder or lumpy, which is strongly alkaline and has certain harm to the human body.
2. Silica gel desiccant - colorless transparent or translucent spherical glassy particles, the main component of silicon dioxide, neutral substance, non-toxic and harmless, no harm to the human body.
3. Mineral desiccant montmorillonite desiccant - gray or off-white or earthy yellow particles, directly taken from ore, if it does not contain heavy metals after testing, it will not cause harm to the human body.
4. Preservative - this is not a desiccant in the real sense, and it is generally common in the packaging of ham sausages. Brown powder, the main ingredient is mainly iron powder, and there are no reports of harm to the human body.
The above are four commonly used desiccant, from the safety of the article itself, except for quicklime desiccant may harm the human body, the others are relatively safe, especially the desiccant produced by regular manufacturers for food or drug packaging. If it is not quicklime desiccant that falls in, then based on this consideration, this pot of soup can still be eaten.
However, we have to wonder: 1. Whether it is a desiccant produced by a regular manufacturer. 2. Has the pack of desiccant been exposed to the air for a long time?
If it is not produced by a regular manufacturer or has been exposed for a long time, then the package of desiccant may have been contaminated (especially E. coli), or it may have a lot of dust on its surface due to the packaging. Based on this consideration, this pot of soup should not be eaten again.
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There are many types of desiccant, and they cannot be eaten directly except for food.
Food desiccant is generally non-toxic, tasteless, non-contact corrosive, and non-environmental pollution. Food desiccant is to reduce the humidity in food bags and prevent food from spoiling; The desiccant in the laboratory such as concentrated sulfuric acid, soda lime, etc. is too dangerous, but they also have advantages, such as extremely fast water absorption, high efficiency, cheap and so on. A commonly used desiccant in food is calcium oxide (calcium).
oxide) and silica gel (silica
gel), montmorillonite desiccant, calcium chloride desiccant, fiber desiccant.
If you can take it out, it's fine, but many desiccants are not made according to the standard, so it is not recommended to eat them after cooking them by mistake.
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Recently, CCTV reported a news that a junior high school student mistakenly put desiccant into a thermos cup, causing **, causing a teenager to be almost blind.
In another news, a five-year-old boy opened the desiccant packet in the snack bag, poured the desiccant into the bottle and added water to play, which happened instantly**, and his eyes were blinded due to alkaline liquid erosion! I usually only tell children not to eat desiccant by mistake, but I didn't think that calcium hydroxide would be produced after mixing with water, which would cause such serious consequences! Parents are asked to do their homework!
It is understood that at present, desiccant with calcium oxide and silica gel as raw materials is the most common in food. Calcium oxide, that is, quicklime, has been widely used in food desiccant, and is welcomed by manufacturers because of its strong water absorption, convenience and low price. However, quicklime becomes mature lime when exposed to water, and a lot of heat will be generated during the neutralization reaction.
Quicklime is accidentally ingested or accidentally into the eyes, which can damage the digestive tract or eye conjunctiva, and even cause blindness in severe cases, and it is not uncommon for desiccants to harm children.
Chips, nuts, biscuits, ......In a variety of snacks, food desiccants are widely used to prevent food from getting wet. Most people have the idea that the desiccant in food bags is "inedible", but the reason for this is unknown. Discarding or letting children play with it in their hands is the most common practice for most people, but this small bag of desiccant has a lot of safety risks.
In the case that it is impossible to judge whether the ingredients of the desiccant are dangerous or not, parents should take them away and throw them away in time to keep their children away from the desiccant with potential safety hazards. At the same time, parents should develop the habit of taking away the desiccant in time after opening the food package before giving the food to their children.
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The main ingredient of general food desiccant is calcium oxide, and the chemical formula is CAO
If you put it in water, it will react with water and release heat, but it will not happen.
Equation: CaO+H2O=Ca(OH)2, calcium hydroxide is generated, and it is harmful to the human body when people drink it.
If you put the desiccant in the water and let the hot water cool, the quality of the water will decrease.
Different desiccant is placed in water, and the phenomenon that occurs is different.
1. Quicklime desiccant - put it in water, it will release a lot of heat. This is due to the reaction of calcium oxide with water to produce calcium hydroxide. At this time, the water is strongly alkaline, and after drinking, it will quietly corrode the oral cavity, esophagus and gastrointestinal mucosa.
If the water is left still for a period of time, there is a possibility of precipitation, which is due to the reaction of calcium hydroxide in the water with carbon dioxide in the air to form calcium carbonate.
2. Silica gel desiccant - this desiccant is a neutral substance, the chemical Qisong segment is stable in quality, and does not react with other substances except hydrofluoric acid and strong alkali. If you put it in water, it may break up by itself because it releases a little heat when it absorbs water. It is insoluble in water and harmless to the body after drinking.
By: tyty43
There are various types of desiccant. It depends. There are two commonly used types: silica gel and calcium oxide (quicklime).
Silica gel is like a mung bean. Put it in the water and it will turn slimy. That's why it's called silicone "glue".
Before the calcium oxide desiccant absorbs water, it is irregular granular (it turned out to be a big stone, look what it looks like). When you absorb enough water, it becomes a powder. Dry calcium oxide in water will produce a more violent reaction.
Fever, squeaky and may emit white smoke. The calcium oxide that has absorbed water has been converted into calcium hydroxide. When you put it in water, there is no reaction.
Drinking it is not very good for the human Sakura limbs. But it's all right. Of course, it is absolutely poisonous and does not kill people.
Pick me! ok!!
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It depends on what type of lime is thrown out quickly.
Silicone is generally fine, but don't eat it.
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Desiccants are not poisons and can be used. Some people will also accidentally eat desiccant, and nothing will happen. Not so poisonous.
The above is a suggestion for the problem of "accidentally soaking the desiccant in the thermos cup in hot water", I hope it will help you, I wish you health!
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Some desiccant is discolored and invalid, you can see the description.
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