2 The role of salt iodization and how it changes throughout the process

Iodine here refers to the element iodine.

Salt iodization is the safest, most economical and most effective way to prevent and treat iodine deficiency diseases. Iodized salt is salt made by adding a certain amount of potassium iodate to ordinary salt and mixing it evenly. It has both the physicochemical properties of salt and iodine.

Long-term consumption of iodized salt can play a role in supplementing the essential elements of the human body and fitness, disease prevention and treatment. The purpose is to supplement the trace and macro elements necessary by the human body.

Iodine for people, although it has a very low content of the human body, but the role is very important, absolutely can not be missing it, once the human body lacks iodine, a series of pathologies will occur, that is, the so-called "iodine deficiency disease".

Iodine - contains thyroxine raw materials: There is a pair of glands in the front of the human neck close to the trachea, which is a bit like the ** shield armor used by soldiers to attack with low weapons in ancient times, so it is called the thyroid gland.

The thyroid gland is an important endocrine gland in the human body, and the hormone it secretes is called thyroxine, and its main physiological function is to promote the metabolism of the body, promote the development and growth of fetuses and adolescents, especially its impact on the normal development of the nervous system and intelligence is more important.

If iodine, an important raw material for the synthesis of thyroid hormones, is deficient, the amount of thyroid hormone will be reduced or insufficient, which will affect metabolism, block the development and growth of the body, and make the physiological functions of the whole body abnormal. First and foremost, it has an impact on the nervous system and mental development, resulting in varying degrees of intellectual impairment, mental retardation or intellectual disability.

Therefore, eating iodized salt can supplement the iodine content of the human body, but you can't eat too much, you should eat it in moderation...

Hello, because iodine is an essential element for the human internal environment, only a certain amount can maintain the homeostasis of the internal environment, and we will only consume iodine when we eat seafood (kelp is more), so it is generally very lacking in this essential element, if there is a lack of iodine, you will get goiter (big neck disease) so in order to meet people's needs for iodine, add an appropriate amount of iodine to table salt to meet the needs of people's internal environment.

The iodine in "salt iodization" refers to the element iodine, specifically potassium iodate, kio3

Potassium iodate kio3 is added, because potassium iodide is a colorless transparent or white translucent hexagonal crystal or white granular powder, odorless, salty, bitter, and slightly hygroscopic. It is easy to deliquesce in moist air. When exposed to light and air, free iodine can be precipitated and yellow, and it is more likely to turn yellow in acidic aqueous solution; It is easily soluble in water and significantly absorbs heat when dissolved; The taste is not good, and this is not the case with potassium iodate.

Iodine is generally potassium iodate, and what people need is iodine, which is beneficial to people.

The element iodine is mainly found in the form of potassium iodate (kio3) in table salt.

After the salt iodization project was launched in China, we tried to add ki, but in recent years, we have changed to kiO3 because potassium iodide and salt change the taste of food (bitterness) when cooking.

It is potassium iodate that is added because it is more stable than potassium iodide!

The element iodine, in the form of potassium iodate (kio3), mainly prevents goiter.

Classic elements, to prevent a big neck.

c Analysis: The "iodine" in iodized table salt does not exist in the form of elemental, molecular, atomic and other forms, but refers to the elements

The "iodine" in iodized salt does not exist in the form of elemental, molecular, atomic and other forms, and the "iodine" referred to here is an element that emphasizes the existence and has nothing to do with the specific form

The correct answer is: c The "iodine" in iodized table salt refers to potassium iodate kio3, so it refers to the element.

Since 1993, China has gradually promoted and implemented universal salt iodization throughout the country. The basic meaning of national salt iodization is: all edible salt and salt for food processing must be iodized salt; Livestock salt should also be iodized.

So is eating iodized salt harmful for people in areas with normal iodine nutrition? The International Council for the Control of Iodine Deficiency Diseases has pointed out that the safety range of human iodine intake is relatively large, and from a medical point of view, a person with normal iodine nutrition can consume less than 1,000 micrograms of iodine per day. Judging from the current situation in China, in areas with normal iodine nutrition, the daily iodine intake of the population is generally 200 micrograms to 300 micrograms, and their urinary iodine level is mostly about 200 micrograms.

According to the iodine content of iodized salt in China, the iodine intake from salt is about 200 micrograms after a daily eclipse of 10 grams of salt, and the urine iodine rate of those who eat iodized salt reaches about 300 micrograms and 500 micrograms, which is within the safe range. The daily iodine intake of the masses in areas with high iodine in China is 850 micrograms and more than 1,000 micrograms, and the urinary iodine level is mostly more than 800 micrograms. Epidemiological investigations and animal experiments have shown that long-term continuous ingestion of high iodine can cause high iodine goiter.

There are more than 16 million people living in 91 counties in 8 provinces in China, and these areas should not be iodized salt.

Prevent the thyroid gland.

Harm: Iodine deficiency disease is an endemic disease that seriously endangers human physical and mental health, and iodine deficiency can cause abnormal menstruation, infertility, miscarriage, stillbirth and other consequences. It can also cause endemic thyroid adenomas.

More seriously, it affects brain development and leads to intellectual impairment. Therefore, eating iodized salt is very important for everyone.

Benefits: There are two key periods of brain development: the fetal period and before the age of three, and iodine deficiency during these periods can cause intellectual impairment and is unlikely to recover.

Therefore, during the critical period of brain development, if people in iodine-deficient areas do not eat iodized salt, so that the body does not get enough iodine, brain development will be hindered. Therefore, it is more important for pregnant women to consume iodized salt before pregnancy and for infants and young children to consume iodized salt. Because iodized salt can help us grow healthily, we should eat more iodized salt.

Eat 10 grams of salt a day.

Iodine plays an important role in regulating the production and decomposition of proteins, promoting sugar and fat metabolism, promoting the absorption and utilization of vitamins, and promoting growth and development. Iodine deficiency in the body will cause mental retardation in children and adolescents, impaired mental function in adults, and diseases such as goiter and anemia.

Mainly add kiO3, mainly to supplement the iodine needed by the human body to prevent big neck disease.

What is the iodized salt that is added to table salt for daily consumption?

a.Elemental iodine bPotassium iodide cPotassium iodate dIodine-containing organic matter

Potassium iodate (kio3) is added to the table salt, which is easy to decompose when heated for a long time, resulting in the loss of iodine.

Iodized salt refers to those that contain potassium iodate (KIO3) and sodium chloride (NaCl).