Non-iodized salt is a refined salt without iodide. Iodine is an important raw material for the synthesis of essential thyroid hormones, which affects the production, development and metabolism of the body. Iodine exists in nature, and people mainly take it from drinking water, grain, vegetables and the surrounding environment. In order to avoid excessive iodine, it is suggested that the following people should eat non-iodized salt instead of iodized salt.
Iodized salt is made by taking salt as carrier, adding a small amount of potassium iodate and mixing evenly. The purpose is to prevent goiter commonly known as "big neck disease". In fact, iodized salt can be used in other fields besides eating, which is very beneficial to human health.
Classification of salt:
According to the source of raw materials, salt can be divided into four categories, namely sea salt, lake salt, well salt and rock salt/mineral salt.
Sea salt is made by introducing seawater into saltworks, insolating, evaporating and crystallizing. Lake salt is made of salt lake water from saltworks. The salt in the stratum is dissolved in groundwater and pumped out by drilling a well. The salt made after processing is called well salt. Once the ocean was evaporated and deposited for a long time to form rock cracks, which is rock salt.
2. According to whether it is purified or not, it can be divided into crude salt and refined salt.
After purification, the crude salt becomes refined salt with few impurities and small particles, also known as refined salt. There are many impurities and large particles, which are not purified and are called raw salt.
3. According to whether potassium chloride is added, it can be divided into low sodium salt and common salt.
Potassium ions can also produce a certain salty taste. Adding it to salt can reduce sodium intake under the premise of obtaining the same salinity, but it will be bitter when the potassium ion content is high, so it can only replace part of sodium. Generally, the content of sodium chloride in table salt is ≥97%, low-sodium salt contains 70%-90% of sodium chloride, and other 10%-30% of potassium chloride.
Refer to the above content: Baidu Encyclopedia-Iodized Salt
Refer to the above content: Baidu Encyclopedia-Iodized Salt