The salt in the market can be roughly divided into iodized salt, non-iodized salt and fortified nutrient salt. Coastal residents often eat seafood with more iodine, so they can choose non-iodized salt.

If you have special needs, you can also choose fortified nutrients, including selenium salt, zinc salt, riboflavin salt, iron salt, low sodium salt and so on. , you can choose according to your own situation. Generally speaking, the elderly mainly eat low sodium salt, and can eat calcium salt and selenium salt in moderation. Teenagers mainly eat calcium salt, with some zinc salt and selenium salt, middle-aged people can eat several kinds of salt alternately.

For ordinary people, long-term use of low sodium salt is not very beneficial. This is because the sodium content in low-sodium salt is reduced and the taste is light, so people often need to add more low-sodium salt when cooking to get the same taste as ordinary salt. The amount of low-sodium salt has increased, and the added sodium is similar to ordinary salt, which loses the significance of choosing low-sodium salt.

Matters needing attention in purchasing edible salt

1. Buy according to cooking needs: use large coarse salt when curing food, which has good flavor, and is beneficial to the slow dissolution and penetration of salt during curing, with better effect. It is not advisable to use large grains of salt when cooking, which will dissolve slowly, and the salt in the dish will increase the sodium intake.

2. Pay attention to the shelf life: the main chemical component of salt is sodium chloride. Although the chemical properties of sodium chloride are very stable, potassium iodide is added to the salt. Although the properties of potassium iodide are relatively stable, the iodine content in salt will be reduced by volatilization under the conditions of light, wind and heat for a long time.