1, salted salt
It is a kind of salt with slightly lower precision, and it is dried sea salt evaporated from seawater. According to the sodium content, the salt purity is 9 1%. The purity is not too high because there are many other minerals in seawater besides sodium chloride, such as magnesium chloride, calcium chloride, calcium sulfate and magnesium sulfate.
2. Low sodium rock salt
Replacing part of sodium with potassium has a slightly different salty taste. But in order to reduce sodium intake, don't add any more. Otherwise, sodium will not be reduced, and potassium chloride will be eaten too much. Iodization is normal, and the added amount meets the relevant standards. 10 g salt contains 250 micrograms of iodine, while the recommended daily intake of iodine for normal adults is 120 micrograms, and the maximum limit is 600 micrograms.
Selection method of edible salt:
1. Select the type. 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 find thyroid abnormalities such as thick neck, you should go to the hospital to check whether it is iodine excess or iodine deficiency, and choose salt according to the situation.
2. Look at the color. When observing the color of salt, sprinkle a thin layer of sample on paper and observe its color carefully. Good salt is white, bad salt is gray or light yellow, and bad salt is dark gray or yellowish brown.
3. smell the smell. When identifying the smell of salt, you can take about 20g samples, grind them in a mortar and smell them immediately. Generally speaking, good salt has no odor, inferior salt has no odor or slight odor, and inferior salt has odor or other odor.
4, look at the shape, the sensory identification method of salt shape is the same as its color identification, while observing its shape, we should pay attention to whether there are impurities visible to the naked eye. High-quality salt crystals are neat, hard, smooth, transparent or translucent. No caking, no moisture absorption and no impurities.