What's in the salt

The main components of sea salt are minerals such as potassium, iodine and sodium chloride. Rock salt also has a name called rock salt, which looks like a stone. It is because the minerals in the stratum combine with sea salt to form sea salt, which is mainly composed of minerals. Rock salt is rich in minerals, including calcium, potassium, magnesium and other elements, which can bring rich nutrition to human body.

There were many kinds of salt in ancient times, including crimson snow, peach blossom, blue, purple and white. From the source, it can be divided into: sea salt is fried by sea brine, well salt is fried by well brine, alkali salt is fried by scraping alkaline earth, pool salt is dried by pool brine, and cliff salt is born between soil cliffs. Sea salt, well salt and alkali salt come from people, while pool salt and cliff salt come from heaven.

"Ming History" records: "The salt of Xiezhou is made of geomantic omen; Salt in Ningxia scraped the ground; Huaizhe salt boiled waves; Sichuan-Yunnan salt suction well; The salt in Fujian and Guangdong accumulated brine; The salt in Huainan was fired; The salt in Huaibei is dry; The salt in Shandong is fried and bigger. " Tao Hongjing's Records of Famous Doctors in the Southern Dynasties recorded that East Sea Salt, North Sea Salt, South China Sea Salt, Hedong Salt Pool, Liang Yi Salt Well, Xiqiangshan Salt and Huzhongshu Salt have different colors, and Hedong Salt wins.

Salt has a wide range of functions: sterilization, tooth protection, beauty, skin cleaning, decontamination, medical treatment, important chemical raw materials, eating and so on. Salt is indispensable in people's life. The total amount of sodium ions contained in adults is about 60g, of which 80% exists in extracellular fluid, namely plasma and intercellular fluid. Chloride ion also mainly exists in extracellular fluid.

Salt has a strong insecticidal and bactericidal effect, and it is a common item to prevent and treat many fish diseases, especially fish diseases caused by bacteria, fungi and various parasites, with remarkable effect. People who cough to quench thirst and edema should not eat it; Patients with hypertension, kidney disease and cardiovascular disease should limit their intake. Too much salt can cause edema. Because there is too much salt, sodium accumulates in the body, and sodium is hydrophilic, which will cause edema and increase the burden on the kidneys.