Kelp (fresh): Kelp contains extremely high iodine and is the main raw material for the synthesis of thyroxine in the body. Regular consumption can make hair moist and black. Kelp has certain medicinal value, because kelp contains a lot of iodine, which is the main substance of thyroid synthesis. If the human body lacks iodine, it will suffer from "coarse neck disease", that is, hypothyroidism. Therefore, kelp is the best food for hypothyroidism patients. Kelp also contains a lot of mannitol, which has the function of diuresis and detumescence, and can prevent and treat renal failure, senile edema and drug poisoning. Mannitol, together with iodine, potassium and nicotinic acid, has a good preventive and therapeutic effect on arteriosclerosis, hypertension, chronic bronchitis, chronic hepatitis, anemia and edema. The high-quality protein and unsaturated fatty acids in kelp have certain preventive and therapeutic effects on heart disease, diabetes and hypertension. Chinese medicine believes that kelp is salty and cold, which has the functions of softening and resolving hard mass, diminishing inflammation, relieving asthma, diuresis, removing fat and lowering blood pressure, and has a good effect on preventing and treating silicosis. Kelp colloid can promote the excretion of radioactive substances in the body with stool, thus reducing the accumulation of radioactive substances in the human body and reducing the incidence of radioactive diseases.

What is the healthiest kelp to eat?

Wax gourd kelp kelp contains calcium, phosphorus, iron, vitamin B and other nutrients, which has the dietotherapy effect of diuresis, detumescence, moistening intestine and anticancer. Wax gourd, like kelp, belongs to the food of clearing away heat and relieving summer heat. These two kinds of food together can not only relieve summer heat, but also help to lose weight.

Kelp and wax gourd are best for soup. If you like to eat broad beans, you can also add a little to the soup. Broad beans are rich in crude fiber and other effective nutrients, which can help soup to lose weight more effectively.

You should put some kelp in greasy food.

Kelp is alkaline food. Adding some kelp to greasy food can not only reduce the accumulation of fat in the body, but also increase the body's absorption of calcium when eaten regularly.

There are two kinds of kelp: light dried and salt dried. Light dried kelp is made by drying cut fresh kelp in the sun for two days, and salt dried kelp is made by pickling fresh kelp with 20% ~ 25% salt for seven days, and then drying.

Saponins in kelp tofu can inhibit fat absorption and prevent the generation of peroxide in arteriosclerosis. However, saponin can cause iodine deficiency in human body, and kelp is rich in iodine necessary for human body (24g iodine per100g kelp). Because kelp contains more iodine, it can also induce goiter. When eaten together, the saponin in tofu can be discharged more and the iodine in the body can be in a balanced state.

You are very particular about buying kelp and eating kelp.

After drying, a layer of frost naturally forms on the surface of kelp, which is a normal phenomenon. It is caused by the weathering of plant alkali contained in kelp into mannitol and its accumulation on the surface. Not only harmless to human body, but also diuretic and detumescence. Don't mistake it for salt precipitation, nor is it a sign of damp and moldy, so don't use it as a standard to measure the quality of kelp. The correct identification of kelp should be based on broad body thickness, length greater than 150 cm, dark ink or dark brown, no rot at the tip, dryness, salt content less than 25%, no sand and no impurities.

Kelp should also be eaten with tofu, because tofu also contains a variety of saponins, which can promote the excretion of iodine and easily cause iodine deficiency, and kelp happens to be a food rich in iodine. Chinese medicine believes that kelp is cool and can diminish inflammation and reduce fever. Therefore, eating kelp regularly can also enrich blood, moisten lungs and lower blood pressure.

When people eat kelp, it often affects the quality of kelp dishes because of improper methods, which makes many people disgusted. Many people are used to soaking kelp with clear water before stewing. After stewing for more than an hour, it still feels hard to chew. In fact, the correct way to eat kelp is to wash it, steam it in a steamer for half an hour, and then soak it in clear water for one night, which will make it crisp and tender. A few drops of vinegar will be added when stewing, frying or cold salad, and the texture of the dish will be very different from the above.

Pay attention to two points when eating kelp.

Many families have saved some dried kelp and are not in a hurry to eat it. Some people think it can be stored for a long time like other seafood.

1, in fact, you should eat kelp as soon as possible after you buy it. If you can't finish eating, put the unpacked kelp in the refrigerator or freezer. Because the unpacked kelp is affected by temperature, light and other factors during storage, its nutritional components will be degraded. On the contrary, microorganisms will continue to multiply and harmful components will continue to increase. These reasons will cause kelp to deteriorate and become inedible.

2. When eating kelp, it should be cleaned and soaked in water according to the actual situation, and the water should be changed constantly, generally soaking for more than 6 hours. If kelp is as tough as boiled after soaking in water, it means it has gone bad and can't be eaten any more.

There are tricks to soften kelp.

Method 1: soak kelp in rice soup, or add a little edible alkali or baking soda when cooking kelp, but not too much. After boiling, soak kelp in cold water, clean it, and then take it out for eating.

Method 2: Open the dried kelp in groups, steam it in a steamer for about half an hour, and then soak it in clear water for one night.