Kelp has high medicinal value. China is one of the first countries in the world to treat diseases with kelp. As early as the 4th century AD, Ge Hong, a medical scientist, recorded that kelp was used to treat "scabies" in "Elbow Emergency Prescription". Scabies is a disease called diffuse goiter in modern medicine. Tao Hongjing of Liang Dynasty further clarified in his Records of Famous Doctors that kelp can treat "twelve kinds of edema, swelling and pain, pneumatosis and fistula". Modern scientific determination shows that kelp is rich in alginate and iodine. Kelp tastes salty and cold, and has the effects of softening and resolving hard mass, clearing away heat and toxic materials, relieving cough and asthma, diuresis and detumescence. Modern medical research has found that kelp contains good disease-resistant substances and rich nutrients.
According to research, laminin is contained in kelp, which has the function of lowering blood pressure. Japanese experts made a successful experiment, soaking kelp in water at 50 ~ 60 degrees Celsius, and then giving concentrated kelp water directly to patients with hypertension. 10 minutes later, the blood pressure drops by 8-9mmhg. 1 hour later, blood pressure decreased 17.3 mm Hg; After 4 hours, the blood pressure dropped by 2 1.5 mm Hg. Japanese scholar Masasawa Zhuangliang wrote that soaking two or three pieces of kelp roots in a cup of boiling water for one night and drinking water to eat the roots the next day can treat high blood pressure and prevent arteriosclerosis. In addition, due to the comprehensive effect of various minerals and trace elements in kelp, the accumulation of fat in human body tends to subcutaneous and muscle tissues, but rarely accumulates in heart and blood vessels, and the cholesterol content in blood is obviously reduced. Researchers made 6- nitromannitol and mannitol nicotinate from kelp, which had good lipid-lowering effect. Moreover, kelp contains more fucoidan and kelp polysaccharide, which has heparin-like activity, can reduce blood viscosity and prevent thrombosis.
There is a layer of powdery hoarfrost on dried kelp, which is the precipitate of kelp, and it is medically called mannitol. It is an excellent osmotic diuretic, and its fine products can effectively reduce intracranial pressure and intraocular pressure, alleviate brain edema, and effectively treat edema, ascites, renal failure and other symptoms after infusion. In addition, kelp also has the function of detoxification, and can be used to treat skin dampness, itching, hot furuncle in children, etc.
Kelp for preventing constipation and hemorrhoids is rich in dietary fiber, which is a macromolecular substance that cannot be digested by human digestive enzymes and cannot be absorbed by small intestine, so it cannot participate in metabolism. However, these fibers belonging to polysaccharides have strong adsorption. After absorbing water, they form a three-dimensional network structure, which is several times larger than the original one. It can stimulate intestinal peristalsis, shorten the retention time of feces in the intestine, produce defecation in time, and defecate smoothly, thus preventing constipation and hemorrhoids.
Controlling the blood sugar level The rich dietary fiber in kelp basically does not produce heat and energy, which is difficult to be digested and absorbed. After eating, it can satisfy satiety and reduce hunger. Dietary fiber can also slow down the absorption of glucose in intestine, prolong the emptying time of food and reduce postprandial hyperglycemia. According to research and analysis, there is a component in kelp called sodium alginate, which can improve the function of islet, enhance insulin activity, improve the sensitivity of diabetic patients to insulin and help control blood sugar level. Therefore, kelp is an effective medicinal food for treating diabetes. But the consumption should not be too large, otherwise it will cause diarrhea and lead to mineral loss.
Kelp, which is beneficial to pregnant women's fetus, is rich in iodine, and pregnant women need a lot of iodine supply before and after delivery. If iodine is deficient, it will affect the thyroid development of the fetus. After birth, the baby is short in stature, short in limbs, impaired in hearing and language, and mentally retarded. In addition, pregnant women are often prone to constipation, hemorrhoids, pregnancy-induced hypertension, pregnancy poisoning and other frequently-occurring diseases. Eating kelp is very good for them. In short, eating kelp regularly during pregnancy can not only prevent common diseases of pregnant women, but also help the normal development of the fetus.
Enhance Anti-cancer Ability Kelp contains alginic acid and mannitol, which are polysaccharides and have the function of removing foreign bodies, so it can enhance the anti-cancer immunity of human body. Ichiro Mimoto, a Japanese medical professor, once conducted animal experiments. He first injected 1 carcinogen into 30 rats every week. At the same time, he made kelp extract from kelp into fine powder, decoction and dialysate, then mixed it with solid feed, and then gave it to 265 and 438+0 of 30 mice respectively. After 20 weeks, the mice were dissected. The results showed that carcinogens in mice were inhibited, and the incidence of cancer was 43%, while the incidence of cancer in the control group without kelp concentrate was as high as 78%. It shows that refined kelp products have obvious inhibitory effect on cancer.
Prevention and treatment of various chronic diseases kelp contains a lot of nutrients beneficial to human body, especially rich in iodine, calcium and iron. According to scientific determination, the iodine content in kelp per100g is 2400 mg, which is 20-30 times that of common fish. The calcium content per hundred grams is 1 177mg, which is five times that of soybean. The iron content per 100g is 150mg, which is 6 times that of pig liver. Therefore, kelp has become an important iodine source to prevent goiter and maintain the normal function of thyroid gland, and is called "iodine king" and "iodine bank". At the same time, it is also a good food for preventing and treating osteoporosis, rickets and iron deficiency anemia. Sodium alginate and alginic acid in kelp have many pharmacological effects, which can prevent leukemia and bone pain and have hemostatic effects. It can also prevent the harm of radioactive substances to human body. A study by the University of Tokyo in Japan shows that F- fucoidan extracted from kelp has the effect of treating liver cirrhosis.
About half of the ingredients in beauty and bodybuilding kelp are alginic acid and mannitol, which are low-calorie sugars and only contain a small amount of protein and lipids. For obese people with excess calories, it is undoubtedly an ideal diet food. Moreover, an appetite suppressant made of fucoidan, fucoidan and heteromolecular amphetamine can be extracted from kelp, and a satisfactory weight loss effect can be achieved. In recent years, foreign cosmetics manufacturers have also made various creams, ointments, shampoos, etc. from the effective ingredients of kelp. Used for blackening hair, caring skin and beautifying face. Kelp is also made into water-soluble tablets, powders and emulsions for bathing, which is called "kelp bath" and has the functions of relaxing bones and muscles and relieving fatigue.
Healthy and long-lived kelp absorbs dozens of minerals and trace elements from seawater, which is just similar to the components contained in human body fluids originating from the sea. Regular consumption of kelp can supplement the substances that the human body lacks, and make human body fluids closer to the internal environment necessary for health and longevity. This kind of internal environment is actually an internal environment in which body fluids are alkaline, and the acidic internal environment caused by too much acidic food is an important factor affecting the health and longevity of modern people. With the improvement of people's living standards, the consumption of chicken, duck and fish is increasing day by day, and the tendency of sour food is becoming more and more obvious, which is a growing threat to human health, leading to many teenagers being overweight and obese prematurely and middle-aged and elderly people suffering from premature arteriosclerosis. Therefore, it is urgent to correct the acidity of body fluids. Among all vegetables, kelp is second to none in alkalinity. According to statistics, compared with people who don't eat kelp, the average prevalence of elderly people who eat kelp for many years is 5-8% lower, and their average life expectancy is 4-8 years. Japanese monks have always lived a long life, and one of the important reasons is that they often eat kelp and burn tofu.
There are many ways to eat delicious and cheap kelp, such as stewed meat, boiled fish, cold salad and fried. Cold kelp silk, cool and refreshing, delicious and mellow, most suitable for summer consumption; Stir-fried kelp with shredded radish and celery as accessories is colorful and appetizing. In Japan, kelp with good quality and low price has become the most popular food. A poll in Japan shows that about 60% people want to increase kelp food. The Japanese are convinced that kelp has made great contributions to the great progress of national health and longevity since modern times.
Kelp is so cute, should we eat as much as possible? Recently, experts from the Faculty of Medicine of Tokushima University in Japan conducted an experiment for this purpose, and thought that the most reasonable intake was 10g per day. In addition, don't drink tea immediately after eating kelp, and don't eat sour fruits such as grapes and hawthorn immediately to avoid affecting the absorption of minerals. Because kelp tastes salty and cold, people with spleen and stomach deficiency, abdominal distension and diarrhea, and loss of appetite should not eat it.
It should be reminded that according to the chemical analysis of kelp by scientists, the arsenic content in kelp far exceeds the national standard below/kg kloc-0/mg, and some kelp has arsenic content as high as 35-40mg per kg. This is caused by seawater pollution caused by industrial wastewater discharged from coastal areas. If a large amount of arsenic is ingested in a short time, it can cause acute poisoning; If a small amount of arsenic is ingested for a long time, it will cause chronic poisoning and even cancer. Because arsenic is easily soluble in water, the arsenic content of kelp polluted by arsenic can be reduced after soaking in water. Experiments show that the arsenic content per kilogram of kelp can be reduced to below 1mg after soaking in clear water for 24 hours, which meets the food safety standards and can be eaten safely.