The selenium-enriched areas that have been discovered include: Enshi in Hubei (selenium in the world), Ankang in Shaanxi (Selenium Valley in China), Dashan Village in Shitai, Anhui (the first selenium-rich village in the world), Kaiyang in Guizhou, Shuicheng in Guizhou, Longyou in Zhejiang, and Shandong Zaozhuang, Sichuan Wanyuan, Fengcheng, Jiangxi and so on. However, some of these selenium-enriched areas have small areas, and some areas are also associated with lead, mercury, and other undesirable minerals, and are not suitable for direct human consumption. At present, the real development value is mainly in Ankang of Shaanxi and Enshi of Hubei. According to a survey conducted by the China Nutrition Society in 13 provinces and cities in China, the average daily selenium intake of adults is 26-32 micrograms, which is far from the minimum 50 micrograms recommended by the Chinese Nutrition Society. The selenium content of general plant foods is relatively low. Therefore, it is imperative to develop selenium-rich foods that are economical and convenient for long-term consumption. Enshi City, Hubei Province, is the world's only proven selenium mine. It has the world's largest selenium reserves in the world and the venue for the Global Trace Elements Conference.
Selenium is a chemical element and the chemical symbol is Se, a non-metal. Can be used as photosensitive materials, catalysts for electrolytic manganese industry, essential nutrients for animals, and beneficial nutrients for plants. Selenium can improve human immunity, promote the proliferation of lymphocytes and the synthesis of antibodies and immunoglobulins. Selenium has obvious inhibitory and protective effects on various cancers such as colon cancer, skin cancer, liver cancer, and breast cancer. Its intermediate metabolite methylenol has a strong anticancer activity. Selenium and vitamin E, allicin, linoleic acid, barium, zinc and other nutrients have synergistic antioxidant effects and increase antioxidant activity. At the same time, selenium has the effect of reducing and alleviating the toxicity of heavy metals.
benefit
First of all, we must understand the composition of tea, confirmed by modern scientific research, tea contains more than 450 kinds of organic compounds, more than 15 kinds of inorganic minerals, most of these ingredients have health, disease prevention effect.
1, selenium-enriched tea has lipid-lowering diet to prevent cardiovascular and cerebrovascular diseases. The relationship between drinking tea and losing weight is very close. The book “Shen Nong Materia Medica†has already mentioned the role of tea in weight loss as early as 2,000 years ago: “Jiufu is at ease and Qi does not care to be oldâ€. Modern scientific research and clinical trials have confirmed that drinking tea can reduce blood lipids and cholesterol and make the body lighter. This is because the phenol derivatives, aromatic substances, amino acids, and vitamins in tea are comprehensively coordinated. As a result, the combined effects of tea polyphenols, tea catechins, and vitamin C, in particular, can promote fat oxidation, aid digestion, and reduce lipids and weight loss. In addition, tea polyphenols can dissolve fat, and vitamin C can promote cholesterol excretion. Tea itself contains tea gannin, tea gannin is to improve the toughness of blood vessels, so that blood vessels are not easily broken.
2, anti-cancer. The combined effects of the ingredients contained in green tea—tea polyphenols and caffeine—beyond functioning to refresh and rejuvenate the body, it also has the effect of improving human immunity and cancer resistance. In recent years, the American Chemical Society has found that tea not only inhibits digestive system cancer but also inhibits skin, lung, and liver cancers. After scientific research has confirmed that the organic anti-cancer substances in tea mainly include tea polyphenols, theophylline, vitamin C and vitamin E; the inorganic anti-cancer elements in tea mainly include selenium, molybdenum, manganese and barium. Chinese and Japanese scientists believe that catechins in tea polyphenols have the best anticancer effects.
3, anti-virus sterilization. The use of tea as a detoxification medicine can be traced back to the ancient times of the Shen Nong period (about 2737 BC). “Shen Nong tasted a hundred herbs and met seventy-two poisons on the day and got tea and solved it.†This is said in “Historical Records III Imperial Book, Huai Nian Xiu Wu Xun, and Ben Cao Yan Yi have all been recorded. In his "The Effectiveness of Tea" in the world's first authoritative tea book more than 1200 years ago (AD 780), Cha Sheng Lu Yu pointed out: "Since tea is cold, it is most appropriate to use it as a tea. Drinks ... If you feel body heat, thirst, nausea, brain pain, tired eyes, tired limbs, uncomfortable joints, drinking four or five teas will be effective."
4, longevity. Selenium-enriched tea has anti-aging effects on human body mainly reflected in the effective coordination of several chemical components and vitamins, especially tea polyphenols, caffeine, vitamin C, aromas, lipopolysaccharides, etc., which can enhance the activity of human heart muscle and The elasticity of blood vessels inhibits arteriosclerosis, reduces the incidence of hypertension and coronary heart disease, and enhances immunity, thereby anti-aging and longevity. According to medical research, tea polyphenols, in addition to lowering cholesterol and triglyceride levels in the blood, can also increase the toughness and elasticity of microvessels and reduce blood lipids, which is extremely useful in the prevention and treatment of common diseases such as hypertension and cardiovascular diseases. . Selenium-enriched tea contains selenium and organic selenium. It is more easily absorbed than selenium in grain and oil. Dr. Richard P. Watts of the United States believes that adding selenium to vitamin C and vitamin E in foods can make it a triple agent. The lifespan of human beings is prolonged, and selenium-rich tea is rich in these exotic elements of life. The selenium content of food is greatly affected by geography. The difference in soil selenium causes great differences in selenium content in foods. Selenium content in soil is below 0.6 mg/kg, which belongs to selenium-poor soil. 72% of China's land is depleted in selenium or selenium-deficient soil. Long-term intake of selenium-deficient food will inevitably cause selenium deficiency disease.
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