ziyu yam, also known as yam, sweet potato, yam, etc., is the finished product name of yam, which is the root tuber of Dioscorea zingiberensis, a perennial herb of Dioscoreaceae, and is excavated in winter. Yam is easy to cultivate and most suitable for growing in yellow sandy soil. China has been cultivating yam for hundreds of years. It is widely distributed, including Henan, Fujian, Shandong, Hebei and other places.
Ziyu yam is rich in nutrition and has high medicinal value. It has the effects of invigorating qi and nourishing yin, invigorating spleen, lung and kidney, relieving asthma and cough due to lung deficiency, nocturnal emission due to kidney deficiency, and quenching thirst due to deficiency of heat. Bazhen cake, a famous health-care and life-prolonging food in Ming Dynasty, is a cake made of eight kinds of Chinese medicines, such as yam, hawthorn and malt, which are ground into fine powder and then mixed with rice flour. It is used to treat the diseases of weakness of the spleen and stomach, anorexia, abdominal distension, sallow and emaciated face and diarrhea in loose stool, and the effect is remarkable. In winter, keeping warm stomach and keeping fit, Huaishan is a cheap tonic for Xian Yi, young and old.
Efficacy and function of Ziyu Huaishan
1. Spleen, stomach and digestion. Dioscorea opposita contains amylase, polyphenol oxidase and other substances, which are beneficial to the digestion and absorption function of the spleen and stomach. It is a dual-purpose product of medicine and food that blindly tonifies the spleen and stomach. Both spleen yang deficiency and stomach yin deficiency can be eaten.
2. Prevent diseases. Dioscorea opposita can prevent the atrophy of connective tissue, so it can prevent the occurrence of collagen diseases such as rheumatoid arthritis and scleroderma.
3. Nourishing kidney and replenishing essence. Huaishan contains a variety of nutrients, which have the functions of strengthening the body, nourishing the kidney and benefiting the essence. Anyone who has symptoms such as kidney deficiency and nocturnal emission, excessive leucorrhea and frequent urination can eat it.
4. benefit lung and relieve cough. Dioscorea opposita contains saponin and mucilage, which has moisturizing function, so it can benefit lung qi, nourish lung yin and treat lung deficiency, phlegm and cough for a long time.
5. Reduce blood sugar. Dioscorea opposita contains mucin, which has the function of lowering blood sugar, can be used to treat diabetes, and is a good diet for diabetic patients.
6. prolong life. Dioscorea opposita contains a lot of vitamins and trace elements, which can effectively prevent the deposition of blood lipids on the blood vessel wall, prevent heart disease, and achieve the effects of benefiting the mind, calming the nerves and prolonging life.
Huaishan has a wide range of edible people, which can be eaten by the general population, especially for diabetics, abdominal distension, weakness after illness, patients with chronic nephritis and patients with long-term diarrhea. Cold, damp heat, excess evil and dry stool are not suitable for eating.
It should be noted that Dioscorea opposita should be soaked in salt water immediately after slicing to prevent oxidation and blackening. When fresh yam is cut, there will be mucus, which is easy to slide and hurt your hand. You can clean it with clean water and a little vinegar first, which can reduce mucus. Huaishan is delicate in texture and sweet in taste, but its skin is easy to cause skin allergy, so it is best to peel it, and wash your hands several times immediately after peeling it to prevent skin damage.