The tuber of yam has been used as medicine since ancient times, and Shennong Herbal Classic is listed as the top grade. Flat, cool and moist, sweet and non-toxic. Can strengthen spleen and stomach, tonify lung and kidney, and can be used for treating diarrhea, chronic dysentery, thirst, fatigue, cough, nocturnal emission and frequent urination. It is used as a tonic and strong medicine by the people, and also has expectorant effect. Traditional famous prescriptions include Liuwei Pill, Bawei Pill and Shen Ling Baizhu Powder.
Yam is rich in nutrition. Tubers are rich in essential amino acids, protein and starch. In addition, it also contains mucus, allantoin, choline, cellulose, vitamins A, B 1, B2, C and minerals such as calcium, phosphorus, iron and iodine. Yam is not only a kind of medicinal function, but also a good healthy vegetable.
Long yam, which is distributed in Chinese mainland, Japanese and other temperate regions, has slender stems, long leaves and long sticks, and is of excellent quality. Xinyuan Tiegun Yam in Dingtao County and Huaiqing Yam in Heze City are the best yam with solid quality.
2. What is morphology? There are tubers produced abroad. My domestic products are basically long sticks and cylinders. The skin is light brown to dark brown, and the darker the skin, the better. Fibrous roots can also be seen on the skin, and yam has mucus. The processed medicinal materials are peeled white slices, which are sticky when chewed.
If you want to have a specific sensory understanding, you can enter fresh yam, iron yam and yam medicinal materials in Baidu, click on the picture, and then click search to see the picture of yam.