Don't? Name:? Yam, yam? , yam? , sweet potato, sweet potato, yuyan. Smell:? (Root) Sweet, warm, flat and nontoxic. English name:? nagaimo,? yamaimo,? Chinese? yam,? Japanese? mountain? yam,? Korean? yam; According to Compendium of Materia Medica, yam was changed to potato medicine for taboo because Tang Daizong was called Li Yu, and it was changed to yam for taboo because Song Yingzong was called Zhao Shu. Branch? Domain:? Eukaryotic domain? Eukarya boundary:? Plant kingdom? Plantae door:? Angiosperma? Magnoliophyta class:? Monocotyledon class? Liliopsida order:? Dioscorea? Dioscoreales division:? Dioscoreaceae? Dioscoreaceae genus:? Dioscorea? Dioscorea species:? Yam? D.? opposita

Edit the origin distribution of this section

Monocotyledons, 650 species of 10 genus, are widely distributed in temperate and tropical regions of the world. In China, Dioscorea is a genus? 1 genus, about 80 species. Originally from Pingyao and Jiexiu, Shanxi, it is now distributed in various provinces and regions of Jiangxi in North China, Northwest China and the Yangtze River Basin. The planter calls it domestic yam, and the wild yam; Chinese herbal medicines are called Dioscorea opposita, Dioscorea opposita and so on. Because of its rich nutrition, it has been regarded as a good tonic with good quality and low price since ancient times. It can be used as a staple food, a vegetable, and a snack such as candied haws. China is mainly produced in the northern part of Henan Province, and it is also cultivated in Hebei, Shanxi, Shandong, Central South and Southwest China. After the stems and leaves wither in winter, dig, cut off the roots, wash and dry. There are two main types of yam cultivated in China: common yam and sweet potato. Ordinary yam tuber is small, especially the yam produced by Guhuaiqing Prefecture (now in Jiaozuo, Henan Province, including Boai, Qinyang, Wuzhi and wen county counties) is rare, and it is known as "Huai Yam" and is known as "Huai Shen", ranking first in the country. At present, there are two places in China that have applied for national geographical indication protection products. One is "iron stick yam", which is produced in Jiaozuo, Henan; The other is "Chenjishan Medicine" which is produced in chenji, Heze City, Shandong Province, and includes "Goose Skin Rough Yam" and "Xishi Seed Yam".

Edit the pharmacological action of this paragraph

The in vitro experiment of the extract of Dioscorea opposita showed that? Has the effects of promoting interferon production and increasing t? The role of cell number. In the study of experimental arthritis rats, The extract of Dioscorea opposita can significantly inhibit Cu2? +? Yes, γ? Denaturation of globulin? It shows that it has anti-arthritis effect. The water extract of Dioscorea opposita can also eliminate urinary protein and inhibit the production of mutant cells. Yam was originally called yam. Make up without delay. Not hot or dry? It can tonify spleen and stomach yin, while tonifying lung and kidney can only be used as an auxiliary product. Chinese yam is often used in many anti-aging prescriptions.