How many types of yam are there

There are various types of yams, the most common one is the iron stick yam, which is actually a more precious type of yam. It is called the iron stick yam mainly because of its slender shape. After undergoing certain processes, it can be used as a Chinese medicinal material. It tastes more delicious than other yams. The most important thing is that its medicinal value is very outstanding and can treat many diseases.

Yam, also known as Dioscorea batatas, wild yam, mountain yam, Huaishan, and white yam, is an herbal medicine included in the "Chinese Materia Medica". Its medicinal source is the dried rhizome of the Dioscoreaceae plant Dioscorea batatas.

Iron Stick Yam is one of the many varieties of yam. There are rust-like marks on the Iron Stick Yam, hence the name Iron Stick Yam. Iron stick yam can be divided into two types according to different geographical locations: sandy soil yam near the Yellow River and loess soil yam.

Yam is a precious Chinese medicinal material, highly praised by doctors of all dynasties as a factor of longevity and a good medicine and food that can be used both as medicine and food. As a traditional Chinese medicine, it can be made into a variety of pills, such as Liuwei Dihuang Pills, for people to consume. As a food vegetable, it is delicate and smooth with unique flavor, such as sweet potato with sugar and sweet potato with dates paste. Yam contains saponins, mucus, cholecalciferol, yamine, starch, glycoprotein, free amino acids, polyphenol oxidase, vitamin C, iodine, 16 kinds of amino acids, as well as various trace elements such as selenium, iron, copper, zinc, manganese, and calcium.

Efficacy Introduction

Yam has been eaten by humans since ancient times and is one of the earliest plants eaten by humans. As early as in the Tang Dynasty, there was a famous line in the poems of the great poet Du Fu: "Eat lots of yam to fill the stomach." The yam tuber is thick, juicy, sweet, soft and sticky, and is delicious whether eaten raw or hot. According to the test results of Shandong Academy of Agricultural Sciences on yam, its tubers contain an average of 14.48% crude protein, 3.48% crude fiber, 43.7% starch, 1.14% sugar, 2.62% potassium, 0.2% phosphorus, 0.2% calcium, 0.14% magnesium, 5.51% ash, 53.57ppm iron, 29.22ppm zinc, 10.58ppm copper, and 5.38ppm manganese. Of the 18 amino acids needed by humans, yam contains 16.

1. Strengthen the spleen and stomach, aid digestion: Contains amylase, polyphenol oxidase and other substances, which are beneficial to the digestion and absorption function of the spleen and stomach. It is a medicinal and food product that can nourish the spleen and stomach. The copper ions, connective tissue and calcium in iron stick yam are of great help to human development, and have a very high effect on tendon and bone injuries, osteoporosis, and tooth loss. It has a good effect on frostbite, diabetes, hepatitis, diarrhea in children, enuresis, infant indigestion, ulcerative stomatitis, and tuberculosis. It has health care effects such as enhancing human immunity.

2. Nourishes the kidney and improves the essence: "Reading the Materia Medica" said: "Yam can nourish the kidney and replenish the essence. If the essence is sufficient, the yin will be strong, the eyes will be bright, and the ears will be sharp." Meng Shen, a food doctor in the Tang Dynasty, once said: "Yam is good for men and helps the yin strength." "Bencao Qiuzhen" pointed out that yam "can cure nocturnal emission." It can be eaten by people who suffer from nocturnal emission and premature ejaculation due to yin deficiency and hyperactivity of fire or weak kidney qi. The effect will be better if it is taken together with other kidney-tonifying and sperm-solidifying foods, such as water chestnuts and lotus seeds.