Because of its rich nutrition, it has been regarded as a good tonic with good quality and low price since ancient times. Can be used as staple food, vegetables, and snacks such as candied haws.
China is mainly produced in Bo 'ai, Qinyang, Wuzhi, wen county and other places in Henan Province, and 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 kinds of yam cultivated in China: common yam and sweet potato. Common yam tuber is smaller, among which "Jiaoban Potato" in Sichuan and other places, Huai Yam in Huai County of Shaanxi Province and Huai Yam in Cheng Nan of Jianghan are the most famous.
1, used for skin: make skin smooth, reduce wrinkles and eliminate pigment spots. It has obvious curative effect on facial acne and rough skin. In addition, it also has the ability to absorb ultraviolet rays, and its extract can also achieve sun protection and ultraviolet protection when added to cosmetics.
In addition, coix seed is a kind of food. Boiling or frying is more conducive to the absorption of the stomach. People who often feel tired and have no strength can eat more. Coix seed is rich in protein decomposing enzyme, which can soften skin cutin. Long-term use is also effective for those with wart, rough and unsmooth skin.
3. Used for hair: it has the functions of nourishing hair, preventing hair loss and making hair smooth and soft.
4. Conducive to detumescence, invigorating spleen and removing dampness, relaxing tendons and removing arthralgia, clearing away heat and expelling pus, etc. It is a commonly used diuretic and osmolytic drug.