2. Nutritional value of sweet potato.

Sweet potato tuber contains 60%-80% water, 10%-30% starch, about 5% sugar and a small amount of protein, oil, cellulose, hemicellulose, pectin and ash. If 2.5Kg fresh sweet potato is converted into 0.5Kg grain, its nutritional components are higher than rice and flour except fat. In addition, sweet potato is rich in vitamins (e, B 1, B2, c), and its starch is easily absorbed by human body.

3. The benefits of sweet potato

"Biography of Sweet Potato" also said: Sweet potato cooked food can cure diarrhea caused by wine wet into the spleen. Sweet potato suitable constipation is more common in obese people, people with yellow complexion, uncomfortable stool, dry first and then swollen. Eating sweet potatoes often can make the stool smooth, so "Materia Medica Seeking the Original" says that sweet potatoes can expand the stomach and relieve constipation. Sweet potato has a strong diuretic effect, but it has a good adjuvant treatment effect on mild edema of obese people.

"Lingnan Medicine Collection Record" says: vinegar boiling can cure the whole body edema. It is also recorded in the literature of traditional Chinese medicine that sweet potato can keep out the cold and benefit the color. In recent years, people pay more and more attention to the health value of sweet potato. Nutritionists have found that sweet potatoes are rich in nutrients such as vitamin B, vitamin C and lysine. Japanese scholars found that sweet potato is rich in mucin, which is a mixture of polyketone and protein. It can keep the lubrication of digestive tract, respiratory tract and joint cavity, keep the elasticity of cardiovascular system, prevent arteriosclerosis and delay aging.

Is sweet potato a hair care product? What are the practices of sweet potato?