Sweet potato also has a name called sweet potato. The original name of sweet potato is sweet potato, which is commonly known as sweet potato in the south. In Northeast dialect, sweet potato, red taro, sweet potato, fennel taro, purple potato, sweet potato, Zhu potato, golden potato, etc. It is also known as sweet potato, sweet potato, sweet potato and white taro.

Sweet potatoes are mainly distributed in China, such as Beijing, Shandong, Henan, Tianjin, Hebei, Northeast China, Inner Mongolia, Yunnan, Sichuan, Hubei, Gansu, Anhui, Fujian, Shaanxi, Hunan, Guangdong, Jiangsu and Jiangxi. The main producing areas in China are: Sixian County, Anhui Province (the hometown of sweet potato in China), Lulong, Hebei Province, Liancheng, Fujian Province, Shangqiu, Dengzhou, Sishui, Shandong Province, Nanchong, Sichuan and other regions.

Nutritional value of sweet potato

Sweet potato is a natural nourishing food with complete nutrition, which contains protein, fat, polysaccharide, phosphorus, calcium, potassium, carotene, vitamin A, vitamin C, vitamin E, vitamin B 1, vitamin B2 and 8 kinds of amino acids. According to the analysis of scientists, its protein content is more than 7 times that of rice; The content of carotene is 3.5 times that of carrot; The content of vitamin A is 100 times that of potato; The contents of sugar, calcium, vitamin B 1 and vitamin B2 are higher than those of rice and flour.

The edible part of each 100g fresh potato block contains 29.5g of carbohydrate, 0.2g of fat, 20mg of phosphorus, 0.8mg of calcium/kloc-0 and 0.4g of iron. These substances play an important role in promoting the activity of human brain cells and secreting hormones, enhancing human disease resistance, improving immune function, and delaying mental decline and body aging. The Japanese Ministry of Health has listed it as an important food for dietotherapy.

The fat content of sweet potato is extremely low (0.2%), which is incomparable to other foods. But the content of unsaturated fatty acids is very rich. Take it as a staple food and eat it once a day. Its rich cellulose makes people feel "full of wine and food" and relaxed. At the same time, it can not only prevent the absorption of fat and cholesterol in the intestine, but also decompose the cholesterol in the body and promote the metabolism of lipids, which can effectively prevent the body from overnutrition and resist the occurrence of obesity, thus achieving the purpose of losing weight.

The above contents refer to:

Baidu Encyclopedia-Sweet Potato (Leguminosae, Potatoes, Herbs and Vines)

Baidu Encyclopedia-Sweet Potato (Convolvulaceae of Tubular Flowers)