The nutritive value of sweet potato:

1. carotene

Vitamin A is known as "eye small guards", if the body lacks it, eyes feel weak light capacity will be reduced, ability to adapt to the dark will be diminished, serious when susceptible to night blindness. Vitamin A is transformed from carotene. [6], besides carrot, sweet potato is also rich in carotene. It can provide rich vitamin A, vitamin A content can be as high as 40mg/100g, fresh white sweet potato, carotene is absorbed by human body, it can be transformed into vitamin A. Vitamin A can maintain normal visual function. Lack of vitamin A is a serious health problem. There is a widespread "potential hunger" in China, that is, the lack of various micronutrients. 55% of the people lack vitamin A, while eating white sweet potato can avoid vitamin A deficiency. The United Nations has included white potato as an important plan to address vitamin A deficiency in African children and women (2001, CIP).

2. edible fiber

10 times the white potato fiber containing equivalent flour, its delicate texture, not to hurt the stomach, can accelerate gastrointestinal peristalsis and help defecation, cleaning the digestive tract, shorten the residence time of toxic substances in food in the intestine, reduce constipation caused by body poisoning, reduce intestinal carcinogen concentration, prevention hemorrhoids and colon cancer. At the same time, cellulose absorbs a portion of glucose, reducing the sugar content in the blood and helping to prevent diabetes.

3. sugar and protein binding

White potato contains abundant mucus protein, which is a kind of polysaccharide and protein mixtures, has a special role in the protection of the human body, can keep the digestive tract, respiratory tract, articular cavity, cavity lubrication and vascular elasticity, because this kind of material can prevent the material in the artery wall deposition caused by arteriosclerosis, can to prevent the liver and kidney of connective tissue atrophy, can slow down the aging of human organs, improve body immunity. White gutas also contain glycoproteins, which have good anti mutation, lower blood lipid and enhance immunity.

4. K

White sweet potato has high potassium content, which can reduce the disadvantages caused by excessive intake of salt. Potassium is an important factor in the protection of the heart. As potassium is an alkaline element, the pH value of white sweet potato is 10.31. It is a physiological basic food and has the effect of neutralizing body fluid. The human body is an acid-base balance of the body, the normal body fluids weakly alkaline, blood acidification, human limbs cold, cold, wound healing is not easy, serious when can directly affect the brain and nerve function (such as memory, thinking ability is weakened or mental illness) and is much slower, a hotbed of sexually transmitted diseases the. Therefore in the food rich today, can not eat meat, rice etc. this kind of acidic food, appropriate to eat white potato, helps maintain blood acid-base balance, is beneficial for the healthy development, and intellectual development of people.

5. anticancer substance

There is a physiological active substance called "deoxyepiandrosterone" in white sweet potato, which can prevent colon cancer and breast cancer, promote the vitality of brain cells and endocrine hormones, and therefore can slow down the intelligence decline and increase the resistance of human body. It contains more carotene, lysine, plant fiber, and dehydroepiandrosterone, which can prevent cancer of the colon and breast.

6. heat

Unit heat (edible part of heat)

1 (small) sweet potato (Hong Xin) (130 grams, edible part 117 grams) 116 calories [10]

1 (big) sweet potato (Hong Xin) (500 grams, edible part 450 grams) 446 calories

Half (big) sweet potato (Hong Xin) (250 grams, Edible Part 225 grams) 223 calories

Standard (100 grams)