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Function and function of sweet potato

Function and function of sweet potato

4hw.org: sweet potato is the most traditional food crop in our country, and also the favorite food we have since childhood. In winter, sweet potato porridge and baked sweet potato are delicious food that has accompanied us for winter. It is understood that the nutritional value of sweet potato is very high, eating sweet potato is very beneficial to the body.

Nutritional function of sweet potato:

1. Nutritional value of sweet potato carotene

Vitamin A has the name of "eye guard". Vitamin A is transformed from carotene. Sweet potato is rich in carotene, which can provide rich vitamin A. the content of vitamin A can be as high as 40mg / 100g fresh sweet potato. After carotene is absorbed by human body, it can be converted into vitamin A. Vitamin A can maintain normal visual function.

2. Edible fiber

The fiber of white sweet potato is 10 times as much as that of rice flour. It is fine in texture and does not hurt the stomach. It can accelerate the peristalsis of digestive tract, help defecate, clean the digestive tract, shorten the retention time of toxic substances in food in the intestine, reduce the self poisoning caused by constipation, reduce the concentration of intestinal carcinogens, and prevent hemorrhoids and colorectal cancer. At the same time, cellulose can absorb part of glucose, reduce the sugar content in the blood, and help prevent diabetes.

3 carbohydrate and protein conjugates

White sweet potato is rich in mucoprotein, which is a mixture of polysaccharide and protein. It has a special protective effect on human body. It can keep the lubrication of digestive tract, respiratory tract, joint cavity and membrane cavity and the elasticity of blood vessels. Because this material can prevent the Arteriosclerosis Caused by the deposition of material on the arterial wall, it can prevent the atrophy of connective tissue of liver, kidney and other organs, and it can reduce Slow down the aging of human organs and improve the body immunity. White sweet potato also contains glycoprotein, which has good anti mutation, hypolipidemic and immunity enhancing effects.

4 potassium

White sweet potato has high potassium content, which can reduce the disadvantages caused by excessive salt intake. Potassium is also an important factor in protecting the heart. As potassium is an alkaline element, the pH value of white sweet potato is 10.31, which is a physiological alkaline food and has the function of neutralizing body fluids. Proper consumption of white sweet potato is conducive to maintaining the acid-base balance of blood, and is beneficial to people's health, development and intellectual development.

5 anticancer substances

There is a kind of physiological active substance called 'deoxyepiandrone' in the white sweet potato, which can prevent colon cancer and breast cancer, and greatly promote the activity of brain cells and endocrine glands, so it can delay the intellectual decline and increase the resistance of human body. Contains more carotene, lysine, plant fiber, dehydroepiandrosterone, can prevent cancer and breast cancer.

Health function of sweet potato:

1. Slimming and beauty

Does eating sweet potato make people fat. According to scientific research, eating sweet potato will not make people fat, on the contrary, sweet potato is an ideal diet food. It's very low in calories, much lower than ordinary rice, so you don't have to worry about getting fat after eating, but it can play a role in reducing weight. Sweet potato also contains a kind of estrogen like substance, which can protect human skin and delay aging. Therefore, many foreign women regard sweet potato as beauty food.

2, anticancer

The most anticancer nutrients in diet are beta - carotene, vitamin C and folic acid, which are rich in sweet potato. A small sweet potato can provide twice the amount of vitamin A, one third of vitamin C and about 50 micrograms of folic acid needed by human body every day, and the content of dietary fiber is higher than that of a bowl of oatmeal. Eating sweet potatoes often helps to maintain normal folate levels in the human body. Too low folate content in the body will increase the risk of cancer. The high content of dietary fiber in sweet potato can promote gastrointestinal peristalsis, prevent constipation and colorectal cancer.

3. Good for the heart

Sweet potato is rich in potassium, carotene, folic acid, vitamin C and vitamin B6, all of which can help prevent cardiovascular disease. Potassium helps balance the body's cell fluids and electrolytes, maintaining normal blood pressure and heart function. &Beta, - carotene and vitamin C have the effects of anti lipid oxidation and prevention of atherosclerosis. Folic acid and vitamin B6 supplementation can help to reduce the level of homocysteine in the blood, which can damage the arteries and vessels, and is an independent risk factor for cardiovascular disease.

4. Prevention of emphysema

Why some long-term smokers live to be over 90 years old without emphysema may be related to the rich vitamin a content in their daily diet. The researchers recommend that smokers or passive smokers eat vitamin a rich foods such as sweet potatoes every day to prevent emphysema.

5. Antidiabetic effect

Japanese researchers found that the insulin level in the blood of diabetic obese rats decreased by 26% and 60% respectively after eating white skin sweet potato for 4 weeks and 6 weeks, and found that sweet potato can effectively inhibit the increase of blood glucose level after oral glucose in diabetic obese rats; eating sweet potato can also reduce the levels of triglycerides and free fatty acids in diabetic rats.

6. Function of regulating blood glucose

The dietary fiber contained in sweet potato is very beneficial to promote intestinal peristalsis and prevent constipation, and can also delay the rise of blood sugar after meal. Selenium in sweet potato can help regulate blood sugar.

Hypoglycemic method: diabetic patients can take sweet potato as the main food, because of its high carbohydrate content, so eating 50g sweet potato will reduce the corresponding main food.

Precautions for sweet potato consumption:

Sweet potato contains dietary fiber, carotene, vitamin A, B, C, e, potassium, iron, copper, selenium, calcium, etc. it has high nutritional value and is the champion of the "ten best vegetables" selected by the World Health Organization. However, it should be noted that sweet potatoes are also dainty to eat.

1. The sweet potato must be cooked thoroughly before eating, because the starch particles in the sweet potato are not damaged by high temperature and difficult to digest.

2. Sweet potato contains an oxidase. If you eat too much sweet potato, it will make you bloated, hiccup and fart. Sweet potato has a high sugar content. Eating too much can stimulate the secretion of gastric acid, which makes people feel 'heartburn'. The contraction of the stomach is strengthened by the stimulation of excessive gastric acid. The stomach acid can flow back to the feeding tube and produce acid vomiting water. When eating sweet potato, it's best to match it with salted vegetables, which can effectively inhibit stomach acid.

3. In addition, sweet potato has a lot of sugar, which can't be fully absorbed by the body for a while, and the rest of it is easy to ferment in the intestine, causing abdominal discomfort. According to traditional Chinese medicine, those who suffer from dampness and stagnation of Qi should eat sweet potato carefully.