Sweet potato has been used by nutritionists as a kind of medicine and food with balanced nutrition. Its calories are only one-third of the calories produced by the same weight of rice, and it contains almost no fat and cholesterol. Eat sweet potatoes is good for human health, how to eat better?

Will eat sweet potatoes will not make people fat

According to scientific research, eating sweet potatoes will not make people fat, on the contrary sweet potatoes is still an ideal diet food. Its calorie content is very low, much lower than normal rice, so you don't have to worry about gaining weight after eating, but you can lose weight. Sweet potatoes also contain an estrogen-like substance that has a protective effect on protecting human skin and delaying aging.

Therefore, many foreign women treat sweet potatoes as beauty foods. Sweet potatoes are sweet and crunchy and can be used as a substitute for fruit; cooked and soft, eaten in the mouth and sweet in the heart. It can serve as both a staple food and a vegetable. Steamed, boiled, fried, fried, eat a lot, once skillfully cooked, it can also become a delicacy.

The effect and function of sweet potato

1. Sweet potato is good for the heart

Sweet potatoes are rich in potassium, beta-carotene, folic acid, vitamin C, and vitamin B6. These five ingredients help prevent cardiovascular disease. Potassium helps the body's cellular fluids and electrolytes balance, maintaining normal blood pressure and heart function. Beta-carotene and vitamin C have anti-lipid oxidation and prevent atherosclerosis. Supplementation of folate and vitamin B6 helps reduce blood homocysteine ​​levels, which damage the arteries and are an independent risk factor for cardiovascular disease.

2. Sweet potato prevents emphysema

An animal experiment at the University of Kansas found that smoking rats have lower levels of vitamin A in the body and are prone to emphysema, while those who smoke in foods rich in vitamin A have a significantly lower incidence of emphysema. Why do some long-term smokers live above the age of 90 but do not experience emphysema? It may be related to the rich vitamin A content in their daily diet. The researchers suggest that those smokers or passive smokers are advised to eat vitamin A rich foods such as sweet potatoes daily to prevent emphysema.

3. Sweet potato has anti-cancer effect

The top 20 list of cancer-fighting vegetables announced by the National Cancer Research Center of Japan: sweet potatoes, asparagus, cauliflower, cabbage, broccoli, celery, bell pepper, carrots, cauliflower, leeks, leeks, indigo, mustard, tomatoes, Onions, garlic, cucumber, Chinese cabbage, etc. Among them, sweet potatoes ranked first. In addition, Japanese doctors found that the cooked sweet potato had a higher tumor suppressing rate than the raw sweet potato through a diet survey of 260,000 people. After investigating the hometown of centenarians in the western part of Guangxi, Chinese medical workers discovered that the longevity old people in this area share a common characteristic: they are accustomed to eating sweet potatoes daily and even use them as staple foods.

Eating sweet potatoes helps maintain normal folic acid levels in the body. Too low folic acid levels in the body can increase the risk of cancer. The high content of dietary fiber in sweet potato promotes gastrointestinal motility and prevents constipation and colorectal cancer.

First, it is best eaten at noon

For the time of day, it is best to eat sweet potatoes at noon, because after eating sweet potatoes, it takes 4-5 hours to absorb in the human body. At the same time, the afternoon sun just happens to promote the absorption of calcium. Eat sweet potatoes at night, sugar more, the body can not absorb a moment, easy to swell.

Second, do not eat together with sweets

Sweet potatoes can't be eaten with something that's too sweet, because sweet potatoes themselves are sweet. If they are added together with sweets, they increase the likelihood of gastroesophageal reflux.

Third, roasted sweet potatoes do not eat with skin

The hot roasted sweet potatoes are sweet and delicious, and some of them are baked with "sugar oil." The charred coke of sweet potato skin is welcomed by everyone. Many people eat it together with the skin. However, experts pointed out that it is best not to eat roasted sweet potatoes with skin. Sweet potato contaminated with Alternaria purpurea is not easily discernible after baking, so sweet potatoes with black spots or scorched beans should not be eaten, which may cause poisoning. At the same time, although most of the roasted sweet potatoes on the street now have ovens, many of them are made from coal. When coal is burned, it will produce a lot of harmful substances such as sulfur dioxide, which is harmful to health.

Four, fasting should not eat sweet potatoes

Due to the high sugar content of sweet potatoes, fasting will produce a large amount of gastric acid, and when too much stomach acid, it will stimulate the gastric mucosa and cause acid reflux, which will make people feel heartburn. At the same time, sweet potatoes also contain an oxidase that produces a large amount of carbon dioxide gas in the gastrointestinal tract, which can easily cause bloating, snoring and other symptoms.

It should be noted that since it is not advisable to eat too many sweet potatoes at one time, the consumption method of sweet potatoes is also very particular. First of all, raw sweet potatoes are not good, because the cell membrane of starch in raw sweet potatoes has not been destroyed by high temperature and it is difficult to digest in human body. Second, sweet potatoes should not be eaten alone. Sweet potatoes and rice noodles can be eaten together and their consumption can be controlled once. Secondly, when you eat sweet potatoes, you can use some pickles and salty soups as neutralizers. In addition, sweet potatoes can be soaked with a small amount of alum solution and iodine brine, and then processed. Into a variety of cooked food.

Yellow Waxy Corn Kernels

The most common waxy and sweet corn market, waxy corn has higher nutrient content than ordinary corn, containing 70-75% starch (and almost all amylose), more than 10% protein, 4-5% fat and 2 % Of multivitamins have more grains, VA, VB1, and VB2 than rice with the highest content of protein, fat and VB2. Yellow corn also contains carotenoids, such as rice and wheat. The molecular weight of waxy corn starch is more than 10 times smaller than that of ordinary corn. The starch makes glutinous rice sticky and softer than ordinary hard corn. Its digestibility is more than 20% higher than that of ordinary corn, and it is suitable for people with irregular teeth. At the same time, the content of amylose (a kind of polysaccharide) is very high, which is not suitable for diabetics.

Waxy corn is also called sticky corn. The grains have rough, waxy endosperm, similar to shiny, transparent grains, such as hard and dented corn. Its chemical and physical properties are controlled by a recessive gene located on chromosome 9. 100% of the starch in the endosperm is amylose.

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