The advantage of convenient transportation now is that more food is eaten. So some people will tangled in the mall, in the end is good sweet potato or purple sweet potato. After all, it is the same species. The most important thing is that the nutritional value of the two is the same? Is there a difference between the two? The text is answered for everyone.
Sweet potatoes and purple sweet potatoes have high nutritional value
Purple sweet potato has high nutritional value.
Purple sweet potato is rich in selenium and anthocyanins. Selenium is an anti-cancer substance, and anthocyanin is an organic active antioxidant that is anti-cancer and anti-aging.
Functions of specific anthocyanins: Anthocyanins are widely found in purple sweet potatoes, grapes, blood oranges, red cabbage, blueberries, eggplant skin, cherries, red oranges, red berry, strawberry, mulberry, hawthorn, basil, Black (red) rice, morning glory and other plant tissues.
Anthocyanins bring many benefits to the human body. Fundamentally, anthocyanins are powerful antioxidants that protect the body from harmful substances called free radicals. Anthocyanins also increase blood vessel elasticity, improve circulation and skin smoothness, inhibit inflammation and allergies, and improve joint flexibility.
The difference in nutritional value between sweet potato and purple sweet potato
Sweet potato is an anti-cancer star in food. In addition to the nutrients contained in sweet potatoes, it is also rich in selenium and anthocyanins. Among them, selenium is known as the “anti-cancer king†and is easily absorbed by the body. It can also stay in the serum, enhance the body's immunity, remove free radicals in the body, inhibit the growth of cancer cells, and prevent the occurrence of cancer. Anthocyanins are the most direct, effective, and safe free radical scavengers found by the scientific community to prevent and treat diseases and maintain human health. Its ability to scavenge free radicals is 20 times that of vitamin C and 50 times that of vitamin E. It has preventive and therapeutic effects on over 100 diseases.
The purple sweet potato is also called black potato, and its purple and deep purple potatoes are very popular in the international market. It is rich in protein, 18 kinds of amino acids that are easily digested and absorbed by the human body, 8 kinds of vitamins such as vitamins A, B and C, and 10 kinds of natural mineral elements such as phosphorus and iron. It is an essential element in the body's anti-fatigue and blood-supplementation. Like sweet potatoes, purple sweet potatoes are also rich in cellulose, which can promote detoxification, improve the digestive tract environment, and prevent gastrointestinal diseases.
What health effects do sweet potatoes have?
Sweet potato has anti-cancer effect
The most nutritious substances in the diet are β-carotene (vitamin A precursor), vitamin C and folic acid, and the three are rich in sweet potato. A small sweet potato (about 2 two weights) can provide 2 times the amount of vitamin A needed by the human body per day, one third of the required amount of vitamin C per day and about 50 micrograms of folic acid; the content of dietary fiber is higher than that of a bowl of oatmeal .
The antioxidant effects of β-carotene and vitamin C help to resist the damage of oxidative stress to DNA, and play a role in anti-cancer.
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.
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. Folic acid supplementation and vitamin B6 help reduce blood homocysteine ​​levels, which damage the arteries and are an independent risk factor for cardiovascular disease.
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 some long-term smokers live above the age of 90 but do not have emphysema 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.
Sweet potato has anti-diabetic effect
Japanese researchers found that obese diabetic rats in the white-sweet sweet potato after 4 weeks, 6 weeks after the blood insulin levels were reduced by 26%, 60%; and found that sweet potato can effectively inhibit diabetes after oral administration of glucose glucose levels in obese rats High; eating sweet potatoes can also reduce the levels of triglyceride and free fatty acids in diabetic rats.
Studies have shown that white sweet potatoes have a certain anti-diabetic effect. A clinical study at the University of Vienna, Austria, found that patients with type 2 diabetes have improved insulin sensitivity after taking white sweet potato extract, which helps control blood sugar.
What health functions of purple sweet potato
Rich in anthocyanin to prevent many diseases
Anthocyanins are highly effective and have no side effects. The color of purple sweet potato comes from anthocyanins, which are naturally powerful free radical scavengers. A large number of studies have confirmed that anthocyanins have preventive and therapeutic effects on over 100 diseases, and their ability to scavenge free radicals is 20 times that of vitamin C and 50 times that of vitamin E. Anthocyanins can scavenge free radicals through the blood-brain barrier, thereby protecting brain tissue and reducing the side effects of antibiotics on the human body.
High levels of selenium and zinc, antioxidant, prevent cancer
Zinc, which is also a component or activator of many antioxidant enzymes, has the effect of preventing free radical damage and maintaining normal immune function. Zinc can also maintain cell membrane stability, reduce toxin absorption and tissue damage. Zinc has a regulatory function in tissue metabolism that regulates protein synthesis and metabolism, modulates immune function, and regulates hormones, such as the synthesis and release of insulin, and participates in the prostaglandin secretion process. Zinc is also an essential factor in DNA synthesis and participates in the division and proliferation of all cells, promoting growth and tissue regeneration.
Prevent gastrointestinal diseases
High cellulose content promotes the high cellulose content of digested purple sweet potatoes. This type of substance can increase the volume of feces, promote gastrointestinal motility, clean up the retained mucus, gas accumulation and putrefaction in the intestinal lumen, and excrete toxic substances and carcinogens in the stool. Maintain smooth bowel movements, improve the digestive tract environment, and prevent gastrointestinal diseases.
Weight loss, bodybuilding and fitness against cancer
Rich in vitamins, bodybuilding, fitness purple sweet potato stem tip leaves are rich in vitamins, proteins, trace elements, edible fiber and soluble non-oxidized substances, regular consumption has weight loss, fitness and fitness anti-cancer effects.
Smooth blood pressure
Rich in potassium and iron, the body oxygen, smooth blood pressure.
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