2. Lose weight: The tender leaves at the stem tip of purple sweet potato are rich in vitamins, protein, trace elements, edible fiber and soluble non-oxidizing substances. Regular consumption of purple has many effects such as weight loss, bodybuilding, fitness and cancer prevention. Therefore, purple sweet potato has a good health care function from the tender leaves at the tip of the stem to the potato pieces, and it is the first health care food among green, pollution-free and organic foods at present.
3. Antioxidant effect: 2 1 alcohol extract from sweet potato meat was tested. The results showed that anthocyanins contained in purple sweet potato had the strongest ability to scavenge peroxide free radicals, and this ability increased with the increase of total phenols in purple sweet potato. At the same time, anthocyanin in purple sweet potato can effectively prevent lipid peroxidation caused by linoleic acid automatic oxidation.
4, anti-cancer, anti-cancer: Purple sweet potato is also rich in protein, 18 amino acids necessary for human body, 8 vitamins such as vitamins A, B and C, and 10 natural minerals such as phosphorus and iron. Among them, iron and selenium are most abundant.
5. Selenium and iron are essential elements for anti-fatigue, anti-aging and blood-enriching. In particular, selenium is known as the "king of cancer", which is easily digested and absorbed by human body, and can stay in serum to repair myocardium, enhance immunity, eliminate free radicals in the body, inhibit the division and growth of cancer cells, and prevent the occurrence of cancer diseases such as gastric cancer and liver cancer.
6. Prevention of cardiovascular and cerebrovascular diseases: Sweet potato is rich in potassium, radish, folic acid, vitamin C and vitamin B6, all of which help to prevent cardiovascular and cerebrovascular diseases. Potassium contributes to the balance of liquid and electrolyte in human cells and maintains normal blood pressure and heart function.