1, high content of selenium and zinc, anti-oxidation and cancer prevention.
The content of selenium and zinc in purple sweet potato is 3 ~ 8 times higher than that in common sweet potato, which is the key to its ranking first in anti-cancer food. Selenium is an essential component of several antioxidant enzymes, which can prevent cancer. By eliminating lipid peroxide, it can block the pathogenic effect of reactive oxygen species and free radicals, thus delaying aging, preventing the occurrence of some chronic diseases, and having anti-AIDS effect.
Zinc is also a component or activator of many antioxidant enzymes, which can prevent free radical damage and maintain normal immune function. Zinc can also maintain the stability of cell membrane and reduce toxin absorption and tissue damage. The regulatory function of zinc in tissue metabolism can regulate the synthesis and metabolism of protein, regulate immune function, and regulate hormones, such as participating in the synthesis and release of insulin and the secretion of prostaglandin. Zinc is also an essential factor in DNA synthesis, participating in the division and proliferation of all cells and promoting growth and tissue regeneration.
2, rich in potassium and iron, for the body to send oxygen, stable blood pressure.
In addition to the nutritional advantages of common potatoes, purple potatoes are rich in micronutrients such as potassium and iron, which significantly improves their health effects. Especially for modern people to prevent and treat chronic non-communicable diseases, it is of great significance. Potassium is one of the most important nutrients in human body, and plays a vital role in maintaining the normal metabolism of sugar and protein. At the same time, due to its functions of relaxing blood vessels and promoting sodium excretion, potassium plays an indispensable leading role in the process of stabilizing blood pressure; However, iron participates in the formation and maturation of cells in human body and maintains normal hematopoietic function. Iron combines with protein in vivo to form hemoglobin and myoglobin; Deliver oxygen to various tissues and organs of the body.
3, rich in anthocyanins, preventing various diseases.
Anthocyanin has high health efficacy and no side effects. The color of purple sweet potato comes from anthocyanin, which is a natural and powerful free radical scavenger. A large number of studies have confirmed that anthocyanins have preventive and therapeutic effects on 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, thus protecting brain tissue and reducing the side effects of antibiotics on human body.
4, the cellulose content is high, which promotes digestion.
Purple sweet potato has a high content of cellulose, which can increase the volume of feces, promote gastrointestinal peristalsis, clean up mucus, gas accumulation and putrefaction in intestinal cavity, discharge toxic substances and carcinogens in feces, keep the stool smooth, improve the digestive tract environment and prevent gastrointestinal diseases.