What's with the purple sweet potato? Thank you, everyone.

Purple sweet potato is rich in nutrition and has special health care function, ranking first in the anti-cancer vegetables recently announced by Japan National Vegetable Cancer Research Center. It contains about 20% of protein, and contains 18 kinds of amino acids easily digested and absorbed by human body, including 8 kinds of vitamins such as vitamin C, vitamin B and vitamin A, and 10 kinds of mineral elements such as phosphorus and iron. More importantly, it contains a large number of anthocyanins with peculiar efficacy and high medicinal value. According to the book Health Research, French scientist Dr. Masquerel found that anthocyanins are natural. And obtained a patent in the United States (patent number: 4.698.360). Experiments by scientists from all over the world have proved that anthocyanins have preventive and therapeutic effects on 100 diseases, and are regarded as the seventh essential nutrient after water, protein, fat, carbohydrates, vitamins and minerals. Anthocyanin is the most direct, effective and safest free radical scavenger for preventing and treating diseases and maintaining human health. Its ability to scavenge free radicals is 20 times that of vitamin C and 50 times that of vitamin E. Anthocyanin has a small molecular structure and is the only substance that can scavenge free radicals through the blood-brain barrier to protect brain cells, and at the same time, it can reduce some harm of antibiotics to human body. Purple sweet potato will become one of the main raw materials of anthocyanin. Purple sweet potato has high cellulose content, which can increase the volume of feces, promote gastrointestinal peristalsis, clean up mucus, gas accumulation and corruption in intestinal cavity, discharge toxic substances and carcinogens in feces, keep defecation unobstructed, improve digestive tract environment and prevent gastrointestinal diseases. Zinc, iron, copper, manganese, calcium and selenium in purple potato are all natural, and the content of iron and calcium is extremely high. Selenium and iron are essential elements for anti-fatigue, anti-aging and blood-enriching, and have good health care functions. Selenium is also the "king of cancer", which is easily absorbed by human body, effectively stays in serum, repairs myocardium, enhances immunity, eliminates free radicals that produce cancer in the body, inhibits the synthesis of cancer DNA and the division and growth of cancer cells, and prevents the occurrence of diseases such as gastric cancer and liver cancer. Purple sweet potato stem tip leaves are rich in vitamins, protein, trace elements, edible fiber and soluble non-oxidizing substances. Regular consumption has the functions of losing weight, bodybuilding, fitness and cancer prevention. Therefore, purple sweet potato has good health care function from tender leaves at the tip of stem to potato pieces, and it is the first health care food among pollution-free, green and organic foods at present. Japanese purple potato king, a rare black potato, is a new black potato variety introduced from Japan. The leaves are dark green, the top three leaves are purplish red, the leaves are heart-shaped, shallowly split and single-notched, the petiole veins are all green, the vine length is about 1 m, the potato is spindle-shaped, the potato skin is smooth, the purple is black and bright, and the potato flesh is deep purple. After the potato slices are cut, purple slurry flows out and dyed purple immediately after rubbing by hand, which is the best variety to extract purple pigment. It is purple-black, sweet and sandy, delicious, rich in anti-cancer substances such as selenium and iodine, and its nutritional content is several times higher than other sweet potatoes. It is the first-class health food for urban and rural residents and hotels. If it is packaged in a 1-5 kg color box or color bag and sold in a supermarket, the price per kg is 10-20 yuan, which is 0/0 times that of ordinary sweet potatoes. Now it has been processed into vermicelli or noodles with this variety, which is very popular in the market and has considerable benefits. Purple sweet potato king is an early-maturing variety, which forms tubers 50 days after planting, with more than 500 grams 100 day, which is beneficial to seize the market in the off-season. A single plant produces 4-6 potato chips with uniform size and each chip weighs 200-800g. Average yield per mu: 4,000-5,000 kg of spring potato and 3,000 kg of summer potato, which is 50%- 100% higher than that of American black potato and 2-3 times that of Japanese Chuanshanzi. Strong disease resistance, storage resistance, good germination and high emergence rate. Japanese purple potato king, from its early maturity, high yield, stress resistance, quality, use and other comprehensive analysis, is indeed a characteristic variety with great development prospects. Nowadays, black food is very popular. If it is developed first, it will have good economic benefits. The cultivation techniques are the same as other sweet potato varieties, with 3000-3500 plants per mu in spring and 4000 plants in summer. In the middle and late stage, fertilizer and water management and foliar fertilization should be strengthened to prevent premature aging. Teach you to make purple potato porridge, which is very sweet and delicious; Chop two purple potatoes, add some rice and rock sugar, put them all into the rice cooker and open them after 45 minutes. It smells really good. The aroma of purple potato melts into porridge, which has a unique flavor. I like the color of purple potato porridge very much:)