Purple potato is also known as black potato, and its tuber flesh has a purple to dark purple color. In addition to the nutrients of ordinary potatoes, it is also rich in selenium and anthocyanins. Anthocyanins have a preventive and therapeutic effect on more than 100 diseases, and are known as the seventh most important nutrient after water, protein, fat, carbohydrates, vitamins and minerals. Anthocyanins are the most direct, effective and safe free radical scavengers found in the scientific community to prevent diseases and maintain human health. The ability to scavenge free radicals is 20 times that of vitamin C and 50 times that of vitamin E. Purple potato is one of the main raw materials for anthocyanins. In recent years, purple potato has been very popular in the international and domestic markets, and its development prospects are very broad.
Purple Potato Powder
Purple potato can be processed into powder after peeling, drying and crushing. Being rich in nutrients, it is an excellent food processing raw material and can be used as the main ingredient of various kinds of cakes. Purple potato powder has abundant anthocyanins, dietary fiber, and also the highest selenium content among the food. It is believed that purple potato is not only nutritious, but also has many unique effects such as kidney-reinforcing, anti-aging, health care, disease prevention and treatment effect. Purple potato powder presents a fresh purple color after rehydration, and has a strong taste of baked potato. It is especially good for the eyes of people who have long faced the computer. Purple potato has a certain health care function from young stem to tuber, which is a preferred organic food with pollution-free and green benefits.
Nutritional Value of Purple Potato
Purple potato is announced rank first among the anti-cancer vegetable lists. It not only has the nutrient composition of ordinary sweet potato, but also has special health care functions. Purple potato is rich in nutrients such as proteins, starch, pectin, celluloses, amino acids, vitamins and various minerals, where the proteins and amino acids can be easily digested and absorbed by the human body. The vitamin A could enhance eyesight and skin mucosal epithelial cells and vitamin C allows the common synthesis of collagen protein and prevents scurvy. The content of lysine, copper, manganese, potassium and zinc is 3-8 times higher than that of ordinary sweet potato. Meanwhile, the content of anticancer iodine and selenium is 20 times higher than other sweet potatoes. Purple sweet potato is also rich in iron and anthocyanins that are natural powerful free radical scavengers.
Functions of Anthocyanin in Purple Potato Extract
Anthocyanin helps prevent a variety of free radical-related diseases, including cancer, heart disease, premature aging and arthritis and reduce the incidence of heart disease and stroke by preventing stress and platelet aggregation caused by smoking. It enhances the ability of immune system to fight carcinogens. Moreover, it could reduce the occurrence of colds and shorten the duration time. By resisting mutation function, it reduces the formation probability of carcinogenic factors. It has anti-inflammatory effects and thus can prevent inflammation including arthritis and swelling. It is also able to alleviate pollinosis and other allergies and enhance arterial, meridian and capillary elasticity. By maintains the normal flexibility of blood cells, it helps red blood cells pass through tiny capillaries, thereby enhancing blood circulation throughout the body, bringing immediate benefits to organs and systems in all parts of the body, and enhancing cell viability. It could prevent high blood pressure by relaxing blood vessels to promote blood circle and inhibiting angiotensin-converting enzyme released by the kidney. As a barrier to protect brain cells, it is capable of preventing the formation of amyloid β protein, glutamate toxicity and free radical attack, thereby preventing Alzheimer’s disease. Skin is smoothed and elasticized by its inhibition of elastase and collagenase, and skin damage due to excessive sun exposure is prevented from the inside and the outside. Anthocyanin also has anti-radiation effect. The anthocyanin color changes due to different pH values. Most anthocyanins have good light, heat and PH stability. Anthocyanins are indispensable for workers with long-term exposure to sunlight or in an electric radiation environment.
Medicinal Value of Purple Potato
- Anti-cancer effect
Purple potato is rich in selenium and iron, which are essential elements for anti-fatigue, anti-aging and blood supplementation. In particular, selenium is called “anti-cancer king” and is easily absorbed by the body. It can be left in serum, repairing myocardium and enhancing immunity. It eliminates free radicals in the body, and inhibits the synthesis of DNA in cancer cells and the division and growth of cancer cells, thus preventing the occurrence of cancers such as stomach cancer and liver cancer.
- Promote gastrointestinal motility
Purple potato is rich in cellulose that promotes gastrointestinal motility to clean up the mucus, gas and decay in the intestinal cavity, discharge toxic substances and carcinogens in the feces, thus keeping the stool clear. It also improves the digestive tract environment, and prevents the occurrence of gastrointestinal diseases.
- Help to lose weight
Eating purple potatoes will be beneficial for losing weight, building body, preventing sub-health, and detoxification. Each 100 grams of fresh purple potato contains only 0.2 grams of fat, producing 99 kilocalories of heat, making it a good low-fat, low-calorie food. At the same time, it can effectively prevent sugar from becoming fat.
- Enhance immunity
Purple potato contains a lot of mucus protein to prevent the liver and kidney connective tissue from shrinking, thus improving the body’s immunity and preventing collagen disease. Minerals contained in purple potatoes play an important role in maintaining and regulating body functions as well as preventing osteoporosis.
- Anti-oxidant effect
Purple potato has a good anti-oxidant effect. Frequent consumption of purple potato can fight aging, improve skin texture, and regulate endocrine.
- Protect liver
Purple potato can protect the liver. Many men who often drink and smoke often have impatient temper. Purple potatoes can play a role in reducing liver fire and conditioning health for them.
Purple potato contains oxidase, which is easy to produce gas. If you eat too much, you will feel bloating and abdominal tumbling, hiccup, and fart. Purple potato has a high content of sweet, and eating too much can stimulate the secretion of gastric acid, which makes people feel heartburn. Purple potatoes should be cooked thoroughly before eating, because starch granules are difficult to digest without high temperature damage.