Purple sweet potato is also known as black potato. Purple potato is purple potato as its name implies. Compared with sweet potato which was widely known before, purple sweet potato is often considered to be sweet potato. Although there is not much difference in shape, it is peeled off. The color inside is completely different. The purple sweet potato's flesh is purple. Sometimes the purple of the purple sweet potato flesh appears through the epidermis.
Purple sweet potato is rich in protein, starch, dietary fiber, pectin, amino acids, vitamins and various trace elements. Compared with sweet potatoes, sweet potatoes are rich in anthocyanins and trace elements selenium and iron. Because purple sweet potato is rich in anthocyanins, it is one of the main raw materials of anthocyanins, and ranks first in the anti-cancer vegetables announced by the National Vegetable Cancer Research Center of Japan.
The nutritional content of 100 grams of purple sweet potato is as follows:
Carbohydrate: 17.6 grams
Dietary fiber: 1.17 grams
Protein: 2.34 g
Potassium: 97 mg
Phosphorus: 121 mg
Sodium: 2.4 mg
Calcium: 23 mg
Manganese: 1.36 mg
Zinc: 1.45 mg
Iron: 1.1 mg
Copper: 0.19 mg
Selenium: 2.5 micrograms
Calories: 119.3 kcal
The effect and function of purple sweet potato
1. Antioxidant
Purple sweet potato contains rich in anthocyanins, and anthocyanins have good anti-oxidant effects. Therefore, consumption of purple sweet potatoes can prevent aging, remove free radicals from the body, and promote good health.
2. Lose weight
The purple sweet potato's calories are lower than those of the regular staple foods, like rice or anything, so the purple sweet potatoes can fill their stomachs, but the calories are low, and the fat content is also very low. The purple sweet potatoes are rich in dietary fiber and dietary fiber can promote Gastrointestinal motility promotes the emptying of the intestines, so purple sweet potato is a good diet food.
3. Enhance immunity
Purple sweet potato is rich in protein and amino acids. The proteins and amino acids in purple sweet potato are easily digested and absorbed by the body. Most of them are mucin proteins, and mucin can prevent the atrophy of connective tissue in the kidney and liver, which can improve the body's immunity. Forces, and purple sweet potatoes are rich in trace elements, trace elements help maintain and regulate the body's circulation and secretion, so consumption of purple sweet potatoes can enhance the body's immune system.
4. Promote gastrointestinal motility
Purple sweet potato is rich in dietary fiber, dietary fiber helps gastrointestinal motility, and helps the discharge of putrefaction and accumulated waste gas in the intestine, discharges waste from the body, toxins, prevents constipation, and improves the digestive tract of the human body. Environment to prevent gastrointestinal diseases.
5. Anti-fatigue
Purple sweet potato is rich in trace elements selenium and elemental iron. Selenium is easily absorbed by the body and remains in the serum of the human body. It can help the body repair myocardium, remove free radicals in the body, enhance immunity, and resist fatigue. Iron can help the synthesis of human hemoglobin, an essential element of blood, and iron supplementation is needed for people with iron deficiency anemia.
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