82 kcal/100g.

Purple sweet potato is rich in dietary fiber, starch, vitamins, trace elements (selenium, iron, calcium, potassium, etc.) and anthocyanins, glycoproteins, carotene, and dehydroepiandrosterone. and other functional factors, which have functions such as antioxidant, anti-tumor, memory enhancement, prevention of hypertension, repair of myocardium, alleviation of liver dysfunction, and enhancement of the body's immunity.

In addition to anthocyanins, purple sweet potato also contains various active ingredients such as β-carotene, dehydroepiandrosterone (DHEA), glycoproteins, dietary fiber and polyphenolic compounds. . It is reported that the β-carotene in purple sweet potato can reduce the body's reactive oxygen species, eliminate free radicals, and has physiological effects such as anti-cancer, anti-tumor, and improving the body's immunity. In addition, β-carotene has slight sweating and beauty and health care effects.

Extended information:

Characteristics of purple sweet potato varieties:

1. Excellent quality and delicate meat, it is an excellent fresh and healthy sweet potato variety. It can also be used to extract natural anthocyanins; it has beautiful appearance, purple-black skin color and purple flesh color. Potato-shaped long spindle, with smooth and bright skin, good marketability, the marketability rate is as high as over 90%, and the drying rate is about 33%.

2. The vines are short and have many branches, and the above-ground part has strong growth potential. The leaves of purple sweet potato are green, the stems are purple, and the base of the petiole is about 1cm purple, with 5-6 branches and a length of only 1.2-1.5m. left and right, which facilitates field production management.

3. The yield of fresh potatoes is high, and the yield of neat and concentrated potatoes is generally about 2500kg per 667 _. If managed properly, the yield of summer potatoes can also reach about 2000kg per 667 _.

4. Premature. It can be planted in double seasons, and the potato tuber will expand early. If it is cultivated with film in early spring, it will be ready for the market from the end of July to the beginning of August.

5. Strong adaptability and good disease resistance. It is highly resistant to sweet potato root rot, relatively resistant to stem nematode disease, resistant to barrenness and drought, and is suitable for a wide planting area.

Baidu Encyclopedia-Purple Sweet Potato