Purple sweet potato is purple sweet potato, so it is also called black sweet potato, purple sweet potato or purple sweet potato. Purple sweet potato contains 10 mineral elements such as selenium, zinc, iron and phosphorus, 18 amino acids, and 8 vitamins such as vitamins C, B and A, especially anthocyanins, which have great medicinal value.

Purple sweet potato is a special variety of sweet potato, which has the characteristics of edible, economic and medicinal crops. Besides the components and functions of common sweet potato, it also has many physiological functions and is an important raw material for food, medicine, chemical industry, light industry, textile and other industries.

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nutritive value

Purple sweet potato is rich in dietary fiber, starch, vitamins and trace elements (selenium, iron, calcium, potassium, etc. ), anthocyanins, glycoproteins, carotene, dehydroepiandrosterone and other functional factors, with antioxidant, anti-tumor, enhance memory, prevent hypertension, repair myocardium, relieve liver dysfunction and enhance immunity? .

1, rich in anthocyanin: anthocyanin is a water-soluble substance widely found in plants, belonging to flavonoids and polyphenols, which mainly exists in the cell sap of fruits, stems and leaves of plants.

2. Other active ingredients and their functions: In addition to anthocyanins, purple sweet potato also contains many active ingredients such as β-carotene, dehydroepiandrosterone (DHEA), sugar egg white, dietary fiber and polyphenols.

3. Glycoprotein in purple sweet potato can prevent the accumulation of fat in cardiovascular system, protect the elasticity of arterial blood vessels and promote the lubrication of digestive tract, respiratory tract and joint cavity.

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