2. Purple sweet potato and sweet potato have different nutritional values. Purple sweet potato has high nutritional value. Purple sweet potato is rich in selenium and anthocyanins. Selenium is an anticancer substance, and anthocyanin is an organic active antioxidant, which can fight cancer and prevent aging.
3. The sugar content of purple sweet potato and sweet potato is different. Sweet potato has high sugar content and high sweetness. Because of the high sugar content, the baked sweet potato tastes sweeter, which makes the baked sweet potato rich in aroma and has a charming burnt flavor.
Extended data:
Purple potato is also called black potato, and its meat is purple to deep purple. Besides the nutrients of common sweet potato, it is also rich in selenium and anthocyanins. Purple sweet potato is one of the main raw materials of anthocyanin.
Purple sweet potato likes warm climate. The suitable growth temperature of stems and leaves is 18 ~ 25℃, and the growth stops below 15℃. The optimum ground temperature for the growth of tuberous roots is 22 ~ 24℃, and when the ground temperature is lower than 20℃, the tuberous roots stop expanding.
The fruit of sweet potato is the same as morning glory. It is a round or oblate capsule, with a diameter of 5-7 mm, and the peel is green or purple when it is immature, and turns yellow or brown when it is mature.
References:
Purple potato-Baidu encyclopedia
Sweet potato-Baidu encyclopedia