Purple potatoes and sweet potatoes are very similar in shape and texture, but the color of purple potatoes and sweet potatoes have a clear difference, sweet potatoes are yellow, orange, light yellow, while purple potatoes are purple or dark purple, which is the simplest and most intuitive difference between purple potatoes and sweet potatoes.

Purple potatoes, also known as black potatoes, containing vitamins, minerals, pectin, dietary fiber, starch and other nutrients, but also rich in selenium, anthocyanins, sweet potatoes and purple potatoes contain nutrients are basically the same, but purple potatoes are rich in anthocyanins, while sweet potatoes contain a large number of carotene.

Purple potatoes contain a lot of anthocyanins, anthocyanins are natural antioxidants, can remove free radicals and antioxidants, and is rich in selenium, eat more purple potatoes can be beauty, anti-aging. And sweet potatoes are rich in vitamin A, carotene, have a better protective effect on the eyes. Both are rich in dietary fiber, which can promote digestion and facilitate the discharge of stool.

Purple potatoes are less productive and have higher requirements for growth and production, so they are more expensive. Sweet potatoes are less difficult to grow and have a high yield, they can be a household name for nutritious food and are grown by a very large number of people, making them less expensive compared to purple potatoes.