Purple potatoes have higher nutritional value.

Sweet potatoes and purple potatoes among the higher nutritional value of purple potatoes, although the two foods are roughly the same nutrient composition, but purple potatoes in the content of zinc, selenium is much higher than sweet potatoes.

What's more, purple potatoes contain natural and potent free radical scavenger anthocyanin, which is not available in sweet potatoes. Sweet potatoes and purple potatoes are very common potato food, especially in winter, eat hot sweet potatoes, not only warm, but also very helpful to the stomach.

Related information:

According to an analysis by the U.S. Agricultural Products Center, the nutritional value of U.S.-produced purple potatoes is also much higher than that of other potatoes, with lysine, potassium, manganese, and zinc higher than that of the average sweet potato by a factor of 5-8, and iodine and selenium by a factor of 20 or more.

For the rice and noodles as the main food for our residents, purple potatoes in the rich lysine can supplement the rice and noodles in the lack of lysine, therefore, purple potatoes and rice and noodles with food can achieve the role of protein complementary.

Reference: People's Daily - Issue 480: Is purple potato really more nutritious than sweet potato?