Purple groundnut:
That is, purple potatoes, is genetically modified food, nutrients and yellow and white groundnut is basically the same, can be refined anthocyanin
White groundnut:
Water large varieties, the taste is slightly worse than the yellow groundnut, fiber, general processing is less popular.
Yellow groundnut:
That is, yellow-fleshed groundnut, sticky sweet taste, is a high-quality selection of dried groundnut groundnut strips, and the rate of flour is very high, sweetness by the purchase of the crowd's great love. Can be eaten as a snack, but also can be used to bake groundnuts, is a big feature of the winter.
Sweet potato:
Sweet potato (English: sweet potato) formerly known as sweet potato (scientific name: Ipomoea batatas (L.) Lam.), also known as red taro, sweet potato, sweet potato, yam (Hebei), yam, sweet potato, sweet potato (north), red camas, line camas, white potatoes, sweet potatoes, sweet potatoes, Zhu yam, cushion potatoes, sweet potatoes, white potatoes, fennel taro and so on. Sweet potato belongs to the order of tubular flowers, annual herbaceous plants of the family Cyclophyllaceae, more than 2 meters long, lying flat on the ground obliquely, the leaf blade is usually broadly ovate, 4-13 centimeters long, 3-13 centimeters wide, the corolla pink, white, mauve or violet, campanulate or funnel-shaped, 3-4 centimeters long, the capsule ovate or compressed-orbicular, pseudoseptate, divided into 4 chambers, with underground caudexes, which are fusiform, with a rustic-yellow or purplish-red outer skin. Sweet potato is rich in protein, starch, pectin, cellulose, amino acids, vitamins and a variety of minerals, "longevity food" reputation. Sugar content reaches 15%-20%. There are anti-cancer, heart protection, prevention of emphysema, diabetes, weight loss and other effects. North commonly known as groundnut, yam. Ming Dynasty Li Shizhen "Compendium of Materia Medica" recorded "sweet potato to supplement the deficiency, strengthen the spleen and stomach, strong kidney yin", and said that the people in the sea eat long life. Chinese medicine regard sweet potato as a good medicine.