Sweet potato leaves, the young leaves on the top or both sides of the stem of the sweet potato, can be harvested in the southern four seasons. The common leaves of the sweet potato leaves are chicken claw, five claws, and heart shaped, and the petiole color is green, green and purple.
The sweet potato leaves are tested and contain 2.28 grams of protein, 0.2 grams of fat, 4.1 grams of sugar and 16 mineral potassium. 2.3 mg of iron, 34 mg of phosphorus, 6.42 mg of carotene and vitamin C 0.32 mg. Compared with common vegetables, the contents of minerals and vitamins are all superior, carotene content is even higher than carrots. Therefore, the Asian Vegetable Research Center has listed sweet potato leaves as high nutritive vegetables, which are called "the queen of vegetables".
Sweet potato leaves hot in Europe, America, Japan and Hongkong. The food made with sweet potato leaves even put on the dining table of the hotel and restaurant. Now there are various varieties of sweet potato leaves sold in the market, and the sweet potato leaves have become the food of modern people.
Sweet potato leaves extract powder is a kind of brown powder, with high purity, good color and reliable quality. Therefore, it is widely applied in food, health care products, medicine, cosmetics and so on.