Millet has round, oval or spindle-shaped tuberous roots in the underground part, and the stems are horizontal or ascending, with occasional twining and multi-branching. The shape and color of leaves often vary with varieties, usually with wide oval shape and different petioles. Cymes axillary, capsules ovoid or oblate, 1-4, usually 2, glabrous.
Main value:
Sweet potato is a natural nourishing food with comprehensive nutrition, which contains protein, fat, polysaccharide, phosphorus, calcium, potassium, carotene, vitamin A, vitamin C, vitamin E, vitamin B 1, vitamin B2 and 8 kinds of amino acids. According to the analysis of scientists, its protein content is more than 7 times that of rice; The content of carotene is 3.5 times that of carrot; The content of vitamin A is 100 times that of potato.
The contents of sugar, calcium, vitamin B 1 and vitamin B2 are higher than those of rice and flour. The edible part of each100g fresh potato block contains 29.5g of carbohydrate, 0.2g of fat, 20mg of phosphorus, 0.8mg of calcium/kloc-0, and 0.4g of iron.
These substances play an important role in promoting the activity of human brain cells and secreting hormones, enhancing human disease resistance, improving immune function, and delaying mental decline and physical aging. The Japanese Ministry of Health has listed it as an important food for dietotherapy.
Reference to the above content: Baidu Encyclopedia-? purslane