From the nutritional point of view, it has more advantages than rice and flour, and can supply a lot of heat energy to the human body, so it can be called "perfect food". People only rely on potatoes and whole milk to maintain their lives and health. Because the nutritional components of potatoes are very comprehensive and the nutritional structure is reasonable, but the contents of protein, calcium and vitamin A are slightly lower; And this is just a supplement to whole milk. Potato tuber has more water, less fat and less calories per unit volume. It contains 10 times of vitamin C, 4 times of B vitamins and several to several times of various minerals, and is a food for lowering blood pressure. By the same token, if you adjust your diet, you can "eat" the corresponding diseases. Potatoes contain a lot of carbohydrates, as well as protein, minerals (phosphorus, calcium, etc. ) and vitamins. It can be used as a staple food, as a vegetable, as an auxiliary food such as French fries and potato chips, as well as starch and vermicelli, and can also be used for brewing wine or as feed for livestock. Potatoes contain some toxic alkaloids, mainly solanine and mucormycol, but the toxic substances will decompose after being cooked at a high temperature of 170℃. Wild potatoes are highly toxic, and solanine poisoning can lead to headache, diarrhea, convulsions, coma and even death. However, the toxicity of common cultivated potatoes is very low, and there are few potato poisoning incidents. Generally, cultivated potatoes contain less than 0.2 mg/g of alkaloids, and generally more than 200 mg will lead to poisoning, which is equivalent to eating 1.4 kg of raw potatoes at one time. If potatoes are exposed to light during storage, they will turn green and toxic substances will increase; The purple eyes of germinated potatoes can also cause the accumulation of toxic substances, which is prone to poisoning incidents. Pay attention when eating.