Fresh potatoes contain a small amount of solanine, which is harmless to human body, but the content of solanine will gradually increase during long-term storage. When potatoes turn green, germinate or rot, the content of solanine will increase greatly. Eating a very small amount of Solanum nigrum is not necessarily harmful to human body, but if you eat 0.2-0.4 grams of Solanum nigrum at a time, it may cause poisoning.

After eating germinated potatoes, there may be symptoms of food poisoning such as nausea, vomiting, abdominal pain, dizziness and difficulty breathing. After the germinated potatoes are treated to remove buds, solanine may still remain in the green tubers, which may also cause poisoning, so it is not suitable to eat germinated potatoes.

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Nutritional value of potatoes;

1, potatoes are rich in vitamin C, which is not inferior to most vegetables and fruits, and because of the protection of starch, its vitamin C is not easy to be destroyed and lost during cooking and heating, and its utilization rate is higher than that of ordinary vegetables. There is almost no vitamin C in rice flour.

2. Potatoes are rich in carotene, much higher than rice flour. However, it is reported that its content is twice that of carrots, which is a boast.

3. Potatoes are rich in potassium, which is not inferior to most vegetables and fruits, but much higher than rice flour. The content of other minerals is also higher than that of rice flour.

4. Potatoes are rich in dietary fiber (including resistant starch, etc.), which is roughly equivalent to coarse grains and has higher health value than refined grains such as rice and white flour.

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