When potatoes germinate, they will produce a toxin called solanine. Good quality potatoes only contain 1 mg of solanine per 1 grams, while solanine in green, germinated and rotten potatoes can be increased by 5 times or more. Eating a very small amount of Solanum nigrum is not necessarily harmful to the human body, but if you eat 2 mg of Solanum nigrum at a time (about half a dozen potatoes that have turned green and germinated), you can get sick after 15 minutes to 3 hours.

Extended information

1. Do not eat immature green potatoes.

2. The slightly sprouted and blue parts and rotten parts on potatoes should be thoroughly removed. If the potato has a large blue area and many sprouting parts, you should throw it away.

3. Cut peeled potatoes into small pieces and soak them in cold water for more than half an hour to dissolve the remaining solanine in water.

4. Taking advantage of the weak alkalinity of Solanum nigrum, adding proper amount of rice vinegar when cooking potatoes, and decomposing Solanum nigrum by using the acidity of vinegar can play a detoxification role.

5. Cooking potatoes should be cooked and thoroughly burned, and the solanine can be partially decomposed by using high temperature for a long time.

Reference: Health Channel-People's Network Potato Germination: 5 times more toxic-