In potato tubers, solanin itself is mainly concentrated in the epidermis. If potatoes turn green seriously and penetrate deep into the interior, it is best not to eat them. For some potatoes that turn green, we can cut off all the green parts before eating.

If it turns green, it is chlorophyll, not solanine, but what we see is that turning green is highly correlated with the increase of solanine content, and some of its synthesis is influenced by light and then synthesized in situ. "That is to say, when buying potatoes, it is best not to buy green potatoes, and when storing potatoes, we must also pay attention to keeping them away from light.

Extended information Potatoes Fresh potatoes (tubers) can be cooked for food or vegetables. However, fresh potato tubers have large volume and high water content, so it is difficult to transport and store for a long time. For this reason, countries all over the world pay great attention to the production of potato processed foods, such as French frozen French fries, potato chips, potato instant powder, potato starch, and various cakes and egg rolls, amounting to more than 100. Fresh stems and leaves of potato can be used as feed through silage, but it contains solanine, which should be prevented from causing livestock poisoning. In some areas of China, potato stems and leaves are used as green manure, and their fertilizer efficiency is similar to that of Chinese milk vetch.

Potato tuber is rich in dietary fiber and potassium salt, which belongs to alkaline food. According to some data, its content is as much as that of apples. Therefore, the gastrointestinal tract absorbs potatoes slowly. After eating potatoes, it stays in the intestines for much longer than rice, so it is more full, and it can also help take away some oil and garbage, which has a certain laxative and detoxification effect.

In addition, the tuber of potato also contains carotene and ascorbic acid which are not found in cereals. 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, which can be called "perfect food". If people only rely on potatoes and whole milk, it is enough to maintain life and health. Because the nutritional components of potatoes are very comprehensive and the nutritional structure is reasonable, but the amount of protein, calcium and vitamin A is slightly lower; And this is just supplemented with whole milk.

References:

Baidu encyclopedia-potato