And rotten potatoes can't be eaten. There is also potato toxin, which will be poisoned if eaten.
What toxins will be produced when potatoes germinate? Don't eat immature green potatoes. The slightly germinated and bluish parts and rotten parts on potatoes should be thoroughly removed. If the blue area of potatoes is large and there are many sprouted parts, they should be thrown away. 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. View original post >>
What happens when potatoes are soaked in salt water? I remember that in high school, there were similar problems in biology class. When potatoes are just put into salt water, because the concentration of potato cell fluid is much less than that of salt water, potatoes will lose water and wither because of the difference in concentration. After a period of time, after the salt water diffuses into the tissue fluid of potato cells, the concentration of the two is the same, and the potato will harden again. So to sum up: first soft, then hard.
Can potatoes still be eaten after germination? What toxins will be produced? If you can't eat it, it will produce black nightshade, and it will cause food poisoning after vegetarianism.
What poison is Solanum nigrum in potatoes? What will happen to Solanum nigrum
Solanine is a toxic substance in potatoes, also known as potato toxin (also found in eggplant and immature tomatoes), and it is a toxic glycoside alkaloid. Soluble in water, corrosive and hemolytic, but can be decomposed and destroyed when heated by acetic acid. Generally, every100g of potato contains only about10mg of solanine, which will not cause poisoning. However, in immature potatoes or potatoes whose skins turn green and germinate due to sunlight during storage, the content of solanine can be as high as 500 mg per 100 g, which can cause acute poisoning if eaten in large quantities.
The incubation period of solanine poisoning is 0.5 ~ 3.
H, according to the degree of solanine poisoning in humans and animals, it can be generally divided into three types: ① mild poisoning, mainly manifested as digestive system symptoms. After eating, there is burning sensation in throat and mouth, nausea and vomiting, abdominal pain, diarrhea, and occasionally mucus and bloody stool. Repeated or severe vomiting and diarrhea can lead to dehydration, electrolyte imbalance and blood pressure drop. ② Patients with severe poisoning mainly show nervous system symptoms, such as tinnitus, photophobia, headache, dizziness, fever, dilated pupils, dyspnea, blue complexion, black lips and weakness of limbs. In severe cases, people may be in a coma, twitch, and finally die of respiratory center paralysis. ③ Causes enterogenous cyanosis.
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Potatoes are poisonous and cannot be eaten after germination. Is it poisonous for potatoes to turn green after a period of time? How to store potatoes? Can long-term release also produce toxins? Germinated and green potatoes can't be eaten. Germinated potatoes contain a toxic substance, solanine. When the potato is intact, its content is very small. Once the germination turns green, the content of solanine will increase sharply, especially in the bud, bud eye, skin and rot. If you eat potatoes that sprout and turn green, it will cause poisoning. Solanum nigrum has a strong * * effect on gastrointestinal mucosa, paralyzing respiratory center and motor center, which can cause brain edema and congestion. If it is slightly green, when eating, you must dig out the green parts of the buds and roots and potato skins, soak them in clear water for more than two hours, and change the water at least three times before eating.
Toxins produced by moldy potatoes When potatoes germinate, they produce a toxin called solanine. Good quality potatoes only contain 100 mg of solanine per 100 g, while solanine in green, germinated and rotten potatoes can be increased by more than 50 times. Eating a very small amount of Solanum nigrum is not necessarily harmful to human body, but if you eat 200 mg of Solanum nigrum (about half a dozen potatoes that have turned green and sprouted) at a time, it will take 15 to 3 hours to get sick. The earliest symptoms are itchy mouth and throat, epigastric pain, nausea, vomiting and diarrhea. Those with mild symptoms will heal themselves after 1 ~ 2 hours through their own detoxification function. If you eat more than 300 ~ 400 mg of Solanum nigrum, the symptoms will be very serious, such as dehydration and repeated vomiting caused by rising body temperature, dilated pupils, fear of light, tinnitus and so on. Therefore, patients with severe symptoms should be sent to hospital for treatment as soon as possible. Attention must be paid to prevent potato solanine poisoning. * Don't eat immature green potatoes. * Slightly germinated and bluish parts and rotten parts on potatoes should be thoroughly removed. If the blue area of potatoes is large and there are many sprouted parts, they should be thrown away. * Cut peeled potatoes into small pieces and soak them in cold water for more than half an hour to make the remaining solanine dissolve in water. * Using 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. * Boiled potatoes should be crispy and thoroughly burned, and solanine can be partially decomposed by using high temperature for a long time. If you feel a little numb in your mouth when eating potatoes, it means that potatoes still contain more solanine, so you should stop eating them immediately to prevent poisoning. It is reported that if pregnant women eat too much Solanum nigrum, it may lead to fetal malformation, so pregnant women should be especially careful.
What experiments can germinated potatoes do to prove that toxic potatoes contain a toxin called solanine? Every100g contains about10mg of solanine, which will not cause poisoning after people eat it. However, when the potato germinated or the epidermis changed color, the content of solanine increased obviously, with more than 500 mg per 100 g, which was 50 times of normal. Solanine is a weakly reducing glycoside, which is easy to cause poisoning after eating. Solanine is corrosive to human mucosa, paralyzing the central system, destroying red blood cells in the blood, and even causing congestion and edema of brain tissue.
After eating germinated and immature potatoes, the disease begins at about 10 minutes -2 hours. The poisoned person first feels burning pain in the throat and middle cavity, and then appears nausea, vomiting, abdominal pain, diarrhea or * general numbness, sore throat, weakness of limbs, severe ptosis, blood pressure drop, arrhythmia, dilated pupils, dyspnea, coma and respiratory center paralysis.
If you have eaten sprouted potatoes and the above situation occurs again, you should think of poisoning. 1 Take strong tea water immediately, and then induce vomiting in the throat; 2. Send to the nearest hospital for emergency treatment or call for help to 120 emergency center in time; 3. Wash the stomach with 1% tannic acid solution or strong green tea, then pour in 5 raw egg whites and 20g activated carbon; 4. Oral or infusion of 5% magnesium sulfate for catharsis; 5. Drink vinegar properly; 6. Lighter people drink more sugar boiled water and warm salt water, while heavier people drip glucose saline intravenously to promote the elimination of poisons and correct dehydration; 7. Symptomatic treatment and timely application of respiratory stimulants.
In order to avoid poisoning caused by eating sprouted potatoes, it is necessary to avoid sunlight and prevent germination when storing. Potatoes with excessive germination or green skin are not allowed to be sold or eaten. People often publicize that the skin and meat of over-germinated potatoes are toxic, so be alert. If there is little germination, the germinated part and the purple part can be completely dug out, soaked in clear water for 30 minutes, cooked thoroughly, and dipped in vinegar when cooking, which can accelerate the destruction of toxins.
Digging out the sprouted part of the potato still has health risks, but the danger is not great. There is a bud in one corner of the potato, so most families will choose to cut off the corner of the long bud and continue to eat the rest, so as not to let the long bud rot. After all, it is a waste to throw away a potato for a bud, but does this mean there is no danger of food poisoning? From the point of view of nutrition, even if a corner of MengMeng is cut off, there is still the danger of food poisoning, but any problem should be considered comprehensively. Generally, you don't eat enough potatoes to cause food poisoning. Therefore, if a big potato grows a small bud, it will not be a problem to dig it out and eat it. In the past, ordinary people often hoarded potatoes and found that they had buds and were reluctant to throw them away. In many cases, they dig out buds and continue to eat potatoes. From life experience, we can know that this practice can't go wrong. However, if the surface of the potato is moldy and blue, or there are several buds on a potato, you should throw them away without hesitation. Even if the buds are dug out, even if there is no danger of poisoning, there is little nutrition and taste left, and there is nothing left to eat.
It is safer to cook potatoes with soaked water and vinegar. What should I do if I am worried about the negative impact on my health by digging potato buds? In fact, it's best not to eat potatoes that have sprouted, but if you think it's a pity to throw them away, you can dig the potatoes you want to eat and soak them in water. It's safer to remove the water when eating. In addition, adding a little vinegar during cooking can accelerate the destruction of Solanum nigrum and prevent Solanum nigrum from causing harm to human body. In addition, when cooking potatoes, you should also pay attention to cooking for a few more minutes, try to cook them well, and don't eat them half-cooked.
Storage method of potato
In fact, the key to storing potatoes is to control the temperature. The suitable storage temperature of potato is 3-5℃ and the relative humidity is about 90%. At this time, the tuber is not easy to germinate or germinate very little, and it is not easy to shrink.
Therefore, potatoes should be kept in a cool and low temperature place, not in plastic bags, otherwise plastic bags will cover up the heat and let potatoes sprout. After the potato germinates, there will be a lot of toxic solanine around the bud hole, which is a neurotoxin that inhibits the respiratory center. Some people like to wrap potatoes in plastic wrap and put them in the refrigerator. Although this method can prevent potatoes from going bad, it wastes too much refrigerator space, and the money for buying potatoes is often not enough to cover the electricity bill.
So, you can put the potatoes together in a breathable net bag, in a well-ventilated place with backlight at home, or put some sand in the corner to keep warm and dry. At the same time, don't pile up potatoes, let them breathe, and remove sick and rotten bad potato pieces at any time. In addition, potatoes can't be stored with sweet potatoes, otherwise they will germinate easily. Put an apple in the potato bag to control the potato germination.
How to choose potatoes
If there is no broken skin, try to choose a round one. The rounder the better. The skin must be dry without blisters, otherwise the storage time will be short and the taste will be bad. Don't have buds and greens, that's about it. Potatoes that sprout already contain toxins and are not suitable for eating. If you find that the potato skin turns green, don't eat it even if it is very light green. Because the green of potatoes is a sign of the existence of toxic alkaloids, eating them will be poisoned.