1, mung bean
Beans contain soap toxins and some hemagglutination toxins, which can cause poisoning when eaten raw, and can be fatal in severe cases, so be sure to fry them until they are completely cooked.
2, fresh fungus
Fresh auricularia contains a photosensitive substance called porphyrin. After people eat it, the skin irradiated by light will cause dermatitis, itching, edema and pain, and severe dyspnea due to throat edema. This porphyrin will decompose most of it under sunlight, so it is best to use dried auricularia for edible fungi. In addition, dried fungus should be soaked in water before eating, and the remaining toxic substances in fungus will dissolve in water. After cleaning, there are almost no toxic substances.
However, dry fungus should pay attention to the time in the process of soaking hair. Generally, two hours is enough, and the longest time should not exceed one day, especially in hot summer weather, the time should not be too long, otherwise it is easy to breed bacteria and lead to poisoning.
If you like to eat fresh fungus, you must first boil the water in the pot, open the lid and blanch it thoroughly with boiling water, then clean it and fry it.
3. Fresh daylily
Day lily is also a vegetable that people often eat. Usually, we eat mostly dried daylily. Because fresh day lily contains colchicine, it will be oxidized into highly toxic colchicine after entering the human body, which will strongly stimulate the gastrointestinal and respiratory systems and cause food poisoning. However, after fresh day lily is steamed, boiled and dried, the toxic substances have been destroyed in the processing process and will not cause poisoning.
4.konjac
The whole plant of Amorphophallus konjac is poisonous, especially the rhizome. After eating it by mistake, the human body is easy to be poisoned, and symptoms such as tongue and throat swelling, diarrhea and vomiting may occur. If you want to eat, you must cook for more than three hours before you can eat. We usually see konjac foods in the market, such as konjac blocks, konjac strips, konjac filaments, konjac slices, konjac balls, konjac tofu and so on. It is made by professional technology, which removes the toxicity of konjac and can be eaten safely. Therefore, it can be seen that although some foods are poisonous, we can enjoy their delicacies as long as we handle them properly. For this reason, it is particularly important to master the habits of food and adopt correct cooking methods.