Bracken, also called fistula, cat's claw, etc., is found in most parts of China, and many people like to pick up bracken on the mountain and eat it raw. Bracken is a representative of traditional wild herbs, and is the "king of mountain dishes." Many people think that it is green, non-polluting, nutritious, and even anti-cancer, and is known as the "longevity food."
According to relevant data, bracken leaves contain carotene, vitamins, protein, fat, sugar, crude fiber, potassium, calcium, magnesium and other nutrients and minerals. In addition, it also contains 18 kinds of amino acids. Modern research suggests that the cellulose in bracken has the effect of promoting intestinal peristalsis and reducing the absorption of fat in the stomach and intestines. Bracken is sweet and cold, and it has detoxification, heat-clearing, intestines, and phlegm-removing effects. Regular consumption can lower blood pressure and relieve dizziness and insomnia. Bracken can also stop diarrhea and diuresis, which contains dietary fiber can promote gastrointestinal motility, with the role of air purge, bowel detoxification, but also treatment of rheumatoid arthritis, dysentery, hemoptysis and other diseases. It also has a preventive effect on measles and flu.
Experiments conducted by many countries in the world on the carcinogenicity of bracken show that the substances associated with cancer contained in bracken are benzoyl acid, fernactam, xanthine alcohols, xanthophylls, and some substances similar to xanthophylls. The carcinogens contained the highest levels in the rhizomes of the bracken, followed by the leaves. Bracken can induce colon cancer, breast cancer, bladder cancer, and leukemia in rats. In recent years, scientists at home and abroad have discovered that bracken contains a substance called "Porchinin."
Propterine is a carcinogen and was rated by the International Agency for Research on Cancer as a class 3 carcinogen.
However, if the bracken is eaten once or twice, it will not be immediately cancerous. This is related to the food you eat. If you eat bracken for a long time, it will certainly cause harm to Ankang.
The fresh bracken must be treated with drowning water. The bracken must be hot and cooked in boiled water. In particular, under cold conditions, it must be cooked thoroughly. Don't eat raw bracken. Although the water can not be completely eliminated after treatment, at least Can reduce toxicity.
What are the other "toxic" vegetables?
Unripe tomatoes
Immature tomatoes contain a toxic substance called Solanum nigrum. Therefore, nausea, vomiting, and dizziness, drooling, and other poisoning symptoms occur after eating.
If eaten raw, it is more harmful.
Fresh fungus
Fresh fungus contains a light-sensitive substance called porphyrins. After human consumption, skin light can cause dermatitis, itching, edema, and pain. Some individuals also experience dyspnea due to pharyngeal edema.
Therefore, it is only safe to buy dry fungus after eating it.
Fresh daylily
It contains a highly toxic substance of colchicine that will poison if consumed. Symptoms of poisoning are nausea, diarrhea, headache, thirst, and even coma occurs.
Therefore, fresh lily must be cooked and dried before eating.
Autumn lentils and pods
These foods contain a blood clotting substance, aggrecan, which causes blood to clot and is a toxic protein. Its pods contain a hemolysin. These poisonous ingredients are particularly high in mature “old lentils†in the fall. People tend to be poisoned if they eat, causing headaches, dizziness, nausea, and vomiting. However, these toxins can be destroyed after high temperature treatment. Therefore, the vegetables should be cooked in high temperature and thoroughly cooked until they are edible.
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