Mushrooms are commonly known as edible macrofungi, including Pleurotus ostreatus, Lentinus edodes, Flammulina velutipes, Pleurotus eryngii, Coprinus comatus and many other varieties. In recent years, studies at home and abroad have reported that the ability of mushroom to enrich heavy metals is indeed higher than that of other green plants. This is because mushrooms can produce some protein which can be complexed with heavy metals, and detoxify by complexing with heavy metals to form nontoxic complexes, so they are not afraid of heavy metals.
The heavy metals in mushrooms come from the environment. If the culture medium is not polluted, the heavy metal content in natural water will not be too high because of sewage discharge, and mushrooms will not contain many heavy metals. Nowadays, mushrooms are basically cultivated with mushroom sticks and nutrient solution, generally sawdust, cottonseed hulls and corn stalks, which do not touch the soil at all.
Even if we ingest a small amount of heavy metals, metallothionein and glutathione in the human body can combine with heavy metal ions, making them inactive and further excreted through the digestive tract, which plays a role in detoxification. It can be seen that eating mushrooms leads to heavy metal poisoning is alarmist.
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Heavy metals, including gold, silver, copper, iron, lead and so on, cannot be biodegraded, but can be enriched thousands of times under the biomagnification of the food chain, and finally enter the human body, which may indeed endanger our health.
For example, due to the aggravation of marine pollution, mercury will form methylmercury under the action of some bacteria, which will accumulate in shellfish and marine fish through the food chain after being enriched by algae. Methylmercury can accumulate in the brain through blood-brain barrier, placental barrier and blood seminiferous tubule barrier, causing brain and nervous system damage, and mercury poisoning in fetus and newborn in reproductive system. So nutritionists suggest that everyone eat half a catty to a catty of fish and shrimp every week.
People's Network-"Eat less mushrooms"? Experts say that edible fungi are soilless and contain no heavy metals.
People's Daily Online-Eating mushrooms will not cause heavy metal poisoning.