yes. The black fungus poisoning overnight is actually caused by a kind of bacteria called Pseudomonas cocoanum, which produces a toxin called "mycotic acid". Once this toxin enters people's bodies, it will cause dizziness, diarrhea, general weakness and even unconsciousness, which is a typical symptom of poisoning.

Moreover, this toxin can't be removed by soaking or high temperature treatment, and it will still exist on the fungus, which will easily make you poisoned after eating. Therefore, when brewing fungus, we should pay attention to the fact that it is best not to be too dirty in the environment where the hair is soaked. The fungus itself will not transform itself into toxins, but will only transform the toxins in the surrounding environment. So when the fungus is polluted, it will become the source of toxins.

Therefore, when soaking the fungus, it is necessary to control the time of soaking the fungus for 1 to 2 hours before cooking. The brewing time is best not to exceed four hours. If it is hot water, the time requirement is even shorter. Therefore, in fact, when soaking agaric in life, we should pay attention not to soak too much at one time, and the time for soaking agaric is not too long. In this way, it can avoid the phenomenon that people will be poisoned if they eat fungus. Extended information

In fact, Auricularia auricula itself has no toxin, but a big factor that causes people to be poisoned after eating Auricularia auricula is the composition of rice yeast acid, which is a kind of bacteria, and this kind of bacteria is also a very common bacteria in nature. After the auricularia auricula is soaked in high temperature, it is easy to breed these bacteria;

if the storage environment of auricularia auricula is dirty, it will lead to the growth of many types of bacteria. In a clean environment, in fact, the black fungus that is soaked will not have the problem of bacterial growth. So in fact, there is nothing wrong with the black fungus itself, but if the environment is dirty, there may be the possibility of bacteria breeding.

China Quality Network-Is Auricularia auricula toxic after long soaking? A group of experiments tell you!