1, cold black fungus overnight whether you can still eat, the key to look at the overnight black fungus is not deterioration, if the preservation of good not deteriorate, you can eat. If the black fungus degeneration, odor and other conditions, you can not eat, should be discarded in a timely manner.

2, cold black fungus is soaked fungus, if placed at room temperature is easy to deteriorate, the reason for deterioration is bacterial growth. And put in the refrigerator to chill, if there is no deterioration can be eaten. Because the refrigerator low temperature environment within the bacterial reproduction is limited, not conducive to breeding, so you can extend the preservation time of cold black fungus, but should also avoid more than 1 day.

3, soaked fungus surface of long-term moisture is easy to be contaminated by Pseudomonas aeruginosa, the study found that the bacteria can be cultured 24-48 hours after the production of rice fermentation bacterial acid. And miebic acid is a bacterial endotoxin, is one of the higher lethality of bacterial toxins. Keeping black fungus in the refrigerator does not kill Pseudomonas aeruginosa, and once contaminated, a large amount of it enters the human body and produces the toxin Mibefonate, which can cause systemic organ failure and a high mortality rate. Therefore, after soaking black fungus should be eaten as soon as possible.

4, cold black fungus rich in sugar, fat, protein, etc., for bacterial reproduction provides a nutritional basis, easy to breed a lot of bacteria, resulting in black fungus deterioration, not only the loss of nutritional value, taste is not good. And too much consumption of spoiled fungus, easy to cause nausea, vomiting, abdominal pain and diarrhea and other gastrointestinal reactions, may also have the possibility of poisoning.