1. The yellowing of bamboo fungus depends on the situation. Because bamboo fungus contains more polysaccharides, it is easy to oxidize with the oxygen in the air and turn yellow in the process of placing, so under normal circumstances, the color of the bamboo fungus is slightly yellow, in which the longer it is placed, the more yellow the color of the bamboo fungus will be. Whether the yellowed bamboo fungus can still be eaten needs to be decided according to whether the bamboo fungus has deteriorated or not, if the bamboo fungus is only yellow but no obvious deterioration occurs, then it is still possible to continue to eat, but it also needs to be eaten as soon as possible.

2. If the color of the bamboo fungus is already very yellow, it proves that it has been placed for a long time, and it is very likely that more microorganisms have grown in it. Even if there is no obvious deterioration of the fungus, most of the nutrients contained in the fungus have been lost, so it is recommended that you should discard the fungus.