Fresh mushrooms with a layer of white stuff can't be eaten.

If the mushrooms have not been left for a long time, but white hairs are growing on the surface, they are generally safe to continue to use. When mushrooms are not left for a long time, but white hairs grow on the surface, it means that the white hair-like material is a kind of spore secreted by the mushroom. This kind of spore is not a sign of deterioration and does not produce poisonous substances, only the taste will be reduced, so you can clean it and eat it later.

If the mushroom has been placed for a long time, white hairs grow and some other substances appear, this situation is not edible. This is usually due to the fact that the mushrooms have been left for a long time, resulting in mold and deterioration, which leads to the growth of white hairs. After growing white hairs, the fungus will destroy the nutrients in the mushroom, and it will leave a large amount of aflatoxin on the surface of the mushroom.

Picking mushrooms notes

1, look

A look at the mushroom color, containing whitening agent edible mushrooms, the surface looks very wet and bright, there is a feeling of washing, in the sunlight can produce purple fluorescence, the damage part of the color change is not obvious, with the detection of counterfeit ultraviolet light in the dark place a light. If there is a very bright fluorescent point, certainly contains whitening agent, and does not contain whitening agent, mushroom surface white or slightly yellow, damage to the color of the deep yellow.

Take a look at the packaging of mushrooms. Some supermarkets sell mushrooms packed in white plastic boxes, but the white plastic boxes themselves contain whitening agents, which can contaminate the mushrooms.

2, touch

Touch the surface of mushrooms, if it contains whitening agent, the surface will be smooth and feel good, and there will be wet feeling. The surface of mushrooms without whitening agent is astringent, and the surface is stained with mud, which is rough and dry to the touch.

3. Smell

Smell mushroom odor, when buying, choose the mushrooms that smell pure and fragrant, without acidic, smelly and moldy smell.