You will not be poisoned if you eat unripe shiitake mushrooms
Because the shiitake mushrooms you usually eat are artificially cultivated edible fungi, they do not contain fatal toxins and are not poisonous like wild ones. Poisonous mushrooms contain neurotoxins, hemolytic toxins, or gastrointestinal tract irritants.
Artificially cultivated edible fungi will not contain the above toxins. However, if you eat undercooked mushrooms, it may cause gastrointestinal reactions. This may be gastrointestinal discomfort caused by bacteria that are not completely cooked in the food, but it is not caused by poisoning of the mushrooms themselves.
Extended information
Dried mushrooms contain a lot of minerals, including 124_ of calcium, 415_ of phosphorus, and 26_ of iron. They can be used as a good source of calcium, iron and phosphorus. . In addition, shiitake mushrooms also contain trace elements such as manganese, zinc, copper, magnesium, and selenium, which can maintain normal body metabolism and extend human life. It also has good preventive and therapeutic effects on the growth and development of children in certain mineral-deficient areas.
The carbohydrate content of dried shiitake mushrooms is as high as about 54, and the content varies slightly between different regions and strains. It contains hemicellulose as the largest carbohydrate, in addition to polysaccharides, trehalose, glucose, glycogen, pentosan and mannitol.
Reference: Baidu Encyclopedia-Shiitake Mushrooms