Why do mushrooms have an unpleasant odor

The unpleasant odor of mushrooms mainly comes from volatile sulfides and aldehydes, which can produce a decay like odor in specific varieties or improper storage. Commonly found in wild species such as sulfur mushrooms and puffers, or edible mushrooms that have been stored for too long. During the growth process, mushrooms will synthesize sulfur-containing compounds such as dimethyl trisulfide, which is the source of most pungent odors. Some varieties actively secrete these substances to resist pests, especially during maturity or when they are subjected to mechanical damage. Edible mushrooms maintain metabolic activity even after harvesting. If the storage environment is too humid or poorly sealed, microorganisms can decompose proteins and produce ammonia odor substances. At the same time, the release of residual spores in the gills can also exacerbate the special odor. The odor of wild mushrooms is often associated with toxins, such as the putrid odor of the Amanita genus, which is often accompanied by high toxicity. artificially cultivated shiitake mushrooms, such as shiitake mushrooms and shiitake mushrooms, occasionally have a rancid taste, often due to cell rupture and release of enzyme substances caused by transportation collisions. Some edible fungi, such as black tiger palm fungus, have a stimulating odor similar to gasoline, but after being cooked at high temperatures, they actually form a unique flavor.

When selecting mushrooms, observe whether the mushroom cap is dry and free of mucus, and whether the gills are evenly colored without any signs of blackening. It is recommended to wrap fresh mushrooms in kraft paper and store them refrigerated to avoid sealing them in plastic bags. Soak in light salt water for ten minutes before cooking to reduce the earthy smell. High temperature stir frying or adding spices such as ginger and garlic can effectively neutralize the odor. Groups that are abnormally sensitive to odors can choose varieties such as shiitake mushrooms and white jade mushrooms with lighter odors. Mushrooms with obvious spoilage odors should be discarded immediately.