Can mushrooms still be eaten if they have changed color

Mushrooms can usually be consumed if there is no odor or texture change after discoloration. If there are obvious mold spots, sticky or sour taste, it is not recommended to continue consuming. Mushroom discoloration may be related to oxidation, water loss, or microbial growth, and should be judged based on specific conditions. After harvesting, mushrooms undergo a natural oxidation reaction upon contact with air, resulting in a slight yellowing or browning of the surface, which is a normal phenomenon. For example, the blackened edges of sliced mushrooms are the result of tyrosinase oxidation, and they can still be safely consumed after washing. Some varieties such as shiitake mushrooms will gradually turn yellow in refrigeration, as long as the texture is firm and odorless, the nutritional value and safety are not affected. Before cooking, the discolored part can be removed and soaked in light salt water for ten minutes to help sterilize. If mushrooms become moldy or rotten due to improper storage, and green or black mold spots appear on the cap or the stem becomes sticky, it may breed harmful microorganisms. Especially for mushrooms with high water content, such as shiitake mushrooms and enoki mushrooms, they are easily contaminated by mold in humid environments, producing harmful substances such as aflatoxins. These spoiled mushrooms are difficult to completely destroy toxins even when cooked at high temperatures, and ingestion may cause gastrointestinal discomfort such as abdominal pain and vomiting. When storing, it is recommended to keep it dry and ventilated. For fresh mushrooms that have not been consumed, it is recommended to wrap them in kitchen paper and refrigerate them.

When purchasing mushrooms in daily life, it is recommended to choose varieties with intact mushroom caps and uniform color, and avoid purchasing products that have already seeped or have a sour taste. Short term storage can be stored in a paper bag and refrigerated. Observe for any abnormal changes before cooking. If symptoms such as dizziness and diarrhea occur after ingesting spoiled mushrooms, seek medical attention promptly. Reasonable storage and scientific judgment can maximize the preservation of the nutritional value and food safety of mushrooms.