This research demonstrates that extracts from oyster mushrooms (Pleurotus eryngii) can effectively prevent the production of aflatoxin B1, a highly toxic and cancer-causing substance produced by certain molds that contaminate crops like corn and wheat. The mushroom extracts work by inhibiting the toxin production by up to 94%, offering a natural, environmentally-friendly alternative to chemical pesticides. The study suggests that compounds in mushrooms, including special sugars and enzymes, may help protect food supplies from this dangerous contamination, which is becoming increasingly important as climate change creates more favorable conditions for mold growth.