Researchers found that cinnamon leaf essential oil is highly effective at stopping a harmful fungus called Aspergillus flavus from growing and producing dangerous toxins called aflatoxins that contaminate stored foods like peanuts. The essential oil works by damaging the fungus’s cell membranes, disrupting its energy production, and triggering harmful stress responses within the fungal cells. This natural approach offers a safe, environmentally friendly alternative to chemical fungicides for protecting stored food crops from fungal contamination.