The control of Aspergillus flavus with Cinnamomum jensenianum Hand.-Mazz essential oil and its potential use as a food preservative

► We investigated the chemical compositions of Cinnamomum jensenianum oil. ► We assessed the effects of oil on mycelial growth, spore germination in Aspergillus flavus. ► We assessed the effects of oil on mycelium weight and AFB1 content in A. flavus. ► We observed the effects of oil on the mycelial ultrastructure changes of A. flavus. ► We assessed the effects of oil on ergosterol synthesis.