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At present, increasing public awareness of the health and nutritional properties of agricultural products and their products, as well as the effects of chemical toxins and synthetic preservatives, doubles the demand for fresh and chemical-free food preservatives. Froriepia subpinnata is a member of the family Umbelliferae. This plant is native central and northern parts of Iran. Disk diffusion agar, well diffusion agar, minimum inhibitory concentration (broth microdilution and agar dilution) and minimum fungicidal concentration were used to evaluated the antifungal effect of Froriepia subpinnata essential oil. The results showed that Froriepia subpinnata essential oil was well able to prevent the growth of fungal strains that cause black and gray spoilage in vitro. The results showed that the inhibition zone diameter (disc diffusion method) for the fungal strains of Aspergillus niger and Botrytis cinerea was 15.50 and 13.30 mm, respectively. The results of the antifungal effect in the well agar method showed a much greater inhibition zone diameter than the disc diffusion method. The minimum fungicidal concentration for Aspergillus niger and Botrytis cinerea was 64 and 256 mg/mL, respectively. The minimum fungicidal concentration of Froriepia subpinnata essential oil was higher for Aspergillus niger and Botrytis cinerea strains than the minimum inhibitory concentration.

Keywords: Froriepia subpinnata, Aspergillus niger, Botrytis cinerea, Inhibition zone diameter.

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