Effects of Four Essential Oils on the Growth of Aflatoxin Producing Fungi
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Abstract
There have been records that many essential oils have shown antimicrobial properties. Some essential oils can inhibit the growth of aflatoxin producing fungi and aflatoxin production. In this study we compare the ability of 4 plant essential oils, i.e. ginger oil, anise star oil, cajuput oil and cinnamon oil for controlling aflatoxin producing fungi. The oils at concentrations of 0, 0.5, 1, 2, 3, 4 and 5% were tested against Aspergillus flavus IMI 242684 and A. parasiticus IMI 102566 on Potato Dextrose Agar (PDA). The fungi were cultured and incubated at 30o C for 7 days. The results show that anise star oil at all concentrations had the most inhibitory effect on both Aspergillus flavus IMI 242684 and A. parasiticus IMI 102566 with significant difference followed by cinnamon oil and cajuput oils. Ginger oil had the least inhibition effect.
Keywords: Essential oils, Aflatoxin, Aspergillus flavus, Aspergillus parasiticus
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