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Spice Oils for the Control of Co-Occurring Mycotoxin-Producing Fungi

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Abstract:

The effect of nine different oils was evaluated on the growth of Aspergillus parasiticus and Fusarium moniliforme. The experimental design to examine the inhibition of mycotoxins involved the incorporation of each of seven oils into broth and patty cultures. The fungal mycotoxin was identified by high-pressure liquid chromatography. Clove oil (eugenol) was the most inhibitory to the growth of A. parasiticus and F. moniliforme, followed by cinnamon (cinnamic aldehyde), oregano (thymol and carvacol) and mace oils (myristin). Neem and eucalyptus oil (cineole) did not affect fungal growth. The feasibility of implementing the results of this study to control mycotoxin toxicity was examined by costoring whole and ground cloves with mycotoxin-infected grain. Addition of both whole and ground cloves markedly reduced the aflatoxin contamination of the grain. These results clearly suggest that commonly occurring mycotoxigenic fungi can be controlled with clove oil (eugenol), thus spice oil successfully inhibited the growth of A. parasiticus and F. moniliforme, regulated the production of fumonisins, and prevented the formation of aflatoxins. The social implication of this finding is that rural communities can prevent the formation of fungal toxins in contaminated grain by simple measures.

Keywords:

Document Type: Research Article

Affiliations: Department of Biological Sciences, M. L. Sultan Technikon, P.O. Box 1334, Durban 4001, South Africa

Publication date: April 1, 2002

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