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Volume 6, Issue 3, June Issue - 2018, Pages:490-497

Authors: Chandi C. Rath, Alena Patnaik
Abstract: In the present study, eight different essential oils (Basil, Citronella, Neem, Turmeric, Eucalyptus, Pipermint, Palmarosa, Lemongrass) were tested for their antifungal activities against Aspergillus niger and Fusarium oxysporum. Result of the study revealed that all the tested essential oils showed fungicidal properties against these two test pathogens. Among the eight essential oils tested, Citronella oil showed maximum antifungal activities and this was followed by Lemongrass and Pipermint. The MIC value of the oils ranged from 0.97- 500μl/ml. The Minimum Killing Time (MKT) of the oils varied from 0 min to 5hrs, at room temperature. Fungicidal activity of the oils retained even after treating at  100ºC for an hour and on autoclaving (121ºC and 15lb pressure for 20 min), which indicated thermostable and barostable nature of the active components in these oils. When the effect of commercially available synthetic fungicides were studied it was observed that both the  pathogens were resistant to copper chloride 50% WP and Carbendazim 50% WP  (upto 500 ppm) whereas, the essential oils killed the pathogens at a very lower concentrations and observed to be fungicidal in nature.  
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