Antimicrobial activities of different solvent extracts of Tithonia diversifolia (Hemsely) A. Gray

In vitro efficacy of three organic solvent (petroleum ether, chloroform and methanol) extracts of Tithonia diversifolia leaves were tested against nine plant pathogenic fungal species (Alternaria alternata, Alternaria solani, Aspergillus flavus, Aspergillus niger, Cuvularia lunata, Drechslera oryzae, Fusarium oxysporum, Penicillium expansum and Penicillium italicum), one antagonist fungus(Trichoderma viride) and four human pathogenic bacteria (Enterococcus faecalis, Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus). Among the extracts, petroleum extract showed the highest antifungal activity followed by methanol and chloroform extracts. All the three extracts showed inhibitory effect against all the tested bacteria.

Author(s): Linthoingambi W. and Mutum S. Singh

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