Articles Accepted

Report: In vitro antimicrobial activities of various solvent extracts derived from Viola odorata
by Dr. Syed Sadaqat Shah, 27 Feb 2024
Co-Author(s): Arshad Iqbal,Syed Sadaqat Shah,Bangwei Zhou

The principal goal of this research was to assess the antimicrobial activities of different polar and non-polar solvents extracted samples of leaves of Viola odorata. Disc diffusion method was used for the antimicrobial susceptibility test against Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Bacillus subtilis, Salmonella typhi, Staphylococcus aureus, Erwinia carotovora and Candida albicans. Results showed that iso-butanol and ethyl acetate fractions showed comparatively better activity than pet ether, crude, chloroform and aqueous fractions. E. carotovora was the most susceptible bacteria to all the extracts of Viola odorata while S. typhi was the most resistant bacteria. Iso-butanol extract inhibit the proliferation of Erwinia carotovora by 62% when using a 2 mg disc-1. Ethyl acetate extract inhibit the proliferation of E. carotovora by 53% with a 2 mg disc-1 dosage. The findings from our study also showed that the overall antimicrobial activity of Viola odorata leaves which was equally effective against both strains of bacteria.

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