Antimicrobial Activity of the Ethanolic and Aqueous Extract of Vicia faba L. (Fabaceae) at Three Different Concentrations in the Absence and Presence of Zn(OAc)2.2H2O

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RC Jagessar S Hope S Issacs Y Crepaul

Abstract

The aqueous and ethanolic extract of Passiflora edulis and Vicia faba L. (Fabaceae) exhibited antimicrobial activity against the pathogenic microorganisms: E. coli, S. aureus, K. pneumoniae and C. albicans. This was evaluated using the Disc Diffusion Assay under asceptic conditions. Antimicrobial activity wasn’t induced by the solvent, ethanol nor water. The highest AZOI was 153.9 mm2 and the lowest 12.56 mm2. Negligible Zone of Inhibition, ZOI were observed in several instances. The aqueous extract of the fruit also induced negligible Zone of Inhibition, ZOI. In comparison to the reference, Ampicillin and Nystatin, these values are less. As the concentration of the metal salt, Zn(OAc)2.2H2O and ethanolic extract increases, there seem to be a variation in antimicrobial activity. Zn(OAc)2.2H2O appears to intensify the antimicrobial activity of the plant ethanolic and aqueous extract. Zn (OAc)2.2H2O in the absence of any extracts exhibited antimicrobial activity. The AZOI range from 47.2 mm2 to 117.8 mm2. Antimicrobial selectivity was also observed in several instances.

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