Health & Environmental Research Online (HERO)

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Journal Article 
In vitro antibacterial activity of Piper Longum L. fruit 
Singh, C; Rai, NP 
In this study the attempt was made to evaluate the antimicrobial activity of various solvent extracts of fruit of Piper longum L. against different gram positive and gram negative bacteria by using disk diffusion method. The petroleum ether extract was resistant towards all the tested bacterial strains while ethyl acetate was highly active. Among all the gram positive bacteria Staphylococcus aureus was highly sensitive with inhibition zone 24.33mm in presence of 500mg/ml ethyl acetate extract while in case of gram negative bacterial strains Pseudomonas aeruginosa and Vibrio cholerae were highly sensitive with inhibition zone 22.66mm. Hexane extract was least inhibitory towards all the bacterial strains. 
Antibacterial activity; Ethyl acetate extract; Piper longum