A COMPARISION OF ANTIMICROBIAL ACTIVITY OF FIELD GROWN AND INVITRO PROPAGATED MENTHA PIPERITAA. LAKSHMI BHAVANI AND G. RENUKAAbstract The antimicrobial activity in the leaf extracts of invitro propagated and field grown Mentha piperita L against pathogenic bacteria like Pseudomonas aeruginosa, Shigella boydii, Proteus mirabilis, Proteus vulgaris, E.coli, Enterobacter aerogenes, Acillus subtilis, and Serretia marcescens, was compared and evaluated by using the agar well diffusion method. The comparative analysis showed that the invitro propagated leaf extracts of Mentha pipertia L. were more effective against all the organisms with the maximum zone of inhibition with ethyl acetate extracts against Serretia marcescens, Pseudomonas aeruginosa and Proteus mirabilis. While the solvent extracts of field grown plants, showed lesser effect with maximum zone of inhibition with ethyl acetate against Pseudomonas aeruginosa and Proteus mirabilis.
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