Abstract

ANTIMICROBIAL ACTIVITY IN DIFFERENT POPULATIONS OF URGINEA INDICA (ROXB) KUNTH . HYACINTHACEAE IN DIFFERENT SOLVENTS

Hemalata S.K. and Shiva Kameshwari*

Abstract

The in vitro antibacterial activity of various solvents and water extracts of (bulb extract) different populations of Urginea indica was assessed on 4 different pathogenic bacteria. The zone of inhibition is determined by agar well diffusion method varied with the plant extract, the solvent used for extraction, and the organism tested. Serratia marsescens, Proteus vulgaris, Staphylococcus aureus are the three types of pathogenic bacteria who showed maximum sensitivity to almost all populations of Urginea indica with maximum zone of inhibition. Where as Pseudomonas aeruginosa showed maximum resistance to all populations. It is an effort to test which solvent and which microbe showed maximum inhibition in Urginea indica. Previous work on different strains of bacteria such as Bacillus cereus, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa pathogens showed inhibition more in petrolium ether. While alcoholic extract of M. azedarach showed maximum zone of inhibition and minimum inhibitory concentration against all the microorganisms. Antara sen and Amla batra 2012 Ethanol and methanol extracts were found to be more potent being capable of inhibitory activities against majority of bacteria investigated.

Keywords: Antimicrobial activity, Urginea indica, Agar well diffusion method, Maximum zone of inhibition.