Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 9, Issue 1, 2007; Page No.(41-44)

ANTIMICROBIAL ACTIVITY OF IPOMEA KENTROCHULOS ON PATHOGENIC MICROORGANISMS AN!) MICROBIAL ISOLATES OF SPOILED VEGETABLES

Y. VIMALA, K.M. ELIZABETH, G. SRILAKSIIMI DEVI

Abstract

The antimicrobial activity of lpomea kentrochulos leaf extracts were tested on several pathogenic microorganisms and microbial isolates of spoiled vegetables by disc diffusion method. 7 he crude, cold methanol, distillate and residual extracts of lpomea kentrochulac were tried on various microorganisrm, The crude extract showed zones of inhibition ranging from 0.0 to 21 mm, with maximum activity against isolated Rhizopus species and least activity against serratia, yersinia, S. typhimurium, The zones of inhibition to cold methanol, residual extract and distillate ranged between 6-1.8 mm, 6-18 mm and 9-19 mm respectively suggesting that the distillate was more effective than the crude, cold and residual extracts of lpomea kentrochulos leaf extracts against various pathogens and Microbial isolates of spoiled vegetables tried. The minimal inhibitory concentration of Ipomea kentrochulw; residual extract was determined by tube dilution technique against different microbes which ranged between 50 - >800 pg/ml, indicating that Yersima enterocolitica was more sensitive as it showed less MIC. There results indicate that Ipomea kentrocludo$ leaf extract possessed potent antimicrobial activity.

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