微生物与生化技术杂志

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Antimicrobial Activity of Various Extracts of Taraxacum officinale

Amin Mir M, Sawhney SS and Manmohan Singh Jassal

The antimicrobial property of Taraxacum officinale plant extracts has been carried out by Agar Well Diffusion method. Five types of microbial strains viz. (Streptococcus mutans, Streptococcus pyogenes, Streptococcus pneumonia, Streptococcus aureus and Pseudomonas aeruginosa) have been used for the estimation of the antimicrobial effect of Taraxacum officinale. The DCM, ethyl acetate, methanol and water extracts of stem, root and flower of Taraxacum officinale gave the varying values of IZD, on their application against the microorganisms with the safe conclusion on the fact that the solvents could extract the different bio-organics varying in number and antimicrobial potential(s). The concentration increase of the extracts resulted in the increase of IZD values resulting in the increase in the antimicrobial activities of the extracts. Among all the plant extracts, the methanolic extracts were found to bear the highest antimicrobial potential against all bacterial strains, followed by the Ethyl acetate extracts of the plant. The DCM extracts were found to possess the antimicrobial potential in between ethyl acetate extracts and the water extracts. The water extracts were found to have little influence on the growth of micro-organisms. Among the plant parts observed, roots were observed to be more effective in inhibiting the growth of micro-organisms followed by flower extracts. The stem extracts have a little effect upon the growth of micro-organisms.