Antimicrobial Suscepibility Pattern of Escherichia Coli and Staphylococcus Aureus on Siam Weed Extract.

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The leaves of Chromolaena odarata (commonly called siam weed) which is an ancient remedy for the treatment of wounds and many ailments was tested for its antimicrobial activities on staphylococcus aureus and Escherichia coli at different concentrations. The agar pour plate method was used to test for its antimicrobial activity on the test isolate, the extracts of Chromolaena odorata was introduced directly into the well of the two tested organism. Laboratory study,shows that Chromolaena odorata (Siam weed) has antimicrobial action against these organisms. This research work establishes a good support to the use of these plants in herbal and as base for development of new drugs.

Chromoleana odorata (commonly called siam weed),is a diffuse rapidly growing and strongly scenting perennial shrub (phan,et al 2001).It grows widely in the south and western part of Nigeria, as well as in other parts of west Africa. The plant is used by traditional medicine practitioners in the treatment of many aliments (Gill, 1992).Some of the traditional uses of the leaves of this plant includes treatment of dysentery and headache. The concoction of the leaves with Azadracta indica, is used for the treatment of malaria fever. The juice of the leave (sometimes mixed with water) is used to stop bleeding. The healing property of the medicinal plants is usually linked with the presence of secondary metabolites and these differ from one plant to another. It has been reported that a substantial percentage (38%) of prescriptions, contained one or more of the natural product of plant origin, as the therapeutic agent (Farnsworth and bringel, 1997). The use of plant extracts chemically derived from plants to treat diseases has stood the test of time (Anwannil and atta, 2005). Suck(1989),had earlier reported that more than 75% pure compounds derived from higher plants are used in modern medicine and are now...
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