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Abstract
Lemon grass oil obtained by the steam distillation of the fresh aerial parts of Cymbopogon citratus (DC.) Stapf was investigated for antibacterial activity. The results obtained suggests that the oil possesses rapid bactericidal activity against Gram-negative and Gram-positive bacteria, the latter being more susceptible. Other factors that could affect the activity of the oil were also investigated. The dispersion of the oil in a dilution of dimethyl sulphoxide which does not have an effect on the microorganisms studied provided a convenient medium for the assay. It is being suggested that more information about the antibacterial activity of essential oils could be obtained using such a methodology.