Publisher: Chemical Society of Nigeria

Essential Oil Composition and Biological Activity of Cymbopogon Citratus From Keffi, Nigeria

A. Olonisakin
KEYWORDS: Essential oil, Cymbopogon citratus, activity, repellency, toxicity, formulations.


The chemical composition of the Essential oil obtained by hydro distillation from aerial parts of Cymbopogon citratus growing in Keffi, Nigeria was analysed by GC/MS. Fifty five components were identified representing 98.62% of the total oil composition. The major components were Limonene (92.1%), β-myrcene (1.40%), citronellal (1.40%). The essential oil was tested against; Staphylococcus aureus, streptococcus pyogenes, klebsiella pneumonia, bacillus subtilis and pseudomonas aeruginosa using serial dilution method, the results obtained show that the essential oil inhibited the growth of klebsiella pneumonia and streptococcus pyogenes by 4 and 19mm zone of inhibition respectively but no activity against others. Repellency, toxicity and formulations against Callosobrochus maculatus was also carried out. The repellency and toxicity was found to be concentration dependent and the activity of the formulations was found to reduce with time, with kaolin having a less releasing profile than bentonite as carrier.

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