Plant extracts Leaves, stem bark and/or root of ten medicinal plants fromwere macerated by n-hexane, ethyl acetate and ethanol at roomtemperature, successively (Table 1). The n-hexane macerationof the plants yielded 0.45–8.01% extracts on the basis of sampledry weight. C. excavata root gave the lowest yield, while A.monosperma leaves yielded the highest percentage of extract.The ethyl acetate maceration gave 0.55–10.63% extracts on thebasis of sample dry weight. L. quadrinervia root yielded thelowest percentage of extract, while the highest one was obtainedfrom Chromolaena odorata leaves. The ethanol maceration gave1.88–20.19% extracts. A. cinnamomea leaves gave the lowestpercentage of extract, while the highest percentage was obtainedby H. capitata root.