Chemical and biological investigation of Eucalyptus cloeziana, E. citriodora, E. saligna, E. grandis and E. microcorys essential oils were evaluated. The essential oils analysis were performed by GC/MS and the antibacterial activity was assayed in vitro by using the agar diffusion method against Escherichia coli O:158, E. coli ATCC 8739, Staphylococcus aureus ATCC 6538 and Salmonella choleraeseus ATCC 10708. The essential oils of E. citriodora and E. grandis showed a major inhibitory activity against Gram negative bacteria.
Eucalyptus species; essential oils; antibacterial activity