The antibacterial activity of essential oils from fifteen Eucalyptus species taken from the Jbel Abderrahman and Korbous arboreta (North East Tunisia) was tested using the agar disc diffusion method. The activity of Eucalyptus essential oils differed considerably between species and strains. Eighteen key components were chosen for a study of chemical and biological activity variations using GC/FID and GC/MS. Spathulenol, trans-pinocarveol, -pinene, p-cymene, globulol, cryptone, -phellandrene, viridiflorol, and borneol were the most common. Isospathulenol with limonene The chemical principal component analysis identified five species groups and subgroups, each of which was a chemotype; however, the values of zone diameter of inhibition (zdi) identified six groups of Eucalyptus oils, each of which was characterized by its ability to inhibit bacteria. E. platypus oil had the most activity against Enterococcus faecalis and E. lamannii oil had the most action against Staphylococcus aureus, Pseudomonas aeruginosa, and Escherichia coli. There was a link found between the amounts of some key components and antibacterial activity.
Author (s) Details
Ameur Elaissi
Laboratory of Pharmacognosy, Faculty of Pharmacy, University of Monastir,
Avenue Avicenne, Monastir 5019, Tunisia.
Zyed Rouis
Laboratory of Transmissible Diseases and Biologically Active Substances,
Faculty of Pharmacy, University of Monastir, Rue Avicenne, Monastir 5000,
Tunisia.
Samia Mabrouk
Laboratory of Genetic, Biodiversity and Bio-resources Valorisation, Higher
Institute of Biotechnology of Monastir, University of Monastir, Avenue Tahar
Haddad, Monastir 5000, Tunisia.
Karima Bel Haj Salah
Laboratory of Transmissible Diseases and Biologically Active Substances,
Faculty of Pharmacy, University of Monastir, Rue Avicenne, Monastir 5000,
Tunisia.
Mahjoub Aouni
Laboratory of Transmissible Diseases and Biologically Active Substances,
Faculty of Pharmacy, University of Monastir, Rue Avicenne, Monastir 5000,
Tunisia.
Mohamed Larbi Khouja
National Institute for Research on Rural Engineering, Water and Forestry,
Institution of Agricultural Research and Higher Education, BP. N.2, Ariana
2080, Tunisia.
Farhat Farhat
Laboratory of Analytical Chemistry, Faculty of Pharmacy, University of
Monastir, Avenue Avicenne, Monastir 5019, Tunisia.
Rachid Chemli
Laboratory of Pharmacognosy, Faculty of Pharmacy, University of Monastir,
Avenue Avicenne, Monastir 5019, Tunisia.
Laboratory of Genetic, Biodiversity and Bio-resources Valorisation, Higher Institute of Biotechnology of Monastir, University of Monastir, Avenue Tahar Haddad, Monastir 5000, Tunisia.
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