TITLE:
Chemical Variability and Antibacterial Activity of Eucalyptus camaldulensis Essential Oils from Senegal
AUTHORS:
Yoro Tine, Alioune Diallo, Idrissa Ndoye, Cheikhouna Gaye, Benjamin Ndiaye, Abdoulaye Diop, Jean Costa, Cheikh Saad Bouh Boye, Alassane Wélé, Julien Paolini
KEYWORDS:
Eucalyptus camaldulensis, Essential Oils, Antibacterial Activity, 1, 8-Cineole and GC-SM
JOURNAL NAME:
International Journal of Organic Chemistry,
Vol.12 No.4,
December
2,
2022
ABSTRACT: 1,8-cineole, also known as eucalyptol, is the main constituent and the most important of the leaf oils of many species of the genus Eucalyptus. In present study, the essential oils isolated by hydrodistillation from the leaves of Eucalyptus camaldulensis from six different locations were analyzed by GC-FID and GC-MS. Essential oil yields ranged from 0.33% to 4.35%. In total, 34 constituents were identified, accounting for 94.0% to 99.8% of the total compositions. 1,8-cineole (46.4% - 84.4%) was the main constituent of all the essential oil samples, except for one sample collected in the Fatick region, which had p-cymene (46.4%) and 1,8-cineole (26.0%) as major compounds. The essential oil showed excellent activity against S. aureus, E. coli and E. faecalis (IZ = 25.3 ± 1.2 mm; 18.7 ± 0.6 mm; 17.8 ± 0.3 mm, respectively) and moderate activity against P. aeruginosa (IZ = 10.8 ± 0.8 mm). They may have potential applications in food and pharmaceutical products.