The Essential oil of Eucalyptus alba L. Growing on the Salt Zone of Fatick (Senegal) as a Source of 1,8Cineole and Their Antibacterial Activity

  • Yoro Tine Laboratoire de Chimie Organique et Thérapeutique, Faculté de Médecine, Pharmacie et Odontologie, Université Cheikh Anta Diop, BP: 5005 Dakar-Fann, Sénégal
  • Alioune Diallo
  • Abdoulaye Diop
  • Jean Costa
  • Cheikh Saad Bouh Boye
  • Alassane Wélé
  • Julien Paolini


Members of the genus Eucalyptus are potential sources of number of commercial essential oils and aromachemicals. In present study, the essential oils isolated by hydrodistillation from the leaves of Eucalyptus alba were analyzed by GC-FID and GC-MS. Essential oil yields ranged from 2.41 to 4.35%. In total 18 constituents were identified, accounting for 99.0 to 99.7% of the total compositions. 1,8-cineole was present in all samples as the major component (76.5-88.1%). In addition to this compound, others that were found including limonene (3.8–8.6%), α-terpineol (1.4–2.8%), globulol (1.3–6.3%) and α-pinene (1.5–1.8%). The essential oil showed a strong antibacterial activity against S. aureus ATCC 29213 which is translated by an MIC of 1.25 mg/mL and good activity against E. coli ATCC 25922 (6.25 mg/mL) and E. faecalis ATCC 29212 (6.25 mg/mL). To our knowledge, our study is the first report of E. alba essential oils characterized by a high 1,8-cineole content (>76.5%). They may have potential applications in food and pharmaceutical products.

Keywords: Eucalyptus alba, essential oils, antibacterial activity, 1,8-cineole and GC-SM

Keywords: Eucalyptus alba, essential oils, antibacterial activity, 1,8-cineole and GC-SM


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Tine Y, Diallo A, Diop A, Costa J, Boye CSB, Wélé A, Paolini J. The Essential oil of Eucalyptus alba L. Growing on the Salt Zone of Fatick (Senegal) as a Source of 1,8Cineole and Their Antibacterial Activity. JDDT [Internet]. 15Feb.2020 [cited 4Jun.2020];10(1-s):140-3. Available from:

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