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Chemical composition of five Tunisian Pinus Species' essential oils and effect of their blends on Otitis infection

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Abstract
Many studies reported the chemical composition and the biological activities of Pinus Essential oils (EOs). A few of them were investigated for their antibacterial activity against strains responsible for otitis. The present paper investigated the variation of the chemical composition and the antibacterial activity of the EOs of five Tunisian Pinus species and of their combinations against six bacterial strains responsible for otitis. The EOs' yields varied from 0.3 +/- 0.1% for P. pinea to 1.8 +/- 0.4% for P. halepensis. Their chromatographic analyses by GC and GC-MS identified 139 components varying according to the species. The main components were beta-pinene followed by trans-caryophyllene, germacrene D, alpha-pinene, beta-myrcene, palustradiene, abieta-7,13-triene, levopimaradiene, thunbergol, and caryophyllene oxide. Four chemical groups were identified basing on the PCA and the HCA of the 25major's components of the studied EOs. However, three subgroups were identified within the antibacterial-based PCA and HCA analyses. The highest antibacterial activity was observed with the blends of oils extracted from P. halepensis and P. canariensis and mixture of oils extracted from P. brutia and P. canariensis. These EOs blends may constitute promising antibiotic alternatives for the treatment of the otitis media.
Keywords
CHEMICAL-COMPOSITION, ANTIOXIDANT ACTIVITIES, ANTIBACTERIAL ACTIVITY, ANTIMICROBIAL ACTIVITY, HALEPENSIS MILL., NEEDLE OIL, PINASTER, MECHANISM, BACTERIA, PINEA, Pinus essential oils, Antibacterial activity, Otitis Principal Component, Analysis (PCA), Hierarchical Cluster Analysis (HCA)

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MLA
Ameur, Elaissi, et al. “Chemical Composition of Five Tunisian Pinus Species’ Essential Oils and Effect of Their Blends on Otitis Infection.” INDUSTRIAL CROPS AND PRODUCTS, vol. 180, 2022, doi:10.1016/j.indcrop.2022.114688.
APA
Ameur, E., Sarra, M. E., Takoua, K., Mariem, K., Nabil, A., Lynen, F., & Larbi, K. M. (2022). Chemical composition of five Tunisian Pinus Species’ essential oils and effect of their blends on Otitis infection. INDUSTRIAL CROPS AND PRODUCTS, 180. https://doi.org/10.1016/j.indcrop.2022.114688
Chicago author-date
Ameur, Elaissi, Moumni Essahli Sarra, Khtatfa Takoua, Kouja Mariem, Abid Nabil, Frederic Lynen, and Khouja Mohamed Larbi. 2022. “Chemical Composition of Five Tunisian Pinus Species’ Essential Oils and Effect of Their Blends on Otitis Infection.” INDUSTRIAL CROPS AND PRODUCTS 180. https://doi.org/10.1016/j.indcrop.2022.114688.
Chicago author-date (all authors)
Ameur, Elaissi, Moumni Essahli Sarra, Khtatfa Takoua, Kouja Mariem, Abid Nabil, Frederic Lynen, and Khouja Mohamed Larbi. 2022. “Chemical Composition of Five Tunisian Pinus Species’ Essential Oils and Effect of Their Blends on Otitis Infection.” INDUSTRIAL CROPS AND PRODUCTS 180. doi:10.1016/j.indcrop.2022.114688.
Vancouver
1.
Ameur E, Sarra ME, Takoua K, Mariem K, Nabil A, Lynen F, et al. Chemical composition of five Tunisian Pinus Species’ essential oils and effect of their blends on Otitis infection. INDUSTRIAL CROPS AND PRODUCTS. 2022;180.
IEEE
[1]
E. Ameur et al., “Chemical composition of five Tunisian Pinus Species’ essential oils and effect of their blends on Otitis infection,” INDUSTRIAL CROPS AND PRODUCTS, vol. 180, 2022.
@article{8758427,
  abstract     = {{Many studies reported the chemical composition and the biological activities of Pinus Essential oils (EOs). A few of them were investigated for their antibacterial activity against strains responsible for otitis. The present paper investigated the variation of the chemical composition and the antibacterial activity of the EOs of five Tunisian Pinus species and of their combinations against six bacterial strains responsible for otitis. The EOs' yields varied from 0.3 +/- 0.1% for P. pinea to 1.8 +/- 0.4% for P. halepensis. Their chromatographic analyses by GC and GC-MS identified 139 components varying according to the species. The main components were beta-pinene followed by trans-caryophyllene, germacrene D, alpha-pinene, beta-myrcene, palustradiene, abieta-7,13-triene, levopimaradiene, thunbergol, and caryophyllene oxide. Four chemical groups were identified basing on the PCA and the HCA of the 25major's components of the studied EOs. However, three subgroups were identified within the antibacterial-based PCA and HCA analyses. The highest antibacterial activity was observed with the blends of oils extracted from P. halepensis and P. canariensis and mixture of oils extracted from P. brutia and P. canariensis. These EOs blends may constitute promising antibiotic alternatives for the treatment of the otitis media.}},
  articleno    = {{114688}},
  author       = {{Ameur, Elaissi and Sarra, Moumni Essahli and Takoua, Khtatfa and Mariem, Kouja and Nabil, Abid and Lynen, Frederic and Larbi, Khouja Mohamed}},
  issn         = {{0926-6690}},
  journal      = {{INDUSTRIAL CROPS AND PRODUCTS}},
  keywords     = {{CHEMICAL-COMPOSITION,ANTIOXIDANT ACTIVITIES,ANTIBACTERIAL ACTIVITY,ANTIMICROBIAL ACTIVITY,HALEPENSIS MILL.,NEEDLE OIL,PINASTER,MECHANISM,BACTERIA,PINEA,Pinus essential oils,Antibacterial activity,Otitis Principal Component,Analysis (PCA),Hierarchical Cluster Analysis (HCA)}},
  language     = {{eng}},
  pages        = {{13}},
  title        = {{Chemical composition of five Tunisian Pinus Species' essential oils and effect of their blends on Otitis infection}},
  url          = {{http://doi.org/10.1016/j.indcrop.2022.114688}},
  volume       = {{180}},
  year         = {{2022}},
}

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