Chemical composition and antibacterial activities of seven Eucalyptus species essential oils leaves

BACKGROUND: In this paper, we have studied the essential oils chemical composition of the leaves of seven Eucalyptus species developed in Tunisia. Eucalyptus leaves were picked from trees growing in different arboretums in Tunisia. Choucha and Mrifeg arboretums located in Sedjnene, region of Bizerte...

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Autores principales:	Sebei,Khaled, Sakouhi,Fawzi, Herchi,Wahid, Khouja,Mohamed Larbi, Boukhchina,Sadok
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2015
Materias:	Eucalyptus Essential oil Antibacterial activity -pinene
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100007
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spelling	oai:scielo:S0716-976020150001000072016-02-16Chemical composition and antibacterial activities of seven Eucalyptus species essential oils leavesSebei,KhaledSakouhi,FawziHerchi,WahidKhouja,Mohamed LarbiBoukhchina,Sadok Eucalyptus Essential oil Antibacterial activity -pinene BACKGROUND: In this paper, we have studied the essential oils chemical composition of the leaves of seven Eucalyptus species developed in Tunisia. Eucalyptus leaves were picked from trees growing in different arboretums in Tunisia. Choucha and Mrifeg arboretums located in Sedjnene, region of Bizerte (Choucha: E. maideni, E. astrengens et E. cinerea; Mrifeg : E. leucoxylon), Korbous arboretums located in the region of Nabeul, North East Tunisia with sub-humid bioclimate, (E. lehmani), Souiniet-Ain Drahem arboretum located in region of Jendouba (E. sideroxylon, E. bicostata). Essential oils were individually tested against a large panel of microorganisms includingStaphylococcus aureus (ATCC 6539), Escherichia coli (ATCC 25922), Enterococcus faecalis (ATCC29212), Listeria ivanovii (RBL 30), Bacillus cereus (ATCC11778). RESULTS: The yield of essential oils ranged from 1.2% to 3% (w/w) for the different Eucalyptus species. All essential oils contain α-pinene, 1,8-cineol and pinocarveol-trans for all Eucalyptus species studied. The 1,8-cineol was the major compound in all species (49.07 to 83.59%). Diameter of inhibition zone of essential oils of Eucalyptus species varied from 10 to 29 mm. The largest zone of inhibition was obtained for Bacillus cereus (E. astrengens) and the lowest for Staphylococcus aureus (E. cinerea). The essential oils from E. maideni, E. astrengens, E. cinerea (arboretum of Bizerte), E. bicostata(arboretum of Aindraham) showed the highest antibacterial activity against Listeria ivanovii and Bacillus cereus. CONCLUSION: The major constituents of Eucalyptus leaves essential oils are 1,8-cineol (49.07 to 83.59%) and α-pinene (1.27 to 26.35%). The essential oils from E. maideni, E. astrengens, E. cinerea, E. bicostatashowed the highest antibacterial activity against Listeria ivanovii and Bacillus cereus, they may have potential applications in food and pharmaceutical products.info:eu-repo/semantics/openAccessSociedad de Biología de ChileBiological Research v.48 20152015-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100007en10.1186/0717-6287-48-7
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Eucalyptus Essential oil Antibacterial activity -pinene
spellingShingle	Eucalyptus Essential oil Antibacterial activity -pinene Sebei,Khaled Sakouhi,Fawzi Herchi,Wahid Khouja,Mohamed Larbi Boukhchina,Sadok Chemical composition and antibacterial activities of seven Eucalyptus species essential oils leaves
description	BACKGROUND: In this paper, we have studied the essential oils chemical composition of the leaves of seven Eucalyptus species developed in Tunisia. Eucalyptus leaves were picked from trees growing in different arboretums in Tunisia. Choucha and Mrifeg arboretums located in Sedjnene, region of Bizerte (Choucha: E. maideni, E. astrengens et E. cinerea; Mrifeg : E. leucoxylon), Korbous arboretums located in the region of Nabeul, North East Tunisia with sub-humid bioclimate, (E. lehmani), Souiniet-Ain Drahem arboretum located in region of Jendouba (E. sideroxylon, E. bicostata). Essential oils were individually tested against a large panel of microorganisms includingStaphylococcus aureus (ATCC 6539), Escherichia coli (ATCC 25922), Enterococcus faecalis (ATCC29212), Listeria ivanovii (RBL 30), Bacillus cereus (ATCC11778). RESULTS: The yield of essential oils ranged from 1.2% to 3% (w/w) for the different Eucalyptus species. All essential oils contain α-pinene, 1,8-cineol and pinocarveol-trans for all Eucalyptus species studied. The 1,8-cineol was the major compound in all species (49.07 to 83.59%). Diameter of inhibition zone of essential oils of Eucalyptus species varied from 10 to 29 mm. The largest zone of inhibition was obtained for Bacillus cereus (E. astrengens) and the lowest for Staphylococcus aureus (E. cinerea). The essential oils from E. maideni, E. astrengens, E. cinerea (arboretum of Bizerte), E. bicostata(arboretum of Aindraham) showed the highest antibacterial activity against Listeria ivanovii and Bacillus cereus. CONCLUSION: The major constituents of Eucalyptus leaves essential oils are 1,8-cineol (49.07 to 83.59%) and α-pinene (1.27 to 26.35%). The essential oils from E. maideni, E. astrengens, E. cinerea, E. bicostatashowed the highest antibacterial activity against Listeria ivanovii and Bacillus cereus, they may have potential applications in food and pharmaceutical products.
author	Sebei,Khaled Sakouhi,Fawzi Herchi,Wahid Khouja,Mohamed Larbi Boukhchina,Sadok
author_facet	Sebei,Khaled Sakouhi,Fawzi Herchi,Wahid Khouja,Mohamed Larbi Boukhchina,Sadok
author_sort	Sebei,Khaled
title	Chemical composition and antibacterial activities of seven Eucalyptus species essential oils leaves
title_short	Chemical composition and antibacterial activities of seven Eucalyptus species essential oils leaves
title_full	Chemical composition and antibacterial activities of seven Eucalyptus species essential oils leaves
title_fullStr	Chemical composition and antibacterial activities of seven Eucalyptus species essential oils leaves
title_full_unstemmed	Chemical composition and antibacterial activities of seven Eucalyptus species essential oils leaves
title_sort	chemical composition and antibacterial activities of seven eucalyptus species essential oils leaves
publisher	Sociedad de Biología de Chile
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100007
work_keys_str_mv	AT sebeikhaled chemicalcompositionandantibacterialactivitiesofseveneucalyptusspeciesessentialoilsleaves AT sakouhifawzi chemicalcompositionandantibacterialactivitiesofseveneucalyptusspeciesessentialoilsleaves AT herchiwahid chemicalcompositionandantibacterialactivitiesofseveneucalyptusspeciesessentialoilsleaves AT khoujamohamedlarbi chemicalcompositionandantibacterialactivitiesofseveneucalyptusspeciesessentialoilsleaves AT boukhchinasadok chemicalcompositionandantibacterialactivitiesofseveneucalyptusspeciesessentialoilsleaves
_version_	1718441529563938816

Chemical composition and antibacterial activities of seven Eucalyptus species essential oils leaves

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