Abstract
The hydrodistilled essential oil of crushed Bulnesia sarmienti Lorenz (Gaiac Wood) is analyzed by GC/MS. 14 compounds; representing 83.09% of the essential oil were identified. A rectified fraction of this oil (heart fraction) is cleared from head and tail compounds for olfactive purposes. The main components of the two oils were bulnesol (36-44%) and guaiol (27-34%). The two oils exhibited significant antimicrobial activity against Gram-positive but none against Gram-negative bacteria. This activity is enhanced in the rectified fraction. Gaiac Wood essential oils activity is compared with the well-known Melaleuca alternifolia L. (Tea Tree) essential oil which proved to be less efficient on Gram+ strains.
Résumé
L’huile essentielle hydrodistillée obtenue à partir de Bulnesia sarmienti L. broyé (Bois de Gaiac) est analysée par GC/MS. Quatorze composés, représentant 83,09% de l’huile essentielle, ont été identifiés. Une fraction rectifiée de cette huile (fraction coeur) est débarrassée des composés de tête et de queue pour raisons olfactives. Les principaux constituants des deux huiles sont le bulnesol (36-44%) et le guaiol (27- 34%). Les deux huiles présentent une activité antimicrobienne significative contre les bactéries de souche Gram+, mais aucune contre les bactéries de souche Gram-. L’activité de l’huile essentielle de Bois de Gaiac est comparée avec celle, bien connue, de l’huile essentielle de Melaleuca alternifolia (arbre à thé) qui s’avère être moins efficace sur les souches Gram+.
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Pegard, A. Antimicrobial activity of essential oil of Bulnesia sarmienti Lorenz (Gaiac Wood) and of a rectified fraction of this oil. Comparison with Melaleuca alternifolia L. (Tea Tree) essential oil activity. Phytothérapie 13, 384–388 (2015). https://doi.org/10.1007/s10298-015-0966-7
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DOI: https://doi.org/10.1007/s10298-015-0966-7