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Chemical Composition of the Leaf and Flower Essential Oils of Tunisian Lavandula dentata L. (Lamiaceae)
Author(s) -
Touati Bechir,
Chograni Hnia,
Hassen Imed,
Boussaïd Mohamed,
Toumi Lamjed,
Brahim Nadia Ben
Publication year - 2011
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.201000357
Subject(s) - lamiaceae , essential oil , camphor , lavandula , composition (language) , botany , chemistry , chemical composition , horticulture , biology , lavender , organic chemistry , linguistics , philosophy
Essential oils of Lavandula dentata , a Tunisian native plant, were isolated from leaves and flowers by hydrodistillation in a Clevenger ‐type apparatus and characterized by GC‐FID and GC/MS analyses. The average essential oil yields, means of five replicates, were higher for the flowers (8.60 mg/g) than for the leaves (6.56 mg/g). A total of 72 compounds were identified, accounting for 98.1 and 97.7% of the total oil composition of the leaves and flowers, respectively. The main essential oil constituents were 1,8‐cineole, camphor, and L ‐fenchone, accounting for 33.54, 18.89, and 8.36% in the leaf oils and for 19.85, 23.33, and 7.13% in the flower oils, respectively. Besides this quantitative variation, the results also showed considerable qualitative variation between the essential oils of the two plant parts analyzed. These differences might be adaptative responses to ecological exigencies.