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Keywords
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Azadirachta indica, Essential oil, Leaves, γ-elemene, Germacrene-B.
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Abstract
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Essential oil compositions of the leaves of Azadirachta indica growing in the
tropical areas in the south of Iran was obtained by hydrodistillation and analysed by GC and GC-MS.
The oil yield of air dried leaves was 0.1 % (w/w). Total of 16 components represented 96.2 % of the
total oil were identified. The major components of the oil were: γ-elemene (20.8 %), germacrene-B
(20.3%), trans-caryophyllene (13.5 %), hexadecanal (12.8 %), and methyl linoleat (10.5 %). The
classification of indentified compounds showed that the sesquieterpene hydrocarbons (69.0 %)
constituted the major fraction of the oil, followed by oxygenated sesquiterpens (1.4 %). However,
other compounds comprised 25.9 % of the total constituents.
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