Abstract
The essential oils of the Tunisian Allium roseum flowers and stems gathered in the region of Monastir and obtained by hydrodistillation with 0.012% and 0.002% yield, respectively, were analyzed by GC and GC-MS. Some significant differences were found between the constituent percentages of flowers and stems essential oils. Ten sulphur compounds representing 60.97% of the total constituents have been identified in the flower oil. The main components found in this organ were allyl methyl disulphide (16.06%) and diallyl disulphide (16.57%). Six sulphur compounds representing 11.2% of all the components of the stem volatile fraction were characterized. The latter was rich in fatty acid esters, they represent 65.23% of all its components. Flowers oil was richer in sulphur compounds than stems oil and the two main sulphur compounds allyl methyl disulphide and diallyl disulphide in the flowers oil did not exist in significant amount in the case of stems oil.
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