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The volatile constituents of the essential oils from the flower, leaf, and stem of Verbascum wiedemannianum were analysed by GC and GC-MS. A total of forty-three compounds were identified, constituting over 99.1%, 94.3%, and 98.7% of oil composition of the flower, leaf, and stem of V. wiedemannianum, respectively. Hydrocarbons were shown to be the main group of constituents of the flower and stem part in the ratio of 83.3% and 32.1%, respectively. But, the major group in the leaf oil was found to be aldehydes (46.8%). The main components of the flower, leaf and stem oils of V. wiedemannianum were pentadecane (58.2%), (2E)-hexenal (33.2%), and hexadecanoic acid (24.6%), respectively.

The Volatile Constituents of the Flower, Leaf, and Stem of Verbascum wiedemannianum Grown in Turkey