Comparison of the Essential Oils of L., Peşmen and Quézel, and Petrov and Their Antimicrobial Activity.

Objectives: To determine the chemical composition and antimicrobial activity of the essential oils of the aerial parts of L., roots of Peşmen and Quézel, and aerial parts of Petrov.

Materials And Methods: Essential oils were analyzed by gas chromatography and gas chromatography/mass spectrometry. The antimicrobial activity of the essential oils was determined by bioautography assay.

Results: α-Pinene (75.9%) and β-pinene (3.4%) were the major components of the aerial parts of ; with limonene (28.9%), α-pinene (15.6%), and terpinolene (13.9%) for ; and β-caryophyllene (31.4%) and caryophyllene oxide (23.1%) for the aerial parts of . Essential oils from the aerial parts of , the roots of , and the aerial parts of were active against and strains. However, essential oils were not active against or .

Conclusion: The antimicrobial activities against and of these species may be attributed to the presence of the main components in the essential oils.