chemical composition and antibacterial activity of the essential oil of lavandula angustifolia isolated by solvent free microwave assisted extraction and hydrodistillation

abstract: chemical composition of lavandula angustifolia was studied by solvent free microwave extraction (sfme) and hydrodistillation (hd) methods. 1, 8-cineole (42.7% and 37.9%), camphor (26.1% and 21.3%) and borneol (31.2% and 21.6%) were the major compounds that obtained by sfme and hydrodistillation, respectively. the antibacterial activity of extracted oils was investigated against gram-positive bacteria bacillus subtilis (b-sub) atcc 6633 and gram-negative bacteria escherichia coli (e-coli) atcc 8739. the minimum inhibitory concentration (mic) of the essential oils isolated by hydrodistillation and sfme was the same.   keywords: lavandula angustifolia, solvent free microwave extraction, hydrodistillation, antibacterial activity.