The essential oils obtained from Anethum graveolens, Foeniculum vulgare collected at fully-mature and flowering stages, Mentha piperita, Mentha spicata, Lavandula officinalis, Ocimum basilicum (green- and purpleleaf varieties), Origanum onites, O. vulgare, O. munitifl orum, O. majorana, Rosmarinus officinalis, Salvia officinalis, and Satureja cuneifolia. | İ. ERDOĞAN ORHAN, B. ÖZÇELİK, M. KARTAL, Y. KAN Turk J Biol 36 (2012) 239-246 © TÜBİTAK doi: Antimicrobial and antiviral effects of essential oils from selected Umbelliferae and Labiatae plants and individual essential oil components İlkay ERDOĞAN ORHAN1,2, Berrin ÖZÇELİK3, Murat KARTAL4, Yüksel KAN5 1 Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara - TURKEY 2 Pharmacognosy and Pharmaceutical Botany Unit, Faculty of Pharmacy, Eastern Mediterranean University, Gazimağusa - TURKISH REPUBLIC OF NORTHERN CYPRUS 3 Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Gazi University, 06330 Ankara - TURKEY 4 Department of Pharmacognosy, Faculty of Pharmacy, Ankara University, 06100 Ankara - TURKEY 5 Department of Field Crops, Faculty of Agriculture, Selçuk University, 42070 Konya - TURKEY Received: Abstract: The essential oils obtained from Anethum graveolens, Foeniculum vulgare collected at fully-mature and flowering stages, Mentha piperita, Mentha spicata, Lavandula officinalis, Ocimum basilicum (green- and purpleleaf varieties), Origanum onites, O. vulgare, O. munitiflorum, O. majorana, Rosmarinus officinalis, Salvia officinalis, and Satureja cuneifolia, as well as the widely encountered components in essential oils (γ-terpinene, 4-allylanisole, (-)-carvone, dihydrocarvone, D-limonene, (-)-phencone, cuminyl alcohol, cuminyl aldehyde, cuminol, trans-anethole, camphene, isoborneol, (-)-borneol, L-bornyl acetate, 2-decanol, 2-heptanol, methylheptane, farnesol, nerol, isopulegol, citral, citronellal, citronellol, geraniol, geranyl ester, linalool, linalyl oxide, linalyl ester, α-pinene, β-pinene, piperitone, (-)-menthol, isomenthone, carvacrol, thymol, vanillin, and eugenol), were screened for their antiviral activity against Herpes simplex type-1 (HSV-1) and parainfluenza type-3 (PI-3). Cytotoxicity was expressed as cytopathogenic effect. Most of the oils and compounds displayed strong .