Location: Mosquito and Fly ResearchTitle: Essential oil composition of Pimpinella cypria and its insecticidal, cytotoxic, and antimicrobial activity Author
|Tabanca, Nurhayat - University Of Florida|
|Dermici, Betul - Anadolu Universtiy|
|Nalbantsoy, Ayse - Ege University|
|Bernier, Ulrich - Uli|
|Agramonte, Natasha - University Of Florida|
|Ali, Abbas - Mississippi State University|
|Yalcin, Husniye - Ege University|
|Gucel, Salih - Near East University|
Submitted to: Natural Product Communications
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 5/21/2016
Publication Date: 10/28/2016
Citation: Tabanca, N., Dermici, B., Nalbantsoy, A., Bernier, U.R., Agramonte, N.M., Ali, A., Li, A.Y., Yalcin, H.T., Gucel, S. 2016. Essential oil composition of Pimpinella cypria and its insecticidal, cytotoxic, and antimicrobial activity. Natural Product Communications. 11(10):1531-1534.
Interpretive Summary: Scientists at the USDA-ARS Center for Medical, Agricultural and Veterinary Entomology, University of Florida, University of Mississippi, Cyprus, and Turkey collaborated to identify chemicals in the oil of the Cyprus Burnet-saxifrage, which is plant similar to carrots and found in Cyprus. The essential oil of this shrub, and the chemicals in the oil, were tested for as repellents against Yellow fever mosquitoes (Aedes aegypti). Based on the results of the study, the oil was six times less repellent than the standard repellent DEET. The oil also was shown to kill mosquito larvae. The results of this study benefit people at risk of mosquito attack throughout the world, and may be of specific use to researchers and commercial entities that are developing new repellents for personal protection from mosquito attack.
Technical Abstract: A water-distilled essential oil from the aerial parts of Pimpinella cypria Boiss. (Apiaceae), an endemic species in northern Cyprus, was analyzed by GC and GC-MS. Forty-five compounds were identified in the oil and these comprised 81.7% of the total composition. The compound classes in the oil were oxygenated sesquiterpenes (33.9%), sesquiterpenes (22.0%), monoterpenes (11.4%), oxygenated monoterpenes (2.6%) and phenylpropanoids (7.5%). The specific compounds of the oil were (Z)-ß-farnesene (6.0%), spathulenol (5.9%), ar-curcumene (4.3%) and 1,5-epoxy-salvial(4)14-ene (3.8%). The P. cypria oil deterred the yellow fever mosquitoes (Aedes aegypti) from biting at a concentration of 100 µg/cm2 in the in vitro bioassays. The oil was tested for repellency in assays using human volunteers. The oil had a minimum effective dosage (MED) for repellency of 47 ± 41 µg/cm2 against Ae. aegypti, which was about 6 times higher (less efficacious) than positive control N,N-diethyl-3-methylbenzamide (DEET), which had a MED of 8 ± 3 µg/cm2). In larval bioassays, P. cypria oil had a LC50 value of 5.4 ppm against 1st instar Ae. aegypti larvae.