Chemical Composition and Repellent Activity of Methyl Cinnamate-Rich Basil (Ocimum basilicum) Essential Oil

Basil (Ocimum basilicum L.) is an important culinary herb and essential oil source widely recognized worldwide. The of the plant beneficial for medicinal uses, it has many biological activities such as insect repellent, larvicidal, bactericidal. This study aimed to investigate basil's its chemical composition repellent activity. basil was extracted from fresh leaves by steam distillation method, determined using GC/MS. Also, activity tested against American cockroaches. Ebeling Choice-Box test with a little modification used in repellence test. obtained results revealed that amount contained forty-one constituents (~97.1%); major were methyl cinnamate (25.3%), linalool (19.1%) estragole (12.3%) oxygenated monoterpenes. While α-bergamoten (5.3%), germacrene (4.6%), γ-cadinene (2.8%), β-elemene (2.4%) main compounds sesquiterpene hydrocarbons. Whereas, sesquiterpenes, Tau-cadinol (4.3%) ocimene highest compound monoterpene also indicated had good P. American, at 100% concentration oil; reaches after 1 h. IC50 IC90 values Americans 53.0 83.0%, respectively. which exists very could be wide area industrial applications products, cosmetics.