Abstract
The chemical composition of the essential oil from scutellaria wightiana benth was determined by GC-MS analysis. The essential oil consist of 17 compounds comprising sesquterpenoids(40.83%), oxygenated monoterpenes (16.5%) and monoterpenes(0.69%). Linoleic acid 1 was isolated from the methanolic extract and characterized by IR, NMR and MS spectral methods. Larvicidal activity of the essential oil against the larva Aedes eagypti was studied on different concentration of essential oil solution. The essential oil showed a LC 50 value of 47 ppm. Methanol extract of S.wightiana showed antioxidant activity with IC50 value of 60 μg/ml and 62 μg/ml for DPPH and ABTS scavenging assays respectively.