In Vivo |
The insecticidal activity of crude essential oil extracted from Cymbopogon schoenanthus and of its main constituent, Piperitone, is assessed on different developmental stages of Callosobruchus maculatus (C. maculatus). Piperitone is toxic to C. maculatus adults with a LC50 value of 1.6 μL/L. Piperitone inhibits the development of newly laid eggs and of neonate larvae, but is less toxic than the crude extract to individuals developing inside the seeds. Piperitone shows the strongest ovicidal activity. All the eggs were aborted at 6.7 μL/L. Piperitone (10 μM) kills all the neonate larvae[1]. Animal Model: Fifty pairs of C. maculatus adults[1] Dosage: 6.7, 10, 16.7 or 33.3 μL/L Administration: 24 hours Result: Piperiton was more toxic than crude oil because the LC50 recorded was 1.6 μL/L for Piperitone vs. 2.7 μL/L for the crude oil.
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