Abstract
Aerial part of Semecarpus kathalekanensis Dasappa were subjected for soxhlet extraction by using solvents petroleum ether, chloroform, ethanol and distilled water. The preliminary phytochemical analysis of extracts showed the presence of alkaloids, glycosides, flavonoids, steroids, saponins and tannins. The antifeedant activity of extracts was studied at 4% and 2% concentrations respectively; on third instar larvae of Teak defoliator, Hyplaea puera. The ethanol and distilled water extracts showed maximum antifeedant activity and gave over 85 per cent protection of Teak leaves, followed by petroleum ether extract from Hyblaea puera. The result indicated that the ethanol and distilled water extracts have maximum antifeedant activity. The chloroform extract has shown moderate antifeedant activity.
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