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2010•Journal of King Saud University - ScienceOpen access

Antifeedant and larvicidal activities of Acalypha fruticosa Forssk. (Euphorbiaceae) against Plutella xylostella L. (Lepidoptera: Yponomeutidae) larvae

S. Lingathurai, Subramanian Ezhil Vendan, Michael Gabriel Paulraj, S. Ignacimuthu

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Abstract

Antifeedant and larvicidal activities of hexane, chloroform and ethyl acetate extracts of Acalypha fruticosa Forssk. Leaves were studied using leaf disc no-choice method against third instar larvae of Plutella xylostella L. Chloroform extract showed maximum antifeedant activity of 92.8% at 5% concentration with a LC50 value of 1.86%. Nine fractions were collected from the chloroform extract (30 g) by silica gel column chromatography, among which the seventh fraction (eluted by 100% ethyl acetate) recorded maximum antifeedant activity (84.3%) at 1000 ppm concentration with a LC50 value of 385.7 ppm against the third instar larvae of P. xylostella. Preliminary phytochemical analysis of this effective fraction showed the presence of terpenoids, tannins, coumarins, anthraquinones and saponins.

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Antifeedant and larvicidal activities of hexane, chloroform and ethyl acetate extracts of Acalypha fruticosa Forssk. Leaves were studied using leaf disc no-choice method against third instar larvae of Plutella xylostella L. Chloroform extract showed maximum antifeedant activity of 92.8% at 5% concentration with a LC50 value of 1.86%. Nine fractions were collected from the chloroform extract (30 g) by silica gel column chromatography, among which the seventh fraction (eluted by 100% ethyl acetate) recorded maximum antifeedant activity (84.3%) at 1000 ppm concentration with a LC50 value of 385.7 ppm against the third instar larvae of P. xylostella. Preliminary phytochemical analysis of this effective fraction showed the presence of terpenoids, tannins, coumarins, anthraquinones and saponins.

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Available abstract

Antifeedant and larvicidal activities of hexane, chloroform and ethyl acetate extracts of Acalypha fruticosa Forssk. Leaves were studied using leaf disc no-choice method against third instar larvae of Plutella xylostella L. Chloroform extract showed maximum antifeedant activity of 92.8% at 5% concentration with a LC50 value of 1.86%. Nine fractions were collected from the chloroform extract (30 g) by silica gel column chromatography, among which the seventh fraction (eluted by 100% ethyl acetate) recorded maximum antifeedant activity (84.3%) at 1000 ppm concentration with a LC50 value of 385.7 ppm against the third instar larvae of P. xylostella. Preliminary phytochemical analysis of this effective fraction showed the presence of terpenoids, tannins, coumarins, anthraquinones and saponins.

Key concepts: Plutella, Ethyl acetate, Instar, Phytochemical, Anthraquinones, Terpenoid, Traditional medicine, Euphorbiaceae

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Antifeedant and larvicidal activities of Acalypha fruticosa Forssk. (Euphorbiaceae) against Plutella xylostella L. (Lepidoptera: Yponomeutidae) larvae — Research Paper | ScholarLens