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September 10, 2025

Pesticidal activity of piperine against Lipaphis erysimi (Mustard aphid) and Meloidogyne incognita (Root knot nematode)

Key Points

Piperine exhibited significant insecticidal activity against Lipaphis erysimi, with mortality between 24.0% and 84.3% over time.
At 300 ppm, piperine's effectiveness was comparable to dimethoate, achieving 99.0% mortality against mustard aphid.
The study isolated piperine from Piper longum using methanol extraction and identified it with spectroscopic techniques.
Results imply that piperine could serve as a natural solution for managing aphid and nematode pests in agriculture.

Abstract

AbstractThe piperine from fruits of Piper longum (Family: Piperaceae), commonly known as long pepper, was evaluated for aphidicidal (mustard aphid) and nematicidal (root knot nematode) activities. The powdered fruits of P. longum were defatted with hexane and extracted with methanol. Piperine was isolated from the methanolic extract by column chromatography and identified using different spectroscopic techniques (IR, NMR and MS). Piperine was evaluated against Lipaphis erysimi and M. incognita at 125 to 1000 ppm concentrations under laboratory conditions. Results showed the promising insecticidal activity of piperine against L. erysimi with mortality ranging from 24.0 to 84.3% after 24 to 72 h of treatment, compared to 99.0% at 300 ppm dimethoate. It also showed significant mortality (26.0 to 61.7%) of J2 of M. incognita, but less effective than fluopyrum (velum prime) at 25 ppm (66.0 to 99.0% mortality) after 24 to 96 h of treatment. These results suggests that piperine can be used at higher concentration as aphidicidal and nematicidal molecule of plant origin in agriculture.

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