Potentiation of Mucuna pruriens (L.) DC. for insecticidal activity, insect repellency and brine shrimp lethality tests under the laboratory conditions
Samama Begum Chhabi, Mohammad Abdullah, Kamrul Hasan, Kaniz Tasnova, Morium Khatun and Nurul Islam
Aerial part, fruit and root extracts of Mucuna pruriens (L.) DC. were obtained with petroleum ether, chloroform and methanol and evaluated for their insecticidal and insect repellent activity against the adult beetles of Tribolium castaneum (Hbst.) and cytotoxic activity against Artemia salina L. nauplii. The chloroform extract of fruit found most effective with LD50 0.534mg cm-2 followed by the petroleum ether and methanol extracts of root with LD50 0.814and 1.056mg cm-2 after 48 hours of exposure. Petroleum ether and chloroform extracts of the fruit and methanol extract of the aerial part showed repellent activity against the adult beetles at 5% level of significance (P<0.05). The same extracts responded through (Cytotoxicity) brine shrimp lethality assay while the methanol extract of aerial part found most effective (LC50 12.793ppm)followed by the petroleum ether extract of root and chloroform extract of fruit with LC50 24.414 and 25.208ppm after 30h of exposure.