Larvicidal activity of pectolinaringenin from Clerodendrum phlomidis L. against Culex quinquefasciatus Say and Aedes aegypti L. (Diptera: Culicidae).

Parasitology Research
Chellaiah MuthuSavarimuthu Ignacimuthu

Abstract

Larvicidal activity of 12 fractions and a compound of chloroform extract of Clerodendrum phlomidis L. (Lamiaceae) was assayed for their toxicity against the early fourth-instar larvae of the filarial vector Culex quinquefasciatus Say and dengue vector Aedes aegypti L. The fractions were tested at 100-, 50-, 25- and 12.5-ppm concentrations. The compound pectolinaringenin was tested at 5-, 2.5-, 1.0- and 0.5-ppm concentrations. Among the different fractions, fraction 5 recorded the lowest LC(50) and LC(90) values of 5.02, 61.63 ppm and 32.86, 73.62 ppm against C. quinquefasciatus and A. aegypti, respectively. The compound pectolinaringenin showed the lowest LC(50) and LC(90) values of 0.62, 2.87 ppm and 0.79, 5.31 ppm against C. quinquefasciatus and A. aegypti, respectively. This is the first report on the mosquito larvicidal activity of the isolated compound pectolinaringenin from C. phlomidis. The results of this study show that the chloroform extract of C. phlomidis can be used as a potent source and pectolinaringenin as a new natural mosquito larvicidal agent.

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Citations

Mar 31, 2015·Experimental Parasitology·Patrícia C Bezerra-SilvaLothar W Bieber
Apr 23, 2015·Asian Pacific Journal of Tropical Medicine·Appadurai Daniel ReeganSavarimuthu Ignacimuthu
Jun 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Jimena BorgoValeria P Sülsen

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