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VOL. 10, ISSUE 1 (2025)
Phytochemical screening and larvicidal efficacy of Elephantopus scaber and Portulaca oleracea leaf extracts against mosquito vector Aedes aegypti
Authors
Rushikesh G Pawar, Pulikeshi M Biradar
Abstract
With an aim to develop chemical free and environment friendly mosquito
biocontrol agent, two plant species, Elephantopus scaber and Portulaca
oleracea were selected as these plants show high degree anti microbial and
mosquito larvicidal efficacy rates. The soxhlet extracts of above-mentioned
plants were extracted in polar solvents such as n-propanol and methanol.
Different concentrations were prepared to test the efficacy on late 3rd
and early 4th instar larvae of Aedes aegypti. n-propanol
extract of E. scaber showed LC50 value of 49.351 ppm at 24 hrs
exposure whereas the methanolic extract is of 31.517 ppm. Similaraly,
methanolic extract of the P. oleracea had less LC50 value of
56.285 ppm than that of
n-propanol extract (74.862 ppm) at 24 hrs exposure. The maximum larvicidal efficacy is shown by the methanolic extracts as compared to n-propanolic extracts in both the plants at 24 and 48 hrs of exposure. All the samples were also subjected to phyto-chemical screening for secondary metabolites and other chemicals like terpenoids, flavonoids, phenols, triterpenoids, fatty acids, alcohols, proteins etc. The GC-MS analysis of different leaf extracts have shown various active constituents, n-Propanol and methanol extracts of E. scaber showed 18 and 19 compounds respectively while P. oleracea leaf extract sowed 10 compounds in n-propanol and 11 in methanol extracts.
n-propanol extract (74.862 ppm) at 24 hrs exposure. The maximum larvicidal efficacy is shown by the methanolic extracts as compared to n-propanolic extracts in both the plants at 24 and 48 hrs of exposure. All the samples were also subjected to phyto-chemical screening for secondary metabolites and other chemicals like terpenoids, flavonoids, phenols, triterpenoids, fatty acids, alcohols, proteins etc. The GC-MS analysis of different leaf extracts have shown various active constituents, n-Propanol and methanol extracts of E. scaber showed 18 and 19 compounds respectively while P. oleracea leaf extract sowed 10 compounds in n-propanol and 11 in methanol extracts.
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Pages:163-170
How to cite this article:
Rushikesh G Pawar, Pulikeshi M Biradar "Phytochemical screening and larvicidal efficacy of <i>Elephantopus scaber</i> and <i>Portulaca oleracea</i> leaf extracts against mosquito vector <i>Aedes aegypti</i>". International Journal of Entomology Research, Vol 10, Issue 1, 2025, Pages 163-170
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