Larvicidal Activity of Synthesized Silver Nanoparticles from Curcuma zedoaria Essential Oil against Culex quinquefasciatus

Abstract

Culex quinquefasciatus is the major vector of the bancroftian filarial parasite which causes human lymphatic filariasis and St. Louis encephalitis. The simple way to stop the transmission is to control the vector by using synthetic chemicals. However, herbal essential oils have biological properties, such as a larvicidal effect and are ecofriendly to use. In this study, we investigated the larvicidal activity of Curcuma zedoaria essential oil (ZEO) and biosynthesized silver nanoparticles using this essential oil (ZEO-AgNPs). The larvicidal activity against both insecticide-susceptible and -resistant strains of Cx. quinquefasciatus larvae of ZEO were investigated and compared with ZEO-AgNPs. The ZEO-AgNPs showed the utmost toxicity against both strains of Cx. quinquefasciatus. After 24 h of exposure, LC50 and LC99 of ZEO against susceptible strain were 36.32 and 85.11 ppm, respectively. While LC50 and LC99 of ZEO against the resistant strain were 37.29 and 76.79 ppm, respectively. Whereas ZEO-AgNPs offered complete larval mortality within 24 h of exposure, LC50 and LC99 of ZEO-AgNPs against the susceptible strain, were 0.57 and 8.54 ppm, respectively. For the resistant strain, LC50 and LC99 values were 0.64 and 8.88 ppm, respectively. The potency in killing Cx. quinquefasciatus and stability of ZEO-AgNPs have made this product a good candidate for the development of novel natural larvicides.

Silver/silver chloride (Ag/AgCl) nanoparticles synthesized from Azadirachta indica lalex and its antibiofilm activity against fluconazole resistant Candida tropicalis

“…Consequently, the plant extracts are eco-friendly, non-toxic and cost-effective for the synthesis of large scale NPs [12]. These biogenic SNPs are extensively used in antibacterial, antifungal, antiparasitic, larvacidal and anticancer activities [13][14][15][16][17].…”

Nanoencapsulation of Plant Volatile Organic Compounds to Improve Their Biological Activities

“…Gold reduction by plant VOCs originated from Artemisia vulgaris and Ferula persica has been achieved after incubation at ambient temperatures for 24 h [119,120]. Green synthesis of silver nanoparticles using plant VOCs has also been reported in several studies using plant VOCs as reducing agents [121,122].…”

Control of JE vector by organic compounds isolated and green nanoparticles synthesised from leaf extract of Holoptelea integrifolia (Roxb.)

“…Some phyto extracts have been shown as good ecofriendly larvicides, without hamparing lives of non-target organisms [15,16]. biosynthesized silver nanoparticles using Curcuma zedoaria essential oil [24].…”