Plant secondary metabolites have been recently used for the synthesis of different nanoparticles. The present investigation aimed at evaluating the effect of gold (AuNPs) and silver (AgNPs) nanoparticles synthesized using Acalypha fruticosa leaf extracts to control the mosquito Culex pipiens. The A. fruticosa AuNPs and AgNPs spectra displayed their maximum absorption at 550 nm and 440 nm, respectively. The infrared spectra revealed different functional groups related to different chemical compounds. The larval mortality of aqueous leaf extract of A. fruticosa was 499.54 ppm (LC₅₀) and 1734.06 ppm (LC₉₀) after 24 h of treatment. This study revealed that AuNP (LC₅₀, 30.2 and LC₉₀, 104.83 ppm) and AgNP (LC₅₀, 52.86 and LC₉₀, 157.227 ppm) preparations were highly effective compared to the A. fruticosa extract alone and also more affordable, as a smaller amount was required. The present findings show the potential larvicidal effect of the synthesized AuNPs and AgNPs for the control of mosquito-mediated disease transmission.

植物次生代谢物最近已用于合成不同的纳米颗粒。旨在评估的金（金纳米粒子）和银（的AgNPs）的影响本研究中使用的纳米颗粒合成的铁苋菜紫穗槐叶提取物来控制蚊淡色库蚊。所述紫穗槐的AuNP和光谱分别在550nm和440nm下，其显示的最大吸收的AgNPs。红外光谱揭示了与不同化合物有关的不同官能团。的水叶提取物的幼虫死亡率紫穗槐为499.54 PPM（LC ₅₀）和1734.06 PPM（LC ₉₀处理24小时后）。这项研究表明AuNP（LC ₅₀，30.2和LC ₉₀，104.83 PPM）和AgNP（LC ₅₀，52.86和LC ₉₀相比，157.227 PPM）制备物高度有效的紫穗槐单独和还更实惠提取物，正如所需要的量较小。目前的发现表明，合成的AuNPs和AgNPs对控制蚊子介导的疾病传播具有潜在的杀幼虫作用。