Elumalai Devan, Hemavathi Maduraiveeran, Deepaa Chandrasekar Vijayalakshmi, Kaleena Patheri Kunyil
Department of Zoology, Presidency College (Autonomous), Chennai 600 005, Tamilnadu, India.
PG. Department of Zoology, Pachaiyappas College for Men, Kanchipuram 631 501, Tamilnadu, India.
Parasite Epidemiol Control. 2017 Sep 18;2(4):15-26. doi: 10.1016/j.parepi.2017.09.001. eCollection 2017 Nov.
The present study deals with the green synthesis of silver nanoparticle from the aqueous leaf extracts of and as reducing agent and to investigate the larvicidal activity of synthesized silver nanoparticles. The synthesized silver nanoparticles were characterized by Ultraviolet and visible absorption spectroscopy (UV), Fourier transform-infrared spectroscopy (FT-IR), X-ray spectroscopy (XRD), Field emission scanning electron microscope (FESEM) and High-resonance transmission electron microscopy (HRTEM) analysis. The nanoparticles are spherical, hexagonal, triangular and polyhedral in shape and the size of the Silver nanoparticles (AgNPs) of was found to be in the range of 722 nm and AgNPs of was 5-25 nm. Larvicidal bioassay with synthesized AgNPs synthesized from and extract, showed 100% mortality at 10 mg/L against , and with LC of 4.02, 4.69, 5.06 mg/L and LC of 11.22, 12.09, 12.74 mg/L and LC of 4.63, 4.04, 3.52 mg/L and LC of 12.07, 10.99, 09.61 respectively. These results suggest that the synthesized AgNPs of and have the potential to be used as an ideal eco-friendly agent for the control of the mosquito larvae.
本研究涉及以[植物名称1]和[植物名称2]的水叶提取物作为还原剂绿色合成银纳米颗粒,并研究合成的银纳米颗粒的杀幼虫活性。通过紫外可见吸收光谱(UV)、傅里叶变换红外光谱(FT-IR)、X射线光谱(XRD)、场发射扫描电子显微镜(FESEM)和高分辨率透射电子显微镜(HRTEM)分析对合成的银纳米颗粒进行了表征。纳米颗粒呈球形、六边形、三角形和多面体形状,发现[植物名称1]的银纳米颗粒(AgNPs)尺寸在72 - 222nm范围内,[植物名称2]的AgNPs尺寸为5 - 25nm。用[植物名称1]和[植物名称2]提取物合成的AgNPs进行的杀幼虫生物测定表明,在10mg/L浓度下对[蚊虫名称1]、[蚊虫名称2]和[蚊虫名称3]的死亡率为100%,其LC₅₀分别为4.02、4.69、5.06mg/L和11.22、12.09、12.74mg/L以及4.63、4.04、3.52mg/L和12.07、10.99、9.61mg/L。这些结果表明,[植物名称1]和[植物名称2]合成的AgNPs有潜力用作控制蚊虫幼虫的理想环保剂。