Mosquito larvicidal activity of silver nanoparticles synthesised using actinobacterium, Streptomyces sp. M25 against Anopheles subpictus, Culex quinquefasciatus and Aedes aegypti

摘要: The present work reports the larvicidal potential of microbially synthesised silver nanoparticles (AgNPs) by using an actinobacterium, Streptomyces sp. M25 isolated from Western Ghats, Tamil Nadu, India. biomass was exposed to 1 mM nitrate (AgNO3) solution. synthesis AgNPs confirmed visual inspection followed instrumental analysis such as UV-vis spectroscopy, fourier transform infrared X-ray diffraction (XRD), energy dispersive scanning electron microscopy, atomic force microscopy and transmission (TEM) with selected area diffraction. Based on TEM XRD analysis, average size determined be 10-35 nm. biosynthesised exhibited significant activity against malarial vector, Anopheles subpictus (LC50 51.34 mg/L χ (2) value 8.228), filarial Culex quinquefasciatus 48.98 mg/L 14.307) dengue Aedes aegypti 60.23 mg/L 4.042), respectively. Similarly, AgNO3 had A. 42.544 mg/L 2.561), C. 44.922 mg/L 1.693) 39.664 mg/L 5.724), current study is a rapid, cost effective, eco-friendly single step approach. newly added source for improved activity.