Green Synthesis of ZnO Nanoparticles Using Myrtus communis L. Extract and their Insecticidal Activity against Myzus persicae (Sulzer)

Abstract

Using nanotechnology to develop nanobiopesticides is an emerging strategy for controlling insect pests because of their high synthesis efficiency and environmental safety. In this study, Myrtus communis L. plant extracts were used in the biosynthesis of zinc oxide nanoparticles (ZnO NPs) and evaluated for their insecticidal activity against the green peach aphid, Myzus persicae. ZnO NPs were characterized using several methods, such as an ultraviolet-visible spectrophotometer, where the peak was recorded at 378 nm. Furthermore, the Fourier transform infrared analysis spectrum showed many different types of functional groups playing a role in the biosynthesis of ZnO NPs. Field emission scanning electron microscopy analysis showed that synthesized ZnO NPs were semi-spherical, ranging from 40 to 60 nm. Prepared concentrations of ZnO NPs were tested against nymphs and adults of M. persicae, and 77.37 and 53.65% of mortality was recorded at 100 ppm concentration after 3-day post-treatment, respectively, compared to controls (plant extract only used) where 33.31 and 23.54% of mortality was observed. It shows that the M. communis-based ZnO NPs were approximately 2.5 times more effective toxins suggesting the potential of nanoproducts as nanobiopesticides.. KEYWORDS :Myrtus communis, Nanotechnology, Zinc oxide, Insecticide, Myzus persicae