Insecticidal Efficacy of Microbial-Mediated Synthesized Copper Nano-Pesticide against Insect Pests and Non-Target Organisms

• Published in: International journal of environmental research and public health Vol. 18; no. 19; p. 10536
• Main Authors: Vivekanandhan, Perumal, Swathy, Kannan, Thomas, Adelina, Kweka, Eliningaya J, Rahman, Afroja, Pittarate, Sarayut, Krutmuang, Patcharin
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 08-10-2021; MDPI
• Subjects: Aedes; Animals; Artemia; Atomic force microscopes; Atomic force microscopy; Biomass; Chemicals; Copper; Copper - toxicity; Culex; Energy dispersive X ray analysis; Enzymes; Ethanol; Fourier analysis; Fourier transforms; Fungi; Grain storage; Humans; Infrared analysis; Infrared spectrophotometers; Infrared spectroscopy; Insecticides - toxicity; Larva; Larvae; Malaria; Metabolites; Metal Nanoparticles - toxicity; Metarhizium; Microorganisms; Morphology; Mosquitoes; Nanoparticles; Nontarget organisms; Organisms; Pesticides; Pests; Plant Extracts; Plant Leaves; Public health; Scanning electron microscopy; Silver; Tenebrio molitor; Toxicity; Tropical diseases; X ray analysis; X-ray diffraction; Zika virus; Canada; India; Artemia salina; Mosquitoes; CuNPs; Metarhizium robertsii; Artemia nauplii; Eudrilus andrei; Tenebrio molitor; Eudrilus eugeniae
• ISSN: 1660-4601; 1661-7827; 1660-4601
• DOI: 10.3390/ijerph181910536

Currently, medical and stored grain pests are major concerns of public health and economies worldwide. The synthetic pesticides cause several side effects to human and non-target organisms. Copper nanoparticles (CuNPs) were synthesized from an aqueous extract of
and screened for insecticidal activity against
,
,
,
and other non-target organisms such as
,
and
. The synthesized copper nano-particles were characterized using, UV-vis spectrophotometer, Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), Energy Dispersive X-Ray analysis (EDaX), High Resolution Scanning Electron Microscope (HR-SEM) and Atomic Force Microscope (AFM) analysis. Insects were exposed to 25 μg/mL concentration produced significant mortality against larvae of
.
,
.
,
.
and
.
. The lower toxicity was observed on non-target organisms. Results showed that,
.
mediated synthesized CuNPs is highly toxic to targeted pests while they had lower toxicity were observed on non-target organisms.