Plant-extract-assisted green synthesis and its larvicidal activities of silver nanoparticles using leaf extract of Citrus medica, Tagetes lemmonii, and Tarenna asiatica

Chandhirasekar, K.; Thendralmanikandan, A.; Pazhanivel, T.; Nguyen, Ba-Son; Tronganh, Nguyen; Sivashanmugan, Kundan; Nareshkumar, Arjunan; Nguyen, Van‐Huy

doi:10.1016/j.matlet.2020.129265

Cited by 37 publications

(20 citation statements)

References 24 publications

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“…In addition, the peak shift from 1380 to 1013 cm −1 for H 4 L-AgNPs and from 1413 to 1017 cm −1 for TBAPy-AgNPs is largely ascribed to the contribution of the -C-H and O-H bending vibration of aliphatic and aromatic C-H plane distortion vibrations of methyl, methylene, and methoxy groups during reduction. Such characteristic modes demonstrate the extended vibrational bands in charge of compounds such as flavonoids and terpenoids [44][45][46].…”

Section: Ft-ir Analysismentioning

confidence: 94%

Green synthesis of AgNP–ligand complexes and their toxicological effects on Nilaparvata lugens

et al. 2021

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Background Despite developments in nanotechnology for use in the pharmaceutical field, there is still a need for implementation of this technology in agrochemistry. In this study, silver nanoparticles (AgNPs) were successfully prepared by a facile and an eco-friendly route using two different ligands, 2ʹ-amino-1,1ʹ:4ʹ,1″-terphenyl-3,3″,5,5″-tetracarboxylic acid (H4L) and 1,3,6,8-tetrakis (p-benzoic acid)-pyrene (TBAPy), as reducing agents. The physiochemical properties of the as-obtained AgNPs were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The toxicity of H4L–AgNP and TBAPy–AgNP against the brown planthopper (BPH, Nilaparvata lugens) was also measured. Results SEM and TEM analyses demonstrated the formation of quasi-spherical AgNP structures in the presence of H4L and TBAPy. Insecticidal assays showed that TBAPy is less effective against N. lugens, with a median lethal concentration (LC50) of 810 mg/L, while the toxicity of H4L increased and their LC50 reached 786 mg/L 168 h posttreatment at a high concentration of 2000 mg/L. H4L–AgNPs were also highly toxic at a low concentration of 20 mg/L, with LC50 = ~ 3.9 mg/L 168 h posttreatment, while TBAPy–AgNPs exhibited less toxicity at the same concentration, with LC50 = ~ 4.6 mg/L. Conclusions These results suggest that the synthesized AgNPs using the two ligands may be a safe and cheaper method compared with chemical insecticides for protection of rice plants from pests and has potential as an effective insecticide in the N. lugens pest management program.

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Section: Ft-ir Analysismentioning

confidence: 94%

Green synthesis of AgNP–ligand complexes and their toxicological effects on Nilaparvata lugens

et al. 2021

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“…Biological methods such as green synthesis are described as non-toxic, simple, rapid, and dependable among several reported methods. Green methods can generate AgNP’s well-defined size and morphology under optimized conditions and reproducibility compared to the physical and chemical methods [ 2 , 5 , 6 ]. The intrinsic ability of plants and their secondary metabolites and sugars, to act as reducing and capping agents and contribute to the amalgamation of metal ions into nanoparticles is more reputed than that of microorganisms (bacteria and fungi).…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial Activities against Opportunistic Pathogenic Bacteria Using Green Synthesized Silver Nanoparticles in Plant and Lichen Enzyme-Assisted Extracts

Balčiūnaitienė

Štreimikytė

Puzerytė

et al. 2022

Plants

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Enzyme-assisted extraction is a valuable tool for mild and environmentally-friendly extraction conditions to release bioactive compounds and sugars, essential for silver nanoparticle (AgNP) green synthesis as capping and reducing agents. In this research, plant and fungal kingdoms were selected to obtain the enzyme-assisted extracts, using green synthesized AgNPs. For the synthesis, pseudo-cereal Fagopyrum esculentum (F. esculentum) and lichen Certaria islandica (C. islandica) extracts were used as environmentally-friendly agents under heating in an aqueous solution. Raw and enzyme-assisted extracts of AgNPs were characterized by physicochemical, phytochemical, and morphological characteristics through scanning and transmission electron microscopy (SEM and TEM), as well as Fourier transform infrared spectroscopy (FTIR). The synthesized nanoparticles were spherical in shape and well dispersed, with average sizes ranging from 10 to 50 nm. This study determined the total phenolic content (TPC) and in vitro antioxidant activity in both materials by applying standard methods. The results showed that TPC, ABTS•+, FRAP, and DPPH• radical scavenging activities varied greatly in samples. The AgNPs derived from enzymatic hydrolyzed aqueous extracts C. islandica and F. esculentum exhibited higher antibacterial activity against the tested bacterial pathogens than their respective crude extracts. Results indicate that the extracts’ biomolecules covering the AgNPs may enhance the biological activity of silver nanoparticles and enzyme assistance as a sustainable additive to technological processes to achieve higher yields and necessary media components.

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“…Green synthesized nanoparticles (NPs) are based on a redox reaction in which metal ions are reduced to stable NPs by organisms or their extract [ 9 ]. Various extracts of microorganisms (bacteria, fungi, algae) and higher organisms, especially plants, have been used as reducing agents for the synthesis of NPs [ 10 , 11 , 12 , 13 , 14 , 15 ]. The biological-based green synthesis NPs have many advantages, including being simple, rapid, non-toxic, reproducible, easy to scale up, and cost-effective, compared to chemical and physical syntheses.…”

Section: Introductionmentioning

confidence: 99%

Proteomic Response of Aedes aegypti Larvae to Silver/Silver Chloride Nanoparticles Synthesized Using Bacillus thuringiensis subsp. israelensis Metabolites

Chimkhan

Thammasittirong

Roytrakul

et al. 2022

Insects

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Silver/silver chloride nanoparticles (Ag/AgCl NPs) are an alternative approach to control the larvae of Aedes aegypti, a vector of mosquito-borne diseases. However, the molecular mechanisms of Ag/AgCl NPs to A. aegypti have not been reported. In this work, Ag/AgCl NPs were synthesized using supernatant, mixed toxins from Bacillus thuringiensis subsp. israelensis (Bti), and heterologously expressed Cry4Aa and Cry4Ba toxins. The images from scanning electron microscopy revealed that the Ag/AgCl NPs were spherical in shape with a size range of 25–100 nm. The larvicidal activity against A. aegypti larvae revealed that the Ag/AgCl NPs synthesized using the supernatant of Bti exhibited higher toxicity (LC50 = 0.133 μg/mL) than the Ag/AgCl NPs synthesized using insecticidal proteins (LC50 = 0.148–0.217 μg/mL). The proteomic response to Ag/AgCl NPs synthesized using the supernatant of Bti in A. aegypti larvae was compared to the ddH2O-treated control. Two-dimensional gel electrophoresis analysis revealed 110 differentially expressed proteins, of which 15 were selected for identification using mass spectrometry. Six upregulated proteins (myosin I heavy chain, heat shock protein 70, the F0F1-type ATP synthase beta subunit, methyltransferase, protein kinase, and condensin complex subunit 3) that responded to Ag/AgCl NP treatment in A. aegypti were reported for NP treatments in different organisms. These results suggested that possible mechanisms of action of Ag/AgCl NPs on A. aegypti larvae are: mitochondrial dysfunction, DNA and protein damage, inhibition of cell proliferation, and cell apoptosis. The findings from this work provide greater insight into the action of green synthesized Ag/AgCl NPs on the control of A. aegypti larvae.

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Plant-extract-assisted green synthesis and its larvicidal activities of silver nanoparticles using leaf extract of Citrus medica, Tagetes lemmonii, and Tarenna asiatica

Cited by 37 publications

References 24 publications

Green synthesis of AgNP–ligand complexes and their toxicological effects on Nilaparvata lugens

Green synthesis of AgNP–ligand complexes and their toxicological effects on Nilaparvata lugens

Antimicrobial Activities against Opportunistic Pathogenic Bacteria Using Green Synthesized Silver Nanoparticles in Plant and Lichen Enzyme-Assisted Extracts

Proteomic Response of Aedes aegypti Larvae to Silver/Silver Chloride Nanoparticles Synthesized Using Bacillus thuringiensis subsp. israelensis Metabolites

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