Multidimensional controlling properties of biofabricated silver-nanoparticles on different mosquito species

2022 ◽  
pp. 1-18
Author(s):  
Arghadip Mondal ◽  
Priyanka Debnath ◽  
Naba kumar Mondal
Keyword(s):  
Silver Nanoparticles ◽  
Mosquito Species

scholarly journals Larvicidal Activity of Silver Nanoparticles Synthesized Using Extracts ofAmbrosia arborescens(Asteraceae) to ControlAedes aegyptiL. (Diptera: Culicidae)

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Bianca Morejón ◽  
Fernanda Pilaquinga ◽  
Flavia Domenech ◽  
Danny Ganchala ◽  
Alexis Debut ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Larvicidal Activity ◽  
Plant Extract ◽  
Mosquito Species ◽  
Cost Effective ◽  
Leaf Extracts ◽  
Suitable Alternative ◽  
Nontarget Effects ◽  
Primary Vector ◽  
Green Synthesized Silver Nanoparticles

The mosquito speciesAedes aegyptiis the primary vector of dengue, chikungunya, and Zika infections worldwide. Since effective vaccines or drugs are not available for the prevention and/or treatment of these pathologies, vector control has been adopted as the main approach to reduce their transmission. To controlAedespopulations, the most commonly used tool is the application of chemical insecticides and, despite their effectiveness, indiscriminate use of these chemicals has led to high operational costs, appearance of resistant populations, and adverse nontarget effects. Plant-derived insecticides may be an eco-friendly, cost-effective, and safe biocontrol alternative. The present study was carried out to evaluate the larvicidal activity of leaf extracts ofAmbrosia arborescensand green-synthesized silver nanoparticles (AgNPs) using aqueous extracts obtained from this plant against third instar larvae ofAe. aegypti. To test this, larvae were exposed for 24 h to the aqueous plant extract at 1500, 3000, 4500, and 6000 ppm and the plant-synthesized AgNPs at 0.2, 0.3, 0.4, and 0.5 ppm. In laboratory assays, AgNPs were more toxic (LC50 = 0.28 ppm; LC90 = 0.43 ppm) than the plant extract (LC50 = 1844.61 ppm; LC90 = 6043.95 ppm). These results suggest thatA. arborescensaqueous extract and green-synthesized silver nanoparticles produced from those extracts have the potential to be developed into suitable alternative tools useful for the control ofAe. aegyptipopulations.

scholarly journals Ovicidal, larvicidal and pupicidal efficacy of silver nanoparticles synthesized by Bacillus marisflavi against the chosen mosquito species

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0260253
Author(s):  
Thelma J. ◽  
Balasubramanian C.
Keyword(s):  
Silver Nanoparticles ◽  
Anopheles Stephensi ◽  
Mosquito Species ◽  
Size Analysis ◽  
Marine Habitat ◽  
Atomic Force ◽  
Afm Analysis ◽  
Rrna Sequencing ◽  
Elemental Nature ◽  
Nano Size

Microbial synthesis of silver nanoparticles is more advantageous and is eco-friendly to combat the various vectors that cause diseases in humans. Hence, in the present study a Bacillus strain is isolated from marine habitat and is evaluated for its ability to synthesize silver nanoparticles (AgNPs) and its efficacy evaluated against the immature stages of selected mosquito species. The effective candidate was confirmed to be Bacillus marisflavi after 16S rRNA sequencing. The synthesis of AgNPs was confirmed by UV-Vis spectrophotometer. Atomic Force Microscopic (AFM) analysis showed spherical nanoparticles. Size analysis using Scanning Electron Microscope (SEM) showed particles of nano size averaging 78.77 nm. The diameter of the particles analyzed by Dynamic Light Scattering (DLS) showed 101.6 nm with a poly-dispersive index of 0.3. Finally the elemental nature of the nanoparticles was identified by Fourier-transform infrared spectroscopy (FTIR). LC50 and LC90 values for the ovicidal, larvicidal and pupicidal efficacy of the AgNPs against the egg, larvae and pupae of Aedes aegypti, Culex quinquefasciatus and Anopheles stephensi respectively were evaluated. The present study revealed that the nanoparticles have an excellent toxic effect against the disease transmitting vector mosquitoes. Hence, the rapid synthesis of AgNPs would be an appropriate eco-friendly tool for biocontrol of vector mosquitoes.

scholarly journals Green synthesis of silver nanoparticles using Cadaba indica lam leaf extract and its larvicidal and pupicidal activity against Anopheles stephensi and Culex quinquefasciatus

2013 ◽  
Vol 45 (2) ◽  
pp. 11 ◽  
Author(s):  
K. Kalimuthu ◽  
C. Panneerselvam ◽  
K. Murugan ◽  
J.- S. Hwang
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
High Mortality ◽  
Culex Quinquefasciatus ◽  
Crude Extract ◽  
Mosquito Species ◽  
Nanoparticle Synthesis ◽  
Lethal Concentration ◽  
X Ray

Green nanoparticle synthesis was achieved using environmentally acceptable plant extracts and eco-friendly reducing and capping agents. In the present study, activity of silver nanoparticles (AgNPs) synthesized using <em>Cadaba indica</em> lam plant against <em>Anopheles stephens</em>i and <em>Culex quinquefasciatus</em> was determined. A range of concentrations of synthesized AgNPs (3.125, 6.25, 12.5, 25, 50 ppm) and crude extract (50, 100, 150, 200, 250 ppm) were tested against <em>A. stephensi </em>and <em>C. quinquefasciatus</em>. The synthesized AgNPs from <em>C. indica</em> lam were much more toxic than crude extract in both mosquito species. The cured extract high mortality values were 50% lethal concentration (LC<sub>50</sub>)=88.22, 90.84 ppm; 90% lethal concentration (LC<sub>90</sub>)=172.94, 178.55 ppm, and the AgNPs high mortality values were LC<sub>50</sub>=3.90, 4.39 ppm; LC<sub>90</sub>=19.04, 17.35 ppm against <em>A. stephensi</em> and <em>C. quinquefasciatus</em>, respectively. The results recorded from ultraviolet-visible spectrophotometer, scanning electron microscopy, energy dispersive X-ray and Fourier transformed infrared support the biosynthesis and characterization of silver nanoparticles. These results suggest that the leaf cured extracts of <em>C. indica</em> lam and green synthesis of silver nanoparticles have the potential to be used as an ideal eco-friendly approach for the control of <em>A. stephensi</em> and <em>C. quinquefasciatus</em>.

Synthesis, performance and growth mechanism of silver nanoparticle coated SERS fiber probe

2019 ◽  
Vol 107 (3) ◽  
pp. 305
Author(s):  
Mengmei Geng ◽  
Yuting Long ◽  
Tongqing Liu ◽  
Zijuan Du ◽  
Hong Li ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Absorption Spectrum ◽  
Reaction Time ◽  
Growth Mechanism ◽  
Fiber Optic ◽  
Fiber Optic Probe ◽  
Visible Absorption ◽  
Fiber Probe ◽  
Surface Enhanced Raman ◽  
Optic Probe

Surface-enhanced Raman Scattering (SERS) fiber probe provides abundant interaction area between light and materials, permits detection within limited space and is especially useful for remote or in situ detection. A silver decorated SERS fiber optic probe was prepared by hydrothermal method. This method manages to accomplish the growth of silver nanoparticles and its adherence on fiber optic tip within one step, simplifying the synthetic procedure. The effects of reaction time on phase composition, surface plasmon resonance property and morphology were investigated by X-ray diffraction analysis (XRD), ultraviolet-visible absorption spectrum (UV-VIS absorption spectrum) and scanning electron microscope (SEM). The results showed that when reaction time is prolonged from 4–8 hours at 180 °C, crystals size and size distribution of silver nanoparticles increase. Furthermore, the morphology, crystal size and distribution density of silver nanoparticles evolve along with reaction time. A growth mechanism based on two factors, equilibrium between nucleation and growth, and the existence of PVP, is hypothesized. The SERS fiber probe can detect rhodamin 6G (R6G) at the concentration of 10−6 M. This SERS fiber probe exhibits promising potential in organic dye and pesticide residue detection.

The Effect of Silver Nanoparticles on Blood Cells in Rats

2012 ◽  
Vol 1 (1) ◽  
Author(s):  
S. Rezaei-Zarchi ◽  
M. Taghavi-Foumani ◽  
S. Razavi Sheshdeh ◽  
M. Negahdary ◽  
G. Rahimi
Keyword(s):  
Silver Nanoparticles ◽  
Blood Cells

Synthesis and Characterization of Silver Nanoplates by a Seed-mediated Method

2019 ◽  
Vol 29 (3) ◽  
Author(s):  
Mai Ngọc Tuan Anh
Keyword(s):  
Hydrogen Peroxide ◽  
Silver Nanoparticles ◽  
Ascorbic Acid ◽  
Silver Nitrate ◽  
Sodium Borohydride ◽  
Trisodium Citrate ◽  
Synthesis And Characterization ◽  
Silver Nanoplates ◽  
Seed Mediated

Silver nanoplates (SNPs) having different size were synthesized by a seed-mediated method. The seeds -silver nanoparticles with 4 – 6 nm diameters were synthesized first by reducing silver nitrate with sodium borohydride in the present of Trisodium Citrate and Hydrogen peroxide. Then these seeds were developed by continue reducing Ag\(^+\) ions with various amount of L-Ascorbic acid to form SNPs. Our analysis showed that the concentratrion of L-Ascorbic acid, a secondary reducing agent, played an important role to form SNPs. In addition, the size and in-plane dipole plasmon resonance wavelenght of silver nanoplates were increased when the concentration of added silver nitrate increased. The characterization of SNPs were studied by UV-Vis, FE-SEM, EDS and TEM methods.

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