The green synthesis, characterization and evaluation of the biological activities of silver nanoparticles synthesized from Iresine herbstii leaf aqueous extracts

2012 ◽  
Vol 98 ◽  
pp. 112-119 ◽  
Author(s):  
C. Dipankar ◽  
S. Murugan
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Biological Activities ◽  
Aqueous Extracts

scholarly journals Green Synthesis and Antibacterial Activity Studies of Silver Nanoparticles from the Aqueous Extracts of Euphorbia hirta

2020 ◽  
Vol 14 (1) ◽  
pp. 301-306
Author(s):  
Bennet Rohan D ◽  
◽  
Raji P ◽  
Divya Kumar M ◽  
Ratna Geethika Gandham ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Green Synthesis ◽  
Aqueous Extracts ◽  
Euphorbia Hirta

Green Synthesis of Silver Nanoparticles Using Jurinea dolomiaea and Biological Activities

2018 ◽  
Vol 18 (12) ◽  
pp. 8386-8391 ◽  
Author(s):  
Muhammad Riaz ◽  
Muhammad Altaf ◽  
Muhammad Qayyum Khan ◽  
Saima Manzoor ◽  
Muhammad Azhar Shekheli ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Color Change ◽  
Biological Activities ◽  
Average Particle Size ◽  
Inhibition Zone ◽  
Root Extract ◽  
Average Particle ◽  
Face Centered Cubic ◽  
Plant Materials

Green syntheses of nanoparticles using plant materials are of tremendous scope. Here we report advantageous green synthesis for silver nanoparticles (AgNPs) using aqueous-root extract of Jurinea dolomiaea and AgNO3. Color change of solution and UV-Vis absorption at 444 nm indicated the formation of AgNPs. XRD confirmed their face centered cubic structure (fcc) with average particle size of 24.58 nm. SEM analysis showed their spherical, cubic and triangular structures. FT-IR indicated the presence of functional groups of reducing and stabilizing phytochemicals. Methanol-root extract of J. dolomiaea revealed high flavonoid (445 mg RE/g) and phenolic contents (92 mg GAE/g). Methanol-extract showed high antioxidant potency (IC50 = 0.494 μg/mL), rationally due to its high phenolic and flavonoid contents. These AgNPs showed the highest and equal antimicrobial activities against Escherichia coli and Pseudomonas aeruginosa (Inhibition zone 11.0 mm) whereas, methanol-roots extract showed equal and intermediate activities (Inhibition zone 8.0 mm) against both pathogens but aqueous extract showed poor activities (Inhibition zone 6.0 mm) against these both pathogens. AgNPs are playing a major role in the field of nanotechnology and nanomedicine due to their antimicrobial and drug delivery efficacy as well as reasonable tolerance in human biology.

Evaluation of Cytotoxic Effect of Silver Nanoparticles (AgNP) Synthesized from Phlebodium aureum (L.) J. Smith Extracts

2020 ◽  
Vol 21 ◽  
Author(s):  
Johnson Marimuthu ◽  
Shibila Thangaiah ◽  
Amutha Santhanam ◽  
Vidyarani George
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Large Scale ◽  
Color Change ◽  
Nanoparticle Synthesis ◽  
Xrd Analysis ◽  
Nano Particles ◽  
Synthesis Methods ◽  
Aqueous Extracts ◽  
Ft Ir

Background:: Chemical synthesis methods are adverse in the medicinal field as they produce toxic in the surface whereas green synthesis provide advancement as well as they are cost effective, environment friendly, can be easily scaled up for large scale synthesis. Silver and silver nanoparticles have an important application in the medical industry such as tropical ointments which are used to prevent infection against burn and open wounds. There is no report on the green synthesis from Phlebodium aureum (L.) J. Smith. Objective:: The present study was aimed to synthesize silver nano-particles using Phlebodium aureum (L.) J. Smith extracts by green approach and to screen their cytotoxicity. Methods:: The synthesized AgNPs of P. aureum were characterized by FT-IR, SEM and XRD. The cytotoxicity of the aqueous extracts and AgNPs of P. aureum were determined. Results:: The silver nanoparticle synthesis was confirmed by color change from yellow to dark brown and absorption peak at 460 nm. FT-IR analysis confirmed the capping by proteins and other metabolites. XRD analysis confirmed the existence of silver nanaoparticles with a peak at 46.253°. The dose dependent cytotoxicity was observed in the aqueous and silver nanoparticles of P.aureum. Conclusion:: The present study gave a simple and cheap route to synthesize the AgNPs using aqueous extracts of P. aureum. The studied extracts of P. aureum can be considered as a promising candidate for a plant-derived anti-tumour compound.

scholarly journals Evaluation of biosynthesis parameters, stability and biological activities of silver nanoparticles synthesized by Cornus Officinalis extract under 365 nm UV radiation

RSC Advances ◽  
2020 ◽  
Vol 10 (45) ◽  
pp. 27173-27182 ◽  
Author(s):  
Yinghui Wang ◽  
Simin Wei ◽  
Kang Wang ◽  
Zhe Wang ◽  
Jinwei Duan ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Uv Radiation ◽  
Biological Activities ◽  
Cornus Officinalis

We present herein a systematically evaluation of the biosynthesis parameters on the green synthesis of AgNPs by utilizing Cornus officinalis extract under 365 nm UV radiation.

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