Green Synthesis of Silver Nanoparticles Using Secondary Metabolites as Reducing and Stabilizing Agent in Presence of Microwave

2020 ◽  
Vol 9 (4) ◽  
Keyword(s):  
Silver Nanoparticles ◽  
Secondary Metabolites ◽  
Green Synthesis ◽  
Stabilizing Agent

scholarly journals Ulvan as novel reducing and stabilizing agent from renewable algal biomass: Application to green synthesis of silver nanoparticles

2019 ◽  
Vol 203 ◽  
pp. 310-321 ◽  
Author(s):  
Alessio Massironi ◽  
Andrea Morelli ◽  
Lucia Grassi ◽  
Dario Puppi ◽  
Simona Braccini ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Algal Biomass ◽  
Stabilizing Agent

Thermosensitive antibacterial Ag nanocomposite hydrogels made by a one-step green synthesis strategy

2016 ◽  
Vol 40 (8) ◽  
pp. 6650-6657 ◽  
Author(s):  
Haoyang Jiang ◽  
Gongzheng Zhang ◽  
Bo Xu ◽  
Xianqi Feng ◽  
Quanming Bai ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Stabilizing Agent ◽  
Nanocomposite Hydrogels ◽  
Synthesis Strategy ◽  
Hydrogel Matrix ◽  
One Step

Clay nanosheets act as a catalyst and stabilizing agent for rapid in situ synthesis of silver nanoparticles in a hydrogel matrix.

Green Synthesis, Characterization and Antimicrobial Activity of Silver Nanoparticles Using Dudoa (Hydnocarpus alcalae C.DC.) Leaf Extract As a Reducing and Stabilizing Agent

2019 ◽  
Vol 4 (2) ◽  
pp. 112-124
Author(s):  
Edward K.B. Bragais ◽  
Lynne M. Labaclado
Keyword(s):  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Leaf Extract ◽  
Cost Effective ◽  
Endemic Plant ◽  
Stabilizing Agent ◽  
One Step ◽  
Ft Ir ◽  
Size And Morphology

Background and Objective: In this study, dudoa (Hydnocarpus alcalae C.DC.) leaf extract was used as a reducing and stabilizing agent in a novel one-step green synthesis of silver nanoparticles. Dudoa is an endemic plant in the province of Legazpi, Philippines and its seed oil was used as an anti-leprotic drug. Method: Therefore, the dudoa leaf extract was used to synthesize silver nanoparticles. Moreover, optimization of various parameters greatly affected the size and morphology of the synthesized AgNPs as indicated by the Ultraviolet-visible (UV-vis) spectrophotometry. The synthesized AgNPs were further characterized using spectral analyses such as XRD, EDX, SEM, FT-IR, TGA and DLS. The antimicrobial activity of synthesized AgNPs was also demonstrated. Results and Discussions: The synthesized AgNPs exhibited a diffraction pattern and a particle size ranging from 22-48 nm. The AgNPs also showed complete inhibitory and mild reactivity against representative pathogenic gram-positive (S.aureus) and gram-negative (E.coli) bacteria. Conclusion: Silver nanoparticles were successfully synthesized using H. alcalae leaf extract. Furthermore, this green synthesis approach appeared to be cost-effective, non-toxic, and eco-friendly which is a best alternative to the conventional chemical methods.

Effect of molecular weight of PEG or PVA as reducing-stabilizing agent in the green synthesis of silver-nanoparticles

2016 ◽  
Vol 83 ◽  
pp. 265-277 ◽  
Author(s):  
César Díaz-Cruz ◽  
Gabriel Alonso Nuñez ◽  
Heriberto Espinoza-Gómez ◽  
Lucía Z. Flores-López
Keyword(s):  
Molecular Weight ◽  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Stabilizing Agent

scholarly journals Green synthesis of silver nanoparticles mediated by traditionally used medicinal plants in Sudan

2019 ◽  
Vol 10 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Reem Hassan Ahmed ◽  
Damra Elhaj Mustafa
Keyword(s):  
Silver Nanoparticles ◽  
Medicinal Plants ◽  
Secondary Metabolites ◽  
Green Synthesis ◽  
Biological Activities ◽  
Geographical Location ◽  
Synthesis Methods ◽  
Aromatic Plants ◽  
Medicinal And Aromatic Plants ◽  
Redox Capacity

AbstractSudan has a tremendous wealth flora due to its unique geographical location and diverse climate. Vast records of plants and plants’ secondary metabolites are reported to possess redox capacity and can be exploited for the biosynthesis of nanoparticles. Plant-mediated synthesis of silver nanoparticles is preferred due to their availability and their various metabolites. The present review explores the potentiality and diversity of biological activities of silver nanoparticles that originated from the combination of silver and phyto-constituents of mostly traditionally used Sudanese medicinal and aromatic plants. The green synthesis methods of silver nanoparticles mediated by more than 45 traditionally used medicinal plants are critically reviewed. In addition, parameters that affect the synthesis of plant-mediated silver nanoparticles, their characterization techniques and various biological activities are summarized and discussed. Thus, the study of green synthesis of silver nanoparticles and its applications can be extended to involve vast plant diversity of Sudan.

Green synthesis of silver nanoparticles with high antimicrobial activity and low cytotoxicity using catechol-conjugated chitosan

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 64357-64363 ◽  
Author(s):  
Xiaofei Huang ◽  
Yichuan Pang ◽  
Yalan Liu ◽  
Yi Zhou ◽  
Zhengke Wang ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Green Synthesis ◽  
High Antimicrobial Activity ◽  
Stabilizing Agent ◽  
Low Cytotoxicity

Catechol-conjugated chitosan was synthesized to act as a reducing and stabilizing agent in the preparation of silver nanoparticles. The resulting silver nanoparticles exhibit strong antibacterial activity and low cytotoxicity.

Synergistic Antibacterial Efficacy of Biogenic Synthesized Silver Nanoparticles using Ajuga bractosa with Standard Antibiotics: A Study Against Bacterial Pathogens

2020 ◽  
Vol 21 (3) ◽  
pp. 206-218 ◽  
Author(s):  
Sadia Nazer ◽  
Saiqa Andleeb ◽  
Shaukat Ali ◽  
Nazia Gulzar ◽  
Tariq Iqbal ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Bacterial Pathogens ◽  
Potential Effect ◽  
Innovative Technology ◽  
Multi Drug Resistance ◽  
Phytochemical Screening ◽  
Cell Proliferation Inhibition ◽  
Agar Well Diffusion Assay ◽  
Scanning Electron

Background: Multi-drug resistance in bacterial pathogens is a major concern of today. Green synthesis technology is being used to cure infectious diseases. Objectives: The aim of the current research was to analyze the antibacterial, antioxidant, and phytochemical screening of green synthesized silver nanoparticles using Ajuga bracteosa. Methods: Extract of A. bracteosa was prepared by maceration technique. Silver nanoparticles were synthesized using A. bracteosa extract and were confirmed by UV-Vis spectrophotometer, Scanning Electron Microscope (SEM) and Fourier Transform Infrared Spectroscopy (FTIR). The antibacterial, anti-biofilm, cell proliferation inhibition, TLC-Bioautography, TLC-Spot screening, antioxidant, and phytochemical screening were also investigated. Results: UV-Vis spectrum and Scanning electron microscopy confirmed the synthesis of green nanoparticles at 400 nm with tube-like structures. FTIR spectrum showed that functional groups of nanoparticles have a role in capping and stability of AgNP. Agar well diffusion assay represented the maximum antibacterial effect of ABAgNPs against Escherichia coli, Klebsiella pneumoniae, Streptococcus pyogenes, Staphylococcus aureus, and Pseudomonas aeruginosa at 0.10 g/mL concentration compared to ABaqu. Two types of interactions among nanoparticles, aqueous extract, and antibiotics (Synergistic and additive) were recorded against tested pathogens. Crystal violet, MTT, TLC-bio-autography, and spot screening supported the findings of the antibacterial assay. Highest antioxidant potential effect in ABaqu was 14.62% (DPPH) and 13.64% (ABTS) while 4.85% (DPPH) and 4.86% (ABTS) was recorded in ABAgNPs. Presence of phytochemical constituents showed pharmacological importance. Conclusion: It was concluded that green synthesis is an innovative technology in which natural products are conjugated with metallic particles and are used against infectious pathogens. The current research showed the significant use of green nanoparticles against etiological agents.

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