Uncaria gambir Roxb. mediated green synthesis of silver nanoparticles using diethanolamine as capping agent

Development of an ecofriendly, reliable, and rapid process for synthesis of nanoparticles using biological system is an important bulge in nanotechnology. Antioxidant potential and medicinal value of Adiantum philippense L. fascinated us to utilize it for biosynthesis of gold and silver nanoparticles (AuNPs and AgNPs). The current paper reports utility of aqueous extract of A. philippense L. fronds for the green synthesis of AuNPs and AgNPs. Effect of various parameters on synthesis of nanoparticles was monitored by UV-Vis spectrometry. Optimum conditions for AuNPs synthesis were 1 : 1 proportion of original extract at pH 11 and 5 mM tetrachloroauric acid, whereas optimum conditions for AgNPs synthesis were 1 : 1 proportion of original extract at pH 12 and 9 mM silver nitrate. Characterization of nanoparticles was done by TEM, SAED, XRD, EDS, FTIR, and DLS analyses. The results revealed that AuNPs and AgNPs were anisotropic. Monocrystalline AuNPs and polycrystalline AgNPs measured 10 to 18 nm in size. EDS and XRD analyses confirmed the presence of elemental gold and silver. FTIR analysis revealed a possible binding of extract to AuNPs through –NH2 group and to AgNPs through C=C group. These nanoparticles stabilized by a biological capping agent could further be utilized for biomedical applications.

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Green Synthesis of Silver Nanoparticles Using Chitosan for 4-Nitrophenol Reduction

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.479-481.332 ◽

2012 ◽

Vol 479-481 ◽

pp. 332-335 ◽

Cited By ~ 1

Author(s):

Xin Yang ◽

Di Geng ◽

Lian Jin Weng ◽

Yuan Yuan Han ◽

Wen Jin Yang

Keyword(s):

Silver Nanoparticles ◽

Thermal Treatment ◽

Green Synthesis ◽

Sodium Borohydride ◽

Reducing Agent ◽

Capping Agent ◽

Nitrophenol Reduction

In this study, we report a straightforward route for the synthesis of silver nanoparticles by chitosan under moderate thermal treatment. Chitosan acted as both a reducing agent and a capping agent. The synthesized nanocomposites could function as effective catalysts for the reduction of 4-nitrophenol in the presence of sodium borohydride.

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Synergic effect of aqueous extracts of Ocimum sanctum and Trigonella foenum-graecum L on the in situ green synthesis of silver nanoparticles and as a preventative agent against antibiotic-resistant food spoiling organisms

RSC Advances ◽

10.1039/d1ra08098a ◽

2022 ◽

Vol 12 (3) ◽

pp. 1425-1432

Author(s):

Mohammad Changez ◽

Mohammad Faiyaz Anwar ◽

Said Al-Ghenaime ◽

Sumeet Kapoor ◽

Rayya Al Balushi ◽

...

Keyword(s):

Silver Nanoparticles ◽

Green Synthesis ◽

Ocimum Sanctum ◽

Aqueous Extracts ◽

Capping Agent ◽

Synergic Effect ◽

Antibiotic Resistant ◽

Trigonella Foenum Graecum ◽

Trigonella Foenum Graecum L

Combining Ocimum sanctum and Trigonella foenum-graecum L leaf water extracts synergistically act as a reducing and capping agent for the synthesis of narrow polydisperse silver nanoparticles with controlled sizes depending on the precursor (AgNO3) concentration.

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Withdrawn: Aqueous Extract of Eucalyptus Camaldulensis Leaves as a Reducing and Capping Agent in Green Synthesis of Silver Nanoparticles

Current Nanomaterials ◽

10.2174/2405461504666190625121807 ◽

2019 ◽

Vol 04 ◽

Cited By ~ 2

Author(s):

I. Alghoraibia ◽

Ch. Soukkarieh ◽

R. Zein ◽

A. Alahmad ◽

J-G. Walter ◽

...

Keyword(s):

Silver Nanoparticles ◽

Green Synthesis ◽

Aqueous Extract ◽

Eucalyptus Camaldulensis ◽

Capping Agent ◽

Editorial Policies

The article entitled, “Aqueous Extract of Eucalyptus Camaldulensis Leaves as a Reducing and Capping Agent in Green Synthesis of Silver Nanoparticles” submitted in Current Nanomaterials (CNM) by Dr. Ibrahim Alghoraibi has been withdrawn from the journal in accordance with BSP Editorial Policies.

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Green synthesis method of silver nanoparticles using starch as capping agent applied the methodology of surface response

Starch - Stärke ◽

10.1002/star.201200255 ◽

2013 ◽

Vol 65 (9-10) ◽

pp. 814-821 ◽

Cited By ~ 43

Author(s):

Lesli Ortega-Arroyo ◽

Eduardo San Martin-Martinez ◽

Miguel A. Aguilar-Mendez ◽

Alfredo Cruz-Orea ◽

Isaias Hernandez-Pérez ◽

...

Keyword(s):

Silver Nanoparticles ◽

Green Synthesis ◽

Synthesis Method ◽

Capping Agent ◽

Surface Response

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Green synthesis and antibacterial effects of aqueous colloidal solutions of silver nanoparticles using camomile terpenoids as a combined reducing and capping agent

Bioprocess and Biosystems Engineering ◽

10.1007/s00449-016-1599-4 ◽

2016 ◽

Vol 39 (8) ◽

pp. 1213-1223 ◽

Cited By ~ 32

Author(s):

Magdalena Parlinska-Wojtan ◽

Małgorzata Kus-Liskiewicz ◽

Joanna Depciuch ◽

Omowunmi Sadik

Keyword(s):

Silver Nanoparticles ◽

Green Synthesis ◽

Capping Agent ◽

Colloidal Solutions ◽

Antibacterial Effects

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

Current Pharmaceutical Biotechnology ◽

10.2174/1389201020666191001123219 ◽

2020 ◽

Vol 21 (3) ◽

pp. 206-218 ◽

Cited By ~ 2

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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