scholarly journals Biosynthesis of Silver Nanoparticles Using Terminalia Bellirica Fruit Extract and Their Characterization

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Mahesh Chandra Purohit ◽  
Rashmi Rawat ◽  
Anuj Kandwal ◽  
Aditya Ram Semwal ◽  
Rakesh Kumar Joshi
Keyword(s):  
Silver Nanoparticles ◽  
Ag Nanoparticles ◽  
Face Centered Cubic ◽  
Tem Analysis ◽  
Fruit Extracts ◽  
Agno3 Solution ◽  
Light Yellow ◽  
Terminalia Bellirica ◽  
Face Centered ◽  
Average Size

Green synthesis is an appropriate method for the synthesis of Ag nanoparticles using Terminalia Bellirica fruit extracts. The change in color from light yellow to dark brown was observed by adding AgNO3 solution into fruit extracts. The Ag nanoparticles were characterized by UV-Vis (Ultraviolet-visible), XRD, TEM and FTIR. The reduction of Ag + into Ag 0 was observed by UV-Vis spectrophotometer. The silver nanoparticles were found to be crystalline in nature when observed in the X-Ray Diffraction analysis. The geometry of these silver nanoparticles is face centered cubic geometry. When observed in the Transmission Electron Microscopy (TEM) analysis, these synthesized nanoparticles were found spherical in shape where their average size was less than 26 nanometers. FTIR peaks confirms the presence of phytochemicals which are responsible for reducing, capping and stabilizing the nanoparticles.

scholarly journals Functional Attributes of Myco-Synthesized Silver Nanoparticles from Endophytic Fungi: A New Implication in Biomedical Applications

Biology ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 473
Author(s):  
Prabu Kumar Seetharaman ◽  
Rajkuberan Chandrasekaran ◽  
Rajiv Periakaruppan ◽  
Sathishkumar Gnanasekar ◽  
Sivaramakrishnan Sivaperumal ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Culture Filtrate ◽  
Morphological Changes ◽  
Xrd Analysis ◽  
Penicillium Oxalicum ◽  
Breast Cancer Cell Lines ◽  
Face Centered Cubic ◽  
Tem Analysis ◽  
X Ray ◽  
Average Size

To develop a benign nanomaterial from biogenic sources, we have attempted to formulate and fabricate silver nanoparticles synthesized from the culture filtrate of an endophytic fungus Penicillium oxalicum strain LA-1 (PoAgNPs). The synthesized PoAgNPs were exclusively characterized through UV–vis absorption spectroscopy, Fourier Transform Infra-Red spectroscopy (FT-IR), X-ray powder diffraction (XRD), and Transmission Electron Microscopy (TEM) with energy dispersive X-ray spectroscopy (EDX). The synthesized nanoparticles showed strong absorbance around 430 nm with surface plasmon resonance (SPR) and exhibited a face-centered cubic crystalline nature in XRD analysis. Proteins presented in the culture filtrate acted as reducing, capping, and stabilization agents to form PoAgNPs. TEM analysis revealed the generation of polydispersed spherical PoAgNPs with an average size of 52.26 nm. The PoAgNPs showed excellent antibacterial activity against bacterial pathogens. The PoAgNPs induced a dose-dependent cytotoxic activity against human adenocarcinoma breast cancer cell lines (MDA-MB-231), and apoptotic morphological changes were observed by dual staining. Additionally, PoAgNPs demonstrated better larvicidal activity against the larvae of Culex quinquefasciatus. Moreover, the hemolytic test indicated that the as-synthesized PoAgNPs are a safe and biocompatible nanomaterial with versatile bio-applications.

scholarly journals Green Synthesis and Catalytic Activity of Silver Nanoparticles Based on Piper chaba Stem Extracts

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1777 ◽  
Author(s):  
Md. Mahiuddin ◽  
Prianka Saha ◽  
Bungo Ochiai
Keyword(s):  
Electron Microscopy ◽  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Ftir Spectroscopy ◽  
Visual Observation ◽  
Face Centered Cubic ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Face Centered ◽  
Average Size

A green synthesis of silver nanoparticles (AgNPs) was conducted using the stem extract of Piper chaba, which is a plant abundantly growing in South and Southeast Asia. The synthesis was carried out at different reaction conditions, i.e., reaction temperature, concentrations of the extract and silver nitrate, reaction time, and pH. The synthesized AgNPs were characterized by visual observation, ultraviolet–visible (UV-vis) spectroscopy, dynamic light scattering (DLS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), x-ray diffraction (XRD), energy dispersive x-ray (EDX), and Fourier transform infrared (FTIR) spectroscopy. The characterization results revealed that AgNPs were uniformly dispersed and exhibited a moderate size distribution. They were mostly spherical crystals with face-centered cubic structures and an average size of 19 nm. The FTIR spectroscopy and DLS analysis indicated that the phytochemicals capping the surface of AgNPs stabilize the dispersion through anionic repulsion. The synthesized AgNPs effectively catalyzed the reduction of 4-nitrophenol (4-NP) and degradation of methylene blue (MB) in the presence of sodium borohydride.

scholarly journals Effect of feed supplementation with biosynthesized silver nanoparticles using leaf extract of Morus indica L. V1 on Bombyx mori L. (Lepidoptera: Bombycidae)

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Sudip Some ◽  
Onur Bulut ◽  
Kinkar Biswas ◽  
Anoop Kumar ◽  
Anupam Roy ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Bombyx Mori ◽  
Leaf Extract ◽  
Silver Ions ◽  
Average Diameter ◽  
Face Centered Cubic ◽  
Tem Analysis ◽  
Beneficial Effects ◽  
Selected Area Electron Diffraction ◽  
Face Centered

Abstract Herein, we report the synthesis of silver nanoparticles (AgNPs) by a green route using the aqueous leaf extract of Morus indica L. V1. The synthesized AgNPs exhibited maximum UV-Vis absorbance at 460 nm due to surface plasmon resonance. The average diameter (~54 nm) of AgNPs was measured from HR-TEM analysis. EDX spectra also supported the formation of AgNPs, and negative zeta potential value (−14 mV) suggested its stability. Moreover, a shift in the carbonyl stretching (from 1639 cm−1 to 1630 cm−1) was noted in the FT-IR spectra of leaf extract after AgNPs synthesis which confirm the role of natural products present in leaves for the conversion of silver ions to AgNPs. The four bright circular rings (111), (200), (220) and (311) observed in the selected area electron diffraction pattern are the characteristic reflections of face centered cubic crystalline silver. LC-MS/MS study revealed the presence of phytochemicals in the leaf extract which is responsible for the reduction of silver ions. MTT assay was performed to investigate the cytotoxicity of AgNPs against two human cell lines, namely HepG2 and WRL-68. The antibacterial study revealed that MIC value of the synthesized AgNPs was 80 µg/ml against Escherichia coli K12 and Staphylococcus aureus (MTCC 96). Finally, the synthesized AgNPs at 10 µg/ml dosages showed beneficial effects on the survivability, body weights of the Bombyx mori L. larvae, pupae, cocoons and shells weights via enhancing the feed efficacy.

Development of Antibacterial Xanthan/Chitosan Biguanidine Hydrochlo ride Polyelectrolyte Complexes Decorated with Eco-friendly Prepared Silver Nanoparticles

2020 ◽  
Vol 10 ◽  
Author(s):  
Hend Ezzat Salama ◽  
Mohamed Samir Abdel Aziz
Keyword(s):  
Silver Nanoparticles ◽  
Biomedical Applications ◽  
Decomposition Temperature ◽  
Homogeneous Distribution ◽  
Face Centered Cubic ◽  
Polyelectrolyte Complexes ◽  
X Ray ◽  
Integral Procedure ◽  
Face Centered ◽  
Average Size

Background:: Novel eco-friendly silver nanocomposites of xanthan/chitosan biguanidine hydrochloride polyelectrolyte complexes were successfully prepared. Methods:: Silver nanoparticles (AgNPs) were formed through an insitu eco-friendly reduction by the non-toxic polysaccharides without the usage of toxic reagents. FTIR confirmed the successful preparation of the nanocomposites while XRD confirmed the presence of AgNPs with face-centered cubic structures. TEM confirmed the homogeneous distribution of AgNPs with an average size of 14.1 nm. SEM was used to study the surface morphology of the nanocomposites while the energy-dispersive X-ray spectroscopy (EDX) confirmed the presence of AgNPs. Results:: Thermogravimetric analysis showed that the thermal stability was improved in the presence of AgNPs as detected from the calculated integral procedure decomposition temperature. Antibacterial activity against different bacteria species was significantly improved upon increasing the content of AgNPs. Conclusion:: Due to their interesting properties, the prepared polyelectrolyte complexes and their AgNPs nanocomposites could be employed potentially in many biomedical applications like drug delivery.

Light-Mediated Green Synthesis of DNA-Capped Silver Nanoparticles and Their Antibacterial Activity

2020 ◽  
Vol 20 (3) ◽  
pp. 1678-1684
Author(s):  
Jiraporn Chumpol ◽  
Sineenat Siri
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Light Exposure ◽  
Low Cost ◽  
Reaction Times ◽  
Antibacterial Activities ◽  
Face Centered Cubic ◽  
Stabilizing Agents ◽  
Face Centered ◽  
Average Size

Green synthesis offers an eco-friendly and low-cost approach for the synthesis of silver nanoparticles (AgNPs). Many studies have reported on the use of biomolecules, especially plant extracts, as reducing and/or stabilizing agents in place of toxic chemicals. This study reports on the use of bacterial genomic DNA as an alternative stabilizing agent for the green synthesis of AgNPs under light activation. With both increased DNA quantities and reaction times under light exposure, more stabilized AgNPs formed as indicated by the surface plasmon resonance intensities. The synthesized AgNPs were spherical with an average size of 61.36±10.15 nm as calculated using the dynamic light scattering (DLS) technique. The X-ray diffraction, selected area electron diffraction, and high resolution transmission electron microscope (TEM) analyses confirmed the formation of face-centered cubic (fcc) structured AgNPs. The produced AgNPs exhibited antibacterial activities against both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus, suggesting its potential application as an antibacterial agent.

Trillium govanianum Wall. Ex. Royle rhizomes extract-medicated silver nanoparticles and their antimicrobial activity

2020 ◽  
Vol 9 (1) ◽  
pp. 503-514 ◽  
Author(s):  
Khaleeq Uz-Zaman ◽  
Jehan Bakht ◽  
Bates Kudaibergenova Malikovna ◽  
Eman R. Elsharkawy ◽  
Anees Ahmed Khalil ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Cost Effective ◽  
Face Centered Cubic ◽  
Synthesis Of Nanoparticles ◽  
E Coli ◽  
Area Of Interest ◽  
Cost Effective Technique ◽  
Face Centered ◽  
Trillium Govanianum ◽  
Average Size

AbstractSynthesis of nanoparticles is a fast-growing area of interest in the current development in science and technology. Nanoparticles are also used in biomedical applications. Green synthesis of nanoparticles is an environmental friendly and cost-effective technique. Trillium govanianum Wall. Ex. Royle crude extract was used for the eco-friendly genesis of silver nanoparticles (AgNPs). Aromatic amines were the functional groups involved in the bio-fabrication and synthesis of the AgNPs. The production of AgNPs was established by the appearance of brown color. The manufactured AgNPs were characterized by UV-Vis spectrophotometer, X-ray diffractometer, and FTIR spectrophotometer. AgNPs were face-centered cubic in nature with an average size of 9.99 nm. The produced AgNPs (18 µL disc−1) showed substantial antibacterial (53.74, 52.75, 51.61, 43.00, 36.84, and 36.84%) and antifungal (54.05, 42.11, 41.10, 40.85, 30.55, and 29.73%) potential against the tested bacterial (X. campestris, P. aeruginosa, S. aureus, E. coli, B. subtilis, and K. pneumoniae) and fungal (A. alternaria, Paecilomyces, C. albicans, Curvularia, A. niger, and Rhizopus) strains, respectively.

scholarly journals Атомарная люминесценция Ag при однопузырьковом сонолизе водной суспензии наночастиц серебра

2021 ◽  
Vol 47 (22) ◽  
pp. 17
Author(s):  
Б.М. Гареев ◽  
Г.Л. Шарипов
Keyword(s):  
Silver Nanoparticles ◽  
Ag Nanoparticles ◽  
Colloidal Suspension ◽  
Experimental Spectrum ◽  
Nonequilibrium Plasma ◽  
Collisional Excitation ◽  
Stable Suspension ◽  
Agno3 Solution ◽  
Average Size ◽  
First Time

For the first time, luminescence of Ag atoms was recorded during moving single-bubble sonolysis of silver nanoparticles aqueous colloidal suspension. This glow is caused by the entry of nanoparticles into a bubble deformable during motion and their decomposition to atoms with collisional excitation in the nonequilibrium plasma of the bubble. Nanoparticles were obtained by multibubble sonolysis of an AgNO3 solution with the addition of honey. This method was used to synthesize a stable suspension of Ag nanoparticles with an average size of ~ 10 nm. By comparing the experimental spectrum of this suspension and simulated spectra of Ag, the electron temperature in the bubble plasma was found to be ~ 10000 K.

scholarly journals BIOREDUCTION AND CHARACTERIZATION OF SILVER NANOPARTICLES FROM OIL PALM EMPTY FRUIT BUNCH

2020 ◽  
Vol 21 (4) ◽  
pp. 177
Author(s):  
Siti Suhartati ◽  
Iwan Syahjoko Saputra ◽  
Dwinna Rahmi ◽  
Yoki Yulizar ◽  
Sudirman Sudirman
Keyword(s):  
Silver Nanoparticles ◽  
Oil Palm ◽  
Average Particle Size ◽  
Average Particle ◽  
Face Centered Cubic ◽  
Empty Fruit Bunch ◽  
The Face ◽  
Face Centered ◽  
Average Size

BIOREDUCTION AND CHARACTERIZATION OF SILVER NANOPARTICLES FROM OIL PALM EMPTY FRUIT BUNCH (OPEFB). The synthesis of silver nanoparticles was successfully carried out by extracting oil palm empty fruit bunch. The precursor used was silver nitrate (AgNO3) with a concentration of 9x10-4 M and 5 wt% of the oil palm empty fruit bunch extract. OPEFB acted as a capping agent in the synthesis of silver nanoparticles. The bioreduction method Ag+ to Ag0 produced a silver nanoparticle colloid in brown color. The results of the UV-Vis spectrophotometer showed the silver nanoparticles colloids spectrum at a wavelength of 420 nm with an absorbance value of 0.5. FTIR shows the reduction and shift of absorption peak in the hydroxyl functional group (-OH) at wavenumbers of 3323 cm-1 and the presence of absorption peaks at 560 cm-1. While, XRD pattern showed the specific crystallinity peaks of silver nanoparticles at 2θ: 33.24°; 39.98°; 61.23°; dan 79.13° respectively with the face-centered cubic crystal structure (FCC) and crystallite size of 15 nm. PSA analysis showed two specific peaks with an average size distribution silver nanoparticles of 43.5 nm and a PDI value of 0.4. Analysis of TEM shows the average particle size of 20 nm with a spherical particle shape.

Utilization of Aquatic Weed for Environmental and Rapid Synthesis of Silver Nanoparticles

2013 ◽  
Vol 662 ◽  
pp. 80-83 ◽  
Author(s):  
Mana Intarasawang ◽  
Kheamrutai Thamaphat
Keyword(s):  
Silver Nanoparticles ◽  
Water Hyacinth ◽  
Cell Structure ◽  
Silver Ions ◽  
Spherical Particles ◽  
Aquatic Weed ◽  
Face Centered Cubic ◽  
X Ray ◽  
Light Yellow ◽  
Face Centered

In the present study, we demonstrated an effective cost and environmentally benign method to synthesize the silver nanoparticles (AgNPs) using aquatic weed namely water hyacinth as a reducing agent. Ultraviolet irradiation was also combined in the process to enhance the reaction rate. The aqueous silver ions mixed with water hyacinth leaf extract under UV irradiation were reduced to AgNPs. The mixture color was changed from light yellow to yellowish-brown color within 5 min due to excitation of surface plasmon vibrations in AgNPs. The formation of AgNPs was confirmed by UV-visible spectroscopy, X-ray diffraction (XRD) spectrometry, energy dispersive X-ray (EDX) analysis and transmission electron microscopy (TEM). The AgNPs were found to be polycrystalline in nature and spherical particles with mean diameter of 12.54 ± 0.19 nm. The XRD pattern peaked at different diffraction angles corresponding to the (111), (200), (220), and (311) planes indicated that AgNPs have face-centered cubic (fcc) unit cell structure. This proposed method revealed that unwanted plant can utilize in nano-manufacturing as well.

scholarly journals Green Synthesis of Silver Nanoparticles Using Terminalia Bellirica Leaves Extract

2021 ◽  
Vol 16 (2) ◽  
Author(s):  
Rashmi Rawat ◽  
M. C. Purohit ◽  
Mahender Singh ◽  
Ankit S. Bartwal
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Ag Nanoparticles ◽  
Metallic Nanoparticles ◽  
Skin Diseases ◽  
Average Particle Size ◽  
Spherical Shape ◽  
Average Particle ◽  
Tem Analysis ◽  
Terminalia Bellirica

Nowadays, for green synthesis, different parts of plant extracts are being used for the synthesis of metallic nanoparticles. Green routes for the synthesis of metallic nanoparticles are most favorable method over conventional methods. In this study, we have synthesized Ag nanoparticles from Terminalia bellirica aqueous leaves extract with AgNO3 solution. Recently, silver nanoparticles are being used for their beneficial effects on human health. It has been reported that it helps in lowering in cholesterol, blood pressure, thirst, pile, skin diseases and treatment of diabetes. Ag nanoparticles were characterized by UV-Vis spectrophotometer, XRD, TEM and FTIR techniques. It was found that Ag+ ion reduced into Ag0 and showed absorption band at 447 nm. X-Ray Diffraction for structural determination confirms the crystalline Ag nanoparticles. TEM analysis confirms the average particle size is less than 30 nm with spherical shape. FTIR spectra confirms the presence of active biomolecules (alcohols, phenols, proteins and nitro compounds) of plant leaves extract which played a key role in formation of Ag nanoparticles.

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