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Journal articles on the topic 'CHITOSAN-SILVER NANOPARTICLE'

Author: Grafiati

Published: 11 September 2023

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1

Akmaz, Solmaz, Esra Dilaver Adıgüzel, Muzaffer Yasar, and Oray Erguven. "The Effect of Ag Content of the Chitosan-Silver Nanoparticle Composite Material on the Structure and Antibacterial Activity." Advances in Materials Science and Engineering 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/690918.

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The aim of this study is to investigate the antibacterial properties and characterization of chitosan-silver nanoparticle composite materials. Chitosan-silver nanoparticle composite material was synthesized by adding AgNO3and NaOH solutions to chitosan solution at 95°C. Different concentrations (0,02 M, 0,04 M, and 0,06 M) of AgNO3were used for synthesis. Chitosan-silver nanoparticle composite materials were characterized by Transmission electron microscopy (TEM), X-ray diffraction (XRD), ultraviolet (UV) spectrophotometer, and Fourier transform infrared (FTIR) spectrometer techniques.Escheric

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Rohaeti, Eli, Endang WLFX, and Anna Rakhmawati. "Bacterial Cellulose From Rice Waste Water With Addition Chitosan, Glycerol, And Silver Nanoparticle." Molekul 11, no. 1 (2016): 9. http://dx.doi.org/10.20884/1.jm.2016.11.1.190.

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This study aimed to prepare silver nanoparticles chemically, deposite silver nanoparticles on bacterial cellulose-chitosan-glycerol composite based rice waste water, as well as test the antibacterial activity of bacterial cellulose and its composite. Preparation of silver nanoparticles was conducted by chemical reduction of silver nitrate solution, as well as trisodium citrate as the reductor. Bacterial cellulose from rice waste water is fermented by the bacteria Acetobacter xylinum for 7 days. The dried bacterial cellulose was composited with chitosan and glycerol by immersion method on 2% of

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3

Rohaeti, Eli, Endang Widjajanti Laksono FX, and Anna Rakhmawati. "Kemudahan Biodegradasi Selulosa Bakteri dari Limbah Cucian Beras dengan Penambahan Gliserol, Kitosan, dan Nanopartikel Perak." Jurnal Kimia VALENSI 2, no. 1 (2016): 35–44. http://dx.doi.org/10.15408/jkv.v2i1.3083.

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The objectives of this research were to study the effect of glycerol and chitosan addition toward biodegradability of cellulose based rice waste water, the effect of biodegradation time toward mass lost and biodegradability, and determine functional group and crystalinity of the highest biodegradability composite. Bacterial celluloses were prepared from 100 mL rice waste water that fermented by Acetobacter xylinum for 7 days with addition of glycerol (for Cellulose-Glycerol and Cellulose-Glycerol-Chitosan). Then, bacterial celluloses were immersed in chitosan solution (for Cellulose-Chitosan a

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Wulandari, Ika O., Baiq E. Pebriatin, Vita Valiana, Saprizal Hadisaputra, Agus D. Ananto, and Akhmad Sabarudin. "Green Synthesis of Silver Nanoparticles Coated by Water Soluble Chitosan and Its Potency as Non-Alcoholic Hand Sanitizer Formulation." Materials 15, no. 13 (2022): 4641. http://dx.doi.org/10.3390/ma15134641.

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The synthesis of silver nanoparticles using plant extracts, widely known as a green synthesis method, has been extensively studied. Nanoparticles produced through this method have applications as antibacterial agents. Bacterial and viral infection can be prevented by use of antibacterial agents such as soap, disinfectants, and hand sanitizer. Silver nanoparticles represent promising hand sanitizer ingredients due to their antibacterial activity and can enable reduced use of alcohol and triclosan. This study employed silver nanoparticles synthesized using Kepok banana peel extract (Musa paradis

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5

Nazmul Islam, A. B. M. "Preparation of Chitosan-Silver Nanoparticles in Nonaqueous Medium under Heating." International Letters of Chemistry, Physics and Astronomy 58 (September 2015): 1–8. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.58.1.

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Chitosan-silver nanoparticles are prepared in nonaqueous medium. In this work, sodium dodecyl sulfate (SDS) was introduced into the dimethylformamide (DMF) solution during silver reduction from solution of its precursor salt AgNO3, acting as a stabilizing agent to prevent aggregation of silver nanoparticles, while chitosan is used as the solid support to embedded silver particles therein, resulting in chitosan-silver (CS-Ag) nanoparticle as suspension in the medium. The reaction started as homogeneous system which turned into heterogeneous with the formation of particles. The properties of CS-

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6

Nazmul Islam, A. B. M. "Preparation of Chitosan-Silver Nanoparticles in Nonaqueous Medium under Heating." International Letters of Chemistry, Physics and Astronomy 58 (September 2, 2015): 1–8. http://dx.doi.org/10.56431/p-3685e3.

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Chitosan-silver nanoparticles are prepared in nonaqueous medium. In this work, sodium dodecyl sulfate (SDS) was introduced into the dimethylformamide (DMF) solution during silver reduction from solution of its precursor salt AgNO3, acting as a stabilizing agent to prevent aggregation of silver nanoparticles, while chitosan is used as the solid support to embedded silver particles therein, resulting in chitosan-silver (CS-Ag) nanoparticle as suspension in the medium. The reaction started as homogeneous system which turned into heterogeneous with the formation of particles. The properties of CS-

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7

Subitha, R., P. Senthilkumar, and K. Gobinath. "In vivo wound healing potential of chitosan gel based silver nanoparticles synthesized from Martynia annua." Research Journal of Biotechnology 17, no. 9 (2022): 119–33. http://dx.doi.org/10.25303/1709rjbt1190133.

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A green synthesis of silver nanoparticles (AgNPs) incorporated chitosan gel for wound healing applications was developed using medicinal plant Martynia annua fresh leaves extract. The utilization of various medicinal plant materials for the biosynthesis of nanoparticles is considered a green synthetic technology as it does not require any harmful chemicals. The present study dealt with green synthesized AgNPs from M. annua followed by being incorporating into chitosan gel as a delivery system to evaluate their wound healing potential. Attrition of silver nitrate was used to synthesize silver n

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Zemlyakova, Evgeniya S., Anna V. Tcibulnikova, Vasilyi A. Slezhkin, Andrey Yu Zubin, Ilya G. Samusev, and Valeryi V. Bryukhanov. "The infrared spectroscopy of chitosan films doped with silver and gold nanoparticles." Journal of Polymer Engineering 39, no. 5 (2019): 415–21. http://dx.doi.org/10.1515/polyeng-2018-0356.

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AbstractThis work presents the dependences of the absorption intensity of the acid-soluble chitosan biopolymer films in the infrared (IR) region of the spectrum on the concentrations of silver and gold nanoparticles (NPs) of different morphologies. The interaction mechanisms in the vibrational spectra overlapping area of the silver NPs and chitosan molecules (2500–3500 cm−1) were observed. The influence of the metal NPs on the dipole moments of the OH-, NH3+- and CH-chitosan molecule group oscillations was established. This interaction leads to a linear increase of the IR absorption intensity

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9

Hermosilla, Edward, Marcela Díaz, Joelis Vera, et al. "Synthesis of Antimicrobial Chitosan-Silver Nanoparticles Mediated by Reusable Chitosan Fungal Beads." International Journal of Molecular Sciences 24, no. 3 (2023): 2318. http://dx.doi.org/10.3390/ijms24032318.

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Nanoparticles, especially silver nanoparticles (Ag NPs), have gained significant attention in recent years as potential alternatives to traditional antibiotics for treating infectious diseases due to their ability to inhibit the growth of microorganisms effectively. Ag NPs can be synthesized using fungi extract, but the method is not practical for large-scale production due to time and biomass limitations. In this study, we explore the use of chitosan to encapsulate the mycelia of the white-rot fungus Stereum hirsutum and form chitosan fungal beads for use in multiple extractions and nanoparti

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Susilowati, Endang, Mohammad Masykuri, Maria Ulfa, and Dyah Puspitasari. "Preparation of Silver-Chitosan Nanocomposites Colloidal and Film as Antibacteri Material." JKPK (Jurnal Kimia dan Pendidikan Kimia) 5, no. 3 (2020): 300. http://dx.doi.org/10.20961/jkpk.v5i3.46711.

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<p>Colloidal nanocomposites silver-chitosan have been made. Silver nanoparticles were produced by chemical reduction methods assisted microwave irradiation using chitosan from crab shells as a reducing agent and stabilizer, AgNO<sub>3 </sub>as a precursor and NaOH as an accelerator. This study investigated AgNO<sub>3</sub> concentration toward localized surface plasmon resonance (LSPR) phenomenon of nanocomposites colloidal. The size and shape of the silver nanoparticles were confirmed by TEM. Furthermore, the stability of the storage was observed for twelve weeks

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11

Rajeshkumar, Shanmugam, Munusamy Tharani, Vijayarangan Devi Rajeswari, et al. "Synthesis of greener silver nanoparticle-based chitosan nanocomposites and their potential antimicrobial activity against oral pathogens." Green Processing and Synthesis 10, no. 1 (2021): 658–65. http://dx.doi.org/10.1515/gps-2021-0060.

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Abstract In the present investigation, silver nanoparticles (AgNPs) and silver nanoparticle-based chitosan nanocomposite were synthesized using Cissus arnottiana leaf extract. The biosynthesized nanoparticles and nanocomposites were characterized using SEM, TEM, and AFM to uncover the morphological characteristics such as size and shape. The SEM image depicts the size of the nanocomposite to be 30–40 nm and shape as spherical. The TEM results reveal the shape of the nanocomposite to be spherical and size around 10–60 nm. The XRD results show the crystalline nature of the AgNPs-based chitosan n

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Nate, Zondi, Makwena Justice Moloto, Pierre Kalenga Mubiayi, and Precious Nokwethemba Sibiya. "Green synthesis of chitosan capped silver nanoparticles and their antimicrobial activity." MRS Advances 3, no. 42-43 (2018): 2505–17. http://dx.doi.org/10.1557/adv.2018.368.

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AbstractChitosan is a polymeric compound with functional groups which enable surface binding to nanoparticles and antibacterial activity. The antimicrobial activity was studied using silver nanoparticles with varied concentrations of chitosan. The nanoparticles were synthesized through a simple and environmentally friendly method at room temperature. Spherical particles with average sizes between 2 and 6 nm were obtained and their crystallinity showed a face-centered cubic phase. The evidence of chitosan presence on the nanoparticle surface was confirmed by the characteristic diffraction peak

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13

Huang, Liyi, Tianhong Dai, Yi Xuan, George P. Tegos, and Michael R. Hamblin. "Synergistic Combination of Chitosan Acetate with Nanoparticle Silver as a Topical Antimicrobial: Efficacy against Bacterial Burn Infections." Antimicrobial Agents and Chemotherapy 55, no. 7 (2011): 3432–38. http://dx.doi.org/10.1128/aac.01803-10.

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ABSTRACTChitosan and nanoparticle silver are both materials with demonstrated antimicrobial properties and have been proposed singly or in combination as constituents of antimicrobial burn dressings. Here, we show that they combine synergistically to inhibit thein vitrogrowth of Gram-positive methicillin-resistantStaphylococcus aureus(MRSA) and Gram-negative bacteria (Pseudomonas aeruginosa,Proteus mirabilis, andAcinetobacter baumannii), as judged by bioluminescence monitoring and isobolographic analysis, and also produce synergistic killing after 30 min of incubation, as measured by a CFU ass

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Ginting, Junius Gian, Poppy Anjelisa Zaitun Hasibuan, and Yuandani. "Antifungal Activity of Patch Silver Nanoparticles and Chitosan with Cellulose Nanofibers Carriers against Trichophyton rubrum and Pitysporum ovale." Indonesian Journal of Pharmaceutical and Clinical Research 4, no. 2 (2021): 31–37. http://dx.doi.org/10.32734/idjpcr.v4i2.6295.

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Abstract. Wounds that are not treated and are kept open will provide an entrance for microorganisms from outside that can cause infection. One of the medical needs whose demand continues to increase is wound dressings. Chitosan is known to have wound healing activity by stimulating the formation of new tissue, and silver nanoparticles have good antimicrobial activity. Silver nanoparticles and chitosan with cellulose nanofibers carrier are made in the form of patches with the ratio formula between cellulose nanofibers and chitosan/silver nanoparticles are 1:9, 2:8, 3:8, 4:7, 5:5, 6:4, 7:3, 8:2,

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15

Hidayat, Muhammad Iqbal, Muhammad Adlim, Ilham Maulana, and Muhammad Zulfajri. "Immobilization of Silver Nanoparticles on Chitosan-Coated Silica-Gel-Beads and the Antibacterial Activity." Key Engineering Materials 892 (July 13, 2021): 36–42. http://dx.doi.org/10.4028/www.scientific.net/kem.892.36.

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Silver nanoparticles (Ag0) have attracted the most attention due to their broad antimicrobial application and outstanding activity. The silver nanoparticles are usually in colloidal form, then immobilization the colloid onto solid support is still interesting to explore. In this work, a new method for silver colloidal nanoparticle immobilization on silica gel beads (SiG), which was then symbolized as Ag0-[chi-SiG] was conducted and characterized successfully. The finding proved that SiG must be coated with three chitosan film layers to give stable support for silver nanoparticles. This coating

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Susilowati, Endang, Sri Retno Dwi Ariani, Lina Mahardiani, and Luthfia Izzati. "Synthesin and Characterization Chitosan Film with Silver Nanoparticle Addition As A Multiresistant Antibacteria Material." JKPK (Jurnal Kimia dan Pendidikan Kimia) 6, no. 3 (2021): 371. http://dx.doi.org/10.20961/jkpk.v6i3.57101.

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<p>The synthesis of chitosan films with the addition of silver nanoparticles (AgNps) has been carried out in 2 stages. The first stage is to make colloidal silver nanoparticles with chitosan as a stabilizer and a reducing agent with NaOH as an accelerator and assisted by microwave irradiation. The second stage is to make a film from colloidal silver nanoparticles-chitosan by casting method. The formation of silver nanoparticles was identified using a UV-Vis spectrophotometer and TEM. Chitosan films with the addition of AgNps were characterized by chemical, physical and mechanical propert

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Jokar, Maryam, Russly Abdul Rahman, and Luqman Chuah Abdullah. "Physical and Antimicrobial Characterization of Self Assembled Silver Nanoparticle/Chitosan onto Low Density Polyethylene Film as Active Packaging Polymer." Journal of Nano Research 27 (March 2014): 53–64. http://dx.doi.org/10.4028/www.scientific.net/jnanor.27.53.

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Colloidal Silver nanoparticles with a size of 5 nm produced by chemical reduction using poly ethylene glycol (PEG 200). Layers of silver nanoparticles and chitosan were deposited onto low density polyethylene (LDPE) substrate by layer by layer (LBL) self-assembly technique. Silver nanocomposite films were built by sequential dipping of LDPE film in either anionic silver nanoparticles or cationic chitosan. Silver nanoparticles and chitosan led to the formation of nanocomposite films possessing antimicrobial properties with the thickness of 2, 4, 8, 12 and 20 layers. Silver nanocomposite films w

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18

Mi, Fwu-Long, Shao-Jung Wu, Wen-Qi Zhong, and Cheng-Yu Huang. "Preparation of a silver nanoparticle-based dual-functional sensor using a complexation–reduction method." Physical Chemistry Chemical Physics 17, no. 33 (2015): 21243–53. http://dx.doi.org/10.1039/c4cp05012f.

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A dual-functional sensor based on silver nanoparticles was synthesized by a two-stage procedure consisting of a low-temperature chitosan–Ag<sup>+</sup> complexation followed by a high-temperature reduction of the complex to form chitosan-capped silver nanoparticles (CS-capped Ag NPs).

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19

Rohaeti, Eli, Endang W. Laksono, and Anna Rakhmawati. "BACTERIAL CELLULOSE FROM RICE WASTE WATER AND ITS COMPOSITE WHICH ARE DEPOSITED NANOPARTICLE AS AN ANTIMICROBIAL MATERIAL." ALCHEMY Jurnal Penelitian Kimia 12, no. 1 (2016): 70. http://dx.doi.org/10.20961/alchemy.12.1.946.70-87.

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<pre><span lang="EN-GB">Bacterial cellulose (C) and its composites were synthesized from rice waste water<strong> </strong>with addition of glycerol (G) and chitosan (Ch).</span><strong></strong><span lang="EN-GB">Antibacterial activity of the C, the bacterial cellulose-chitosan composite (CCh), and the bacterial cellulose – glycerol - chitosan composite (CGCh) which were deposited silver nanoparticles against <em>S. aureus</em>, <em>E.</em> <em>coli</em>, and yeast <em>C. albicans</em> has been con

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Rohaeti, Eli, Endang W. Laksono, and Anna Rakhmawati. "BACTERIAL CELLULOSE FROM RICE WASTE WATER AND ITS COMPOSITE WHICH ARE DEPOSITED NANOPARTICLE AS AN ANTIMICROBIAL MATERIAL." ALCHEMY Jurnal Penelitian Kimia 12, no. 1 (2016): 70. http://dx.doi.org/10.20961/alchemy.v12i1.946.

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<pre><span lang="EN-GB">Bacterial cellulose (C) and its composites were synthesized from rice waste water<strong> </strong>with addition of glycerol (G) and chitosan (Ch).</span><strong></strong><span lang="EN-GB">Antibacterial activity of the C, the bacterial cellulose-chitosan composite (CCh), and the bacterial cellulose – glycerol - chitosan composite (CGCh) which were deposited silver nanoparticles against <em>S. aureus</em>, <em>E.</em> <em>coli</em>, and yeast <em>C. albicans</em> has been con

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Shanmugam, Rajeshkumar, Rajaduraipandian Subramaniam, Sabeena Gabrial Kathirason, et al. "Curcumin-Chitosan Nanocomposite Formulation Containing Pongamia pinnata-Mediated Silver Nanoparticles, Wound Pathogen Control, and Anti-Inflammatory Potential." BioMed Research International 2021 (December 23, 2021): 1–10. http://dx.doi.org/10.1155/2021/3091587.

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Background. Because of its diverse range of use in several ethics of diagnosis and care of multiple diseases, nanotechnology has seen remarkable growth and has become a key component of medical sciences. In recent years, there has been rapid advancement in medicine and biomaterials. Nanomedicine aids in illness prevention, diagnosis, monitoring, and treatment. Aim. The purpose of this work is to evaluate the antibacterial, anti-inflammatory, and cytotoxic capabilities of green produced silver nanoparticle with the addition of curcumin-assisted chitosan nanocomposite (SCCN) against wound pathog

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Vercik, Luci Cristina de Oliveira, Andres Vercik, and Eliana Cristina da Silva Rigo. "Kinetics of silver nanoparticle release from chitosan spheres." MRS Advances 2, no. 19-20 (2017): 1089–94. http://dx.doi.org/10.1557/adv.2017.48.

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ABSTRACTThe kinetics of silver nanoparticles release from chitosan spheres is addressed experimentally and theoretically in this work. From the experimental viewpoint, the study of silver nanoparticles release is performed by measuring the time-dependent UV-Vis spectra of solutions where spheres were dispersed. The UV-VIS spectra intensity reflects the concentration of nanoparticles in the solution. Despite simple expressions for drug release are found in the literature, as those that relate the amount of drug release with the square root of time, a proper modeling might require the inclusion

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Chen, An Pang, Ching Wen Lou, Ya Yuan Chung, Mei Chen Lin, and Jia Horng Lin. "Manufacturing Technique and Antimicrobial Activity of Silver Nanoparticles." Applied Mechanics and Materials 365-366 (August 2013): 1169–72. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.1169.

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Recently, the biomaterial is in rapid development stage, which could be widely applying in medical application, due to its biodegradability, nontoxic and biocompatibility. Chitosan is naturally abundant polymers have the biodegradability, nontoxic and biocompatibility. In this research, the chitosan and silver nitrate were used to develop the antibacterial agent via nanotechnique. In the reaction system, the reaction time and stirring speed were discussed, which will affect the surface plasmon resonance. The particle sizes were measured using transmission electron microscopy (TEM) and UV visib

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Livanovich, K., and T. Shutava. "Influence of Chitosan/Dextran Sulfate Layer-by-Layer Shell on Colloidal Properties of Silver Nanoparticles." International Journal of Nanoscience 18, no. 03n04 (2019): 1940077. http://dx.doi.org/10.1142/s0219581x19400775.

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Colloidal stability of core–shell nanoparticles consisted of silver core and chitosan/dextran sulfate multilayer shell in NaCl and CaCl2 solutions was investigated. The critical concentration of coagulation and the Hamaker constant were calculated depending on the number of bilayers in the shell on the nanoparticle surface. The colloidal stability of the core–shell nanoparticles significantly increases with the shell growth.

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Tiwari, Preeti, Ashish Kumar, and Rajiv Prakash. "Electrochemical detection of azidothymidine on modified probes based on chitosan stabilised silver nanoparticles hybrid material." RSC Advances 5, no. 109 (2015): 90089–97. http://dx.doi.org/10.1039/c5ra15908c.

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Veerapandian, Murugan, X. X. Zhu, and Suzanne Giasson. "Chitosan-modified silver@ruthenium hybrid nanoparticles: evaluation of physico-chemical properties and bio-affinity with sialic acid." Journal of Materials Chemistry B 3, no. 4 (2015): 665–72. http://dx.doi.org/10.1039/c4tb01475h.

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Shinde, Surbhi, Veronica Folliero, Annalisa Chianese, et al. "Synthesis of Chitosan-Coated Silver Nanoparticle Bioconjugates and Their Antimicrobial Activity against Multidrug-Resistant Bacteria." Applied Sciences 11, no. 19 (2021): 9340. http://dx.doi.org/10.3390/app11199340.

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The increase in multidrug-resistant bacteria represents a true challenge in the pharmaceutical and biomedical fields. For this reason, research on the development of new potential antibacterial strategies is essential. Here, we describe the development of a green system for the synthesis of silver nanoparticles (AgNPs) bioconjugated with chitosan. We optimized a Prunus cerasus leaf extract as a source of silver and its conversion to chitosan–silver bioconjugates (CH-AgNPs). The AgNPs and CH-AgNPs were characterized using transmission electron microscopy (TEM), dynamic light scattering (DLS), F

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Islami, Maulida Nirwana, Ni Nyoman Rupiasih, Made Sumadiyasa, and I. B. Sujana Manuaba. "The Study of Current-Voltage (I-V) Characteristic Curve of Chitosan-Silver Nanoparticle Composite Membrane." BULETIN FISIKA 19, no. 2 (2018): 40. http://dx.doi.org/10.24843/bf.2018.v19.i02.p01.

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A study of the current-voltage (I-V) curve of the chitosan-silver nanoparticle composite membrane (Ch-AgNP) has been conducted. Membranes were prepared by casting method using chitosan as matrix, acetic acid 1% as solvent and silver nanoparticle (AgNP) as filler. AgNP used was 100 ?g. As a comparison is a pure chitosan membrane (membrane Ch). The I-V measurement was performed using a cell model consisting of 2 chambers, chambers 1 and 2. The voltage (V) was measured using Ag/AgCl calomel electrode in electrolyte solution of KCl and CaCl2 with concentration of 0.025 M. All measurements were don

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Audita, Rahmania, Khoirunisa Khoirunisa, Hasna' Azizah Azzahra', Bambang Hernawan Nugroho, Habibi Hidayat, and Is Fatimah. "Composite of Polylactic Acid/Chitosan/Ag-Hydroxyapatite Synthesized Using Turmeric Leaves Extract-Mediated Silver Nanoparticle and Snail Shell as Antibacterial Material." EKSAKTA: Journal of Sciences and Data Analysis 2, no. 2 (2021): 116–23. http://dx.doi.org/10.20885/eksakta.vol2.iss1.art14.

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The development of an antibacterial composite of polylactic acid/chitosan/silver nanoparticle-doped hydroxyapatite has been synthesized. The composite was prepared using the silver nanoparticles (AgNPs) green synthesized by using turmeric (Curcuma longa Linn) leaves extract-mediated AgNPs and snail shell as biogenic calcium for hydroxyapatite synthesis. The precipitation method of hydroxyapatite by the doping of AgNPs was the first step, followed by composting with polylactic acid and chitosan as the polymer binder. Physicochemical characterization of the material was studied by using XRD, SEM

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Al-Rasheed, Hessa H., Kholood A. Dahlous, Essam N. Sholkamy, Sameh M. Osman, Omar H. Abd-Elkader, and Ayman El-Faham. "Chitosan-S-triazinyl-bis(2-aminomethylpyridine) and Chitosan-S-triazinyl-bis(8-oxyquinoline) Derivatives: New Reagents for Silver Nanoparticle Preparation and Their Effect of Antimicrobial Evaluation." Journal of Chemistry 2020 (June 25, 2020): 1–8. http://dx.doi.org/10.1155/2020/9590120.

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Herein, we described the modification of chitosan with cyanuric chloride as a mediator for preparation of chitosan-s-triazinyl-bis(2-aminomethylpyridine) and chitosan-s-triazinyl-bis(8-oxyquinoline) derivatives to be used as reagents for preparation of silver nanoparticles under ecofriendly conditions. These two reagents are convenient and effective for reduction of silver ions to silver nanoparticles with particle size less than 10 nm that might be suitable for industrial and medicinal applications. The formation and particle size of AgNPs are characterized by transmission electron microscopy

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Aldakheel, Fahad M., Dalia Mohsen, Marwa M. El Sayed, Khaled Ali Alawam, AbdulKarim S. Binshaya, and Shatha A. Alduraywish. "Silver Nanoparticles Loaded on Chitosan-g-PVA Hydrogel for the Wound-Healing Applications." Molecules 28, no. 7 (2023): 3241. http://dx.doi.org/10.3390/molecules28073241.

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Silver nanoparticle composites have abundant biomedical applications due to their unique antibacterial properties. In the current work, green tea leaf extract was used as a natural reducing agent to synthesize AgNPs (AgNPs) using microwave irradiation technology. Furthermore, microwave irradiation has been used for the preparation of AgNPs/chitosan (Ch) grafted polyvinyl alcohol (PVA) hydrogel samples. To approve the accomplishment of AgNPs hydrogel polymer, UV-spectrum, TEM, and FT-IR spectrum analyses and the release of silver ions, actions were taken. The wound-healing ability of the prepar

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Yang, Huanlei, Shuxin Zhang, and Jinhua Yan. "Chitosan-Reinforced MFC/NFC Aerogel and Antibacterial Property." Advances in Polymer Technology 2020 (August 26, 2020): 1–9. http://dx.doi.org/10.1155/2020/7890215.

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MFC/NFC aerogel has water sensitivity, and it should be improved in strength in water before application. Chitosan was investigated as a MFC/NFC aerogel reinforcing agent in this paper. The reinforced aerogel showed slightly tighter structure and very good water stability and mechanical strength. FTIR disclosed the chemical bonds formed between chitosan and cellulose. Nanoparticles of silver (Ag-NPs) were loaded using the reinforced aerogel. The excellent Ag-NP monodistribution on the aerogel was expressed by TEM. Both chitosan-reinforced Ag-NPs loaded MFC aerogel and NFC aerogel and expressed

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Nabid, Mohammad Reza, Yasamin Bide, and Maryam Abuali. "Coppercoresilvershell nanoparticle–yolk/shell Fe3O4@chitosan-derived carbon nanoparticle composite as an efficient catalyst for catalytic epoxidation in water." RSC Adv. 4, no. 68 (2014): 35844–51. http://dx.doi.org/10.1039/c4ra05283h.

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The fabrication of yolk/shell spheres consisting of a magnetic core and a chitosan-derived porous carbon shell, and plenty of tiny copper<sub>core</sub>silver<sub>shell</sub> nanoparticles confined within the porous shell, as a catalyst for epoxidation reaction is reported.

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Li, Rongfu, Zhaorong Xu, Qiong Jiang, Yunquan Zheng, Zhaohong Chen, and Xiaodong Chen. "Characterization and biological evaluation of a novel silver nanoparticle-loaded collagen-chitosan dressing." Regenerative Biomaterials 7, no. 4 (2020): 371–80. http://dx.doi.org/10.1093/rb/rbaa008.

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Abstract Effective coverage and protection is a priority in wound treatment. Collagen and chitosan have been widely used for wound dressings due to their excellent biological activity and biocompatibility. Silver nanoparticles (AgNPs) have a powerful antibacterial effect. In this study, a macromolecular and small-molecular collagen mixed solution, a macromolecular and small-molecular chitosan mixed solution were prepared, and a silver nanoparticle-loaded collagen-chitosan dressing (AgNP-CCD) has been proposed. First, the effects of a collagen-chitosan mixed solution on the proliferation of hum

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More, Dikeledi S., Makwena J. Moloto, Nosipho Moloto, and Kgabo P. Matabola. "Silver/Copper Nanoparticle-Modified Polymer Chitosan/PVA Blend Fibers." International Journal of Polymer Science 2021 (June 30, 2021): 1–12. http://dx.doi.org/10.1155/2021/6217609.

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In this study, chitosan (CS)/poly(vinyl alcohol) (PVA) (CS/PVA) blend nanofibers with varying weight ratios and silver (Ag)/copper (Cu)/CS/PVA composite fibers have been prepared successfully by the electrospinning process. The tip-to-collector distance was kept at 15 cm, and the applied voltage was varied from 15 to 25 kV. The effects of the weight ratios and applied voltage on the morphology and diameter of the fibers were investigated. The resultant fibers were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectros

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Apryatina, K. V., M. V. Gribanova, A. V. Markin, S. S. Sologubov, and L. A. Smirnova. "Silver nanoparticle–chitosan complexes and properties of their composites." Nanotechnologies in Russia 11, no. 11-12 (2016): 766–75. http://dx.doi.org/10.1134/s1995078016060033.

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Prabhahar, M., Gomathi Kannayiram, S. Prakash, et al. "Physicochemical Characterization of Star Anise Silver Nanoparticles Incorporated Chitosan Biomaterial for Absorb Water and Cure Wounds." Adsorption Science & Technology 2022 (July 4, 2022): 1–9. http://dx.doi.org/10.1155/2022/7522512.

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Chronic wounds threaten the geriatric society worldwide irrespective of their social status. The current treatment approach to cure chronic ailments is associated with its demerits. A novel treatment approach that is coordinated is required to adsorb water from wounds and cure chronic wounds. Star anise condiment used in the Indian kitchen is shown to have the potency to cure various ailments. In this study, silver nanoparticles were prepared using the star anise extract. The biological potency of star anise extract was confirmed through Gas Chromatography Mass Spectroscopy, antioxidant assay,

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Nguyen, Tan Dat, Thanh Truc Nguyen, Khanh Loan Ly, et al. "In Vivo Study of the Antibacterial Chitosan/Polyvinyl Alcohol Loaded with Silver Nanoparticle Hydrogel for Wound Healing Applications." International Journal of Polymer Science 2019 (March 21, 2019): 1–10. http://dx.doi.org/10.1155/2019/7382717.

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Silver nanoparticles have attracted great interests widely in medicine due to its great characteristics of antibacterial activity. In this research, the antibacterial activity and biocompatibility of a topical gel synthesized from polyvinyl alcohol, chitosan, and silver nanoparticles were studied. Hydrogels with different concentrations of silver nanoparticles (15 ppm, 30 ppm, and 60 ppm) were evaluated to compare their antibacterial activity, nanoparticles’ sizes, and in vivo behaviors. The resulted silver nanoparticles in the hydrogel were characterized by TEM showing the nanoparticles’ size

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Mostafa, Ehab M., Mohamed A. Abdelgawad, Arafa Musa, et al. "Chitosan Silver and Gold Nanoparticle Formation Using Endophytic Fungi as Powerful Antimicrobial and Anti-Biofilm Potentialities." Antibiotics 11, no. 5 (2022): 668. http://dx.doi.org/10.3390/antibiotics11050668.

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Nanotechnology is emerging as a new technology with encouraging innovations. Global antibiotic use has grown enormously, with antibiotic resistance increasing by about 80 percent. In view of this alarming situation, intensive research has been carried out into biogenic nanoparticles and their antibacterial, antifungal, and antitumor activities. Many methods are available to enhance stability and dispersion via peroration of conjugate with a polymer, such as chitosan, and other bioactive natural products. Two marine fungi were isolated and identified as Aspergillus sp. and Alternaria sp. via se

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Sharma, Shilpa, Pallab Sanpui, Arun Chattopadhyay, and Siddhartha Sankar Ghosh. "Fabrication of antibacterial silver nanoparticle—sodium alginate–chitosan composite films." RSC Advances 2, no. 13 (2012): 5837. http://dx.doi.org/10.1039/c2ra00006g.

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Jung, Jeyoung, Gownolla Malegowd Raghavendra, Dowan Kim, and Jongchul Seo. "Improving properties of Hanji by coating chitosan–silver nanoparticle solution." International Journal of Biological Macromolecules 93 (December 2016): 933–39. http://dx.doi.org/10.1016/j.ijbiomac.2016.09.067.

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Tankhiwale, Rasika, and S. K. Bajpai. "Silver-nanoparticle-loaded chitosan lactate films with fair antibacterial properties." Journal of Applied Polymer Science 115, no. 3 (2010): 1894–900. http://dx.doi.org/10.1002/app.31168.

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Alshehri, Mohammed Ali, Al Thabiani Aziz, Subrata Trivedi, and Chellasamy Panneerselvam. "Efficacy of chitosan silver nanoparticles from shrimp-shell wastes against major mosquito vectors of public health importance." Green Processing and Synthesis 9, no. 1 (2020): 675–84. http://dx.doi.org/10.1515/gps-2020-0062.

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AbstractMosquito-borne diseases are causing serious damage to public health worldwide, and control of these deadly mosquito vectors is a major thrust area for epidemiologists and public health workers. Therefore, the present research reports an eco-friendly solution with multipotency of silver nanoparticle fabricated from shrimp shell biowaste in controlling mosquitoes and bacterial pathogens. The biofabricated chitosan silver nanoparticles (Cs-AgNPs) were confirmed by UV-visible spectroscopy, transmission electron microscopy (TEM), Fourier transform infrared spectroscopy, energy dispersive X-

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Torabfam, Milad, and Hoda Jafarizadeh-Malmiri. "Microwave-enhanced silver nanoparticle synthesis using chitosan biopolymer: optimization of the process conditions and evaluation of their characteristics." Green Processing and Synthesis 7, no. 6 (2018): 530–37. http://dx.doi.org/10.1515/gps-2017-0139.

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Abstract A facile and green synthesis of silver nanoparticles (AgNPs) by aqueous chitosan solution and microwave irradiation is proposed as a cost effective and environmentally benevolent alternative to chemical and physical methods. With this aim, different amounts of chitosan solution (3–9 ml) with several concentration (4–6% w/v) and 3 ml of the silver salt solution (0.5% w/v) were mixed and microwave irradiated for 100 s. Response surface methodology (RSM) was used to evaluate the effects of the amount and concentration of chitosan solution on the particle size and concentration of the syn

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Vo, Quoc Khuong, Duc Duy Phung, Quynh Nhu Vo Nguyen, et al. "Controlled Synthesis of Triangular Silver Nanoplates by Gelatin–Chitosan Mixture and the Influence of Their Shape on Antibacterial Activity." Processes 7, no. 12 (2019): 873. http://dx.doi.org/10.3390/pr7120873.

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Triangular silver nanoplates were prepared by using the seeding growth approach with the presence of citrate-stabilized silver seeds and a mixture of gelatin–chitosan as the protecting agent. By understanding the critical role of reaction components, the synthesis process was improved to prepare the triangular nanoplates with high yield and efficiency. Different morphologies of silver nanostructures, such as triangular nanoplates, hexagonal nanoprisms, or nanodisks, can be obtained by changing experimental parameters, including precursor AgNO3 volume, gelatin–chitosan concentration ratios, and

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K V, Bharkhavy, Pushpalatha C, Latha Anandakrishna, Niranjana Prabhu T, Lakshmi Rajamma, and Shashanka H M. "Antimicrobial Activity of Silver Nanoparticles: An In-Vitro Study." ECS Transactions 107, no. 1 (2022): 14755–63. http://dx.doi.org/10.1149/10701.14755ecst.

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To evaluate the antimicrobial activity of the silver nanoparticles suspended in Chitosan against Streptococcus mutans, the important causative pathogen for dental caries. Methodology: Antimicrobial activity was tested by performing the Agar Disc Diffusion test and the diameter of zone of inhibition (ZOI) was taken as the measure of antibacterial activity for the test sample (sample T), positive control, and negative control. The lack of formation of zone inhibition was construed as the absence of antibacterial activity. The antibacterial activity is articulated to be resistant, when a zone of

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Mahasawat, Pawika, Ketsarin Hlongkeaw, and Sutthida Charoenrit. "Effect of Chitosan and Alginate Concentration on Size and Bactericidal Activity against Escherichia coli of Chitosan/Alginate/Silver Nanoparticle Beads." Applied Mechanics and Materials 855 (October 2016): 54–59. http://dx.doi.org/10.4028/www.scientific.net/amm.855.54.

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Silver nanoparticles have been used in combination with biological polymer for antibacterial application. This study prepared chitosan/alginate/AgNP beads with varying chitosan and alginate concentration to use as an antibacterial material. The sizes of neat beads were larger (1286 ± 172, 1344 ± 142 and 1529 ± 73 μm for C1, C2 and C3, respectively) with increasing concentration of chitosan and alginate. Moreover, smaller beads were observed for the chitosan/alginate/AgNP beads, in which their sizes were 1151 ± 201, 1261 ± 204 and 1324 ± 198 µm for S1, S2 and S3, respectively, when compared to

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Mirda, Erisna, Rinaldi Idroes, Khairan Khairan, et al. "Synthesis of Chitosan-Silver Nanoparticle Composite Spheres and Their Antimicrobial Activities." Polymers 13, no. 22 (2021): 3990. http://dx.doi.org/10.3390/polym13223990.

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Synthesis of silver nanoparticles–chitosan composite particles sphere (AgNPs-chi-spheres) has been completed and its characterization was fulfilled by UV–vis spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and zetasizer nano. UV–vis spectroscopy characterization showed that AgNPs-chi-spheres gave optimum absorption at a wavelength of 410 nm. The XRD spectra showed that the structure of AgNPs-chi-spheres were crystalline and spherical. Characterization by SEM showed that AgNPs-chi-spheres, with the addition of 20% of Na

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Hernández-Vargas, Julia, J. Betzabe González-Campos, Javier Lara-Romero, et al. "Chitosan/MWCNTs-decorated with silver nanoparticle composites: Dielectric and antibacterial characterization." Journal of Applied Polymer Science 131, no. 9 (2013): n/a. http://dx.doi.org/10.1002/app.40214.

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Francesko, Antonio, Marta Cano Fossas, Petya Petkova, Margarida M. Fernandes, Ernest Mendoza, and Tzanko Tzanov. "Sonochemical synthesis and stabilization of concentrated antimicrobial silver-chitosan nanoparticle dispersions." Journal of Applied Polymer Science 134, no. 30 (2017): 45136. http://dx.doi.org/10.1002/app.45136.

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