scholarly journals Fruit waste (peel) as bio-reductant to synthesize silver nanoparticles with antimicrobial, antioxidant and cytotoxic activities

2018 ◽  
Vol 16 (3) ◽  
pp. 221-231 ◽  
Author(s):  
Annu Annu ◽  
Shakeel Ahmed ◽  
Gurpreet Kaur ◽  
Praveen Sharma ◽  
Sandeep Singh ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Cytotoxic Activities ◽  
Synthesize Silver Nanoparticles ◽  
Fruit Waste

scholarly journals Green ultrasonic synthesis, Characterization and Antibacterial activity of Silver and Gold Nanoparticles mediated by Ganoderma lucidum extract

2020 ◽  
Vol 4 (2) ◽  
Keyword(s):  
Gold Nanoparticles ◽  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Metal Nanoparticles ◽  
Cytotoxic Activities ◽  
Gold And Silver Nanoparticles ◽  
Silver And Gold Nanoparticles ◽  
E Coli ◽  
Inhibition Zones

Metal nanoparticles possess an extensive scientific and technological significance due to their unique physiochemical properties and their potential applications in different fields like medicine. Silver and gold nanoparticles have shown to have antibacterial and cytotoxic activities. Conventional methods used in the synthesis of the metal nanoparticles involve use of toxic chemicals making them unsuitable for use in medical field. In our continued effort to explore for simple and eco-friendly methods to synthesize the metal nanoparticles, we here describe synthesis and characterization of gold and silver nanoparticles using Gonaderma lucidum, wild non-edible medicinal mushroom. G. lucidum mushroom contain bioactive compounds which can be involved in the reduction, capping and stabilization of the nanoparticles. Antibacterial activity analysis was done on E. coli and S. aureus. The synthesis was done on ultrasonic bath. Characterization of the metal nanoparticles was done by UV-VIS., High Resolution Transmission Electron Microscope (HRTEM) and FTIR. HRTEM analysis showed that both silver and gold nanoparticles were spherical in shape with an average size of 15.82±3.69 nm for silver and 24.73±5.124nm for gold nanoparticles (AuNPs). FTIR analysis showed OH and -C=C- stretching vibrations, an indication of presence of functional groups of biomolecules capping both gold and silver nanoparticles. AgNPs showed inhibition zones of 15.5±0.09mm and 13.3±0.14mm while AuNPs had inhibition zones of 14.510±0.35 and 13.3±0.50mm on E. coli and S. aureus respectively. The findings indicate the potential use of AgNPs and AuNPs in development of drugs in management of pathogenic bacteria.

Solution-combustion: the versatile route to synthesize silver nanoparticles

2010 ◽  
Vol 13 (6) ◽  
pp. 2553-2561 ◽  
Author(s):  
Poonam Sharma ◽  
Gurmeet Singh Lotey ◽  
Sukhpreet Singh ◽  
N. K. Verma
Keyword(s):  
Silver Nanoparticles ◽  
Solution Combustion ◽  
Synthesize Silver Nanoparticles

scholarly journals Synthesis of Plant-Mediated Silver Nanoparticles UsingDioscorea batatasRhizome Extract and Evaluation of Their Antimicrobial Activities

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
P. C. Nagajyothi ◽  
K. D. Lee
Keyword(s):  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Room Temperature ◽  
Antimicrobial Activities ◽  
Gram Positive ◽  
Gram Negative ◽  
Synthesis Of Nanoparticles ◽  
E Coli ◽  
Synthesize Silver Nanoparticles ◽  
Dioscorea Batatas

The eco-friendly synthesis of nanoparticles through various biological means helps to explore various plants for their ability to synthesize silver nanoparticles (AgNPs). Here we have synthesized AgNPs by using rhizome extract ofDioscorea batatasat as well as room temperature (). AgNPs were characterized under UV-vis spectrophotometer, SEM, FTIR, XRD, and EDX. The antimicrobial activity of AgNPs was evaluated on gram positive (B. substilisandS. aureus), gram negative (E. coli), and fungi (S. cerivisaeandC. albicans). At room temperature,S. cerivisaeandC. albicanswere found to be more susceptible to AgNPs than at .

Fabrication of silver nanoparticles through reduction by ε-caprolactam without using protecting agent

RSC Advances ◽  
2014 ◽  
Vol 4 (54) ◽  
pp. 28765-28768 ◽  
Author(s):  
Jianping Duan ◽  
Dajiang Zhao ◽  
Guisheng Yang
Keyword(s):  
Silver Nanoparticles ◽  
Reducing Agent ◽  
Synthesize Silver Nanoparticles

ε-Caprolactam was used as a multifunctional medium to synthesize silver nanoparticles, in which ε-caprolactam played three key roles including reducing agent, protecting agent and solvent.

scholarly journals Green Synthesis of Silver Nanoparticles and Their Bactericidal and Antimycotic Activities against Oral Microbes

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Osvelia E. Rodríguez-Luis ◽  
Rene Hernandez-Delgadillo ◽  
Rosa Isela Sánchez-Nájera ◽  
Gabriel Alejandro Martínez-Castañón ◽  
Nereyda Niño-Martínez ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Fungal Growth ◽  
Spherical Shape ◽  
Xrd Analysis ◽  
Glycyrrhiza Glabra ◽  
X Ray Diffraction ◽  
Synthesize Silver Nanoparticles ◽  
Oral Biofilms ◽  
Oral Microbes ◽  
Average Size

Nanotechnology is a new discipline with huge applications including medicine and pharmacology industries. Although several methods and reducing agents have been employed to synthesize silver nanoparticles, reactive chemicals promote toxicity and nondesired effects on the human and biological systems. The objective of this work was to synthesize silver nanoparticles fromGlycyrrhiza glabraandAmphipterygium adstringensextracts and determine their bactericidal and antimycotic activities againstEnterococcus faecalisandCandida albicansgrowth, respectively. 1 and 10 mM silver nitrate were mixed with an extract ofGlycyrrhiza glabraandAmphipterygium adstringens.Green silver nanoparticles (AgNPs) were characterized by TEM, Vis-NIR, FTIR, fluorescence, DLS, TGA, and X-ray diffraction (XRD) analysis. Bactericidal and antimycotic activities of AgNPs were determined by Kirby and Bauer method and cell viability MTT assays. AgNPs showed a spherical shape and average size of 9 nm if prepared withGlycyrrhiza glabraextract and 3 nm if prepared withAmphipterygium adstringensextract. AgNPs inhibited the bacterial and fungal growth as was expected, without a significant cytotoxic effect on human epithelial cells. Altogether, these results strongly suggest that AgNPs could be an interesting option to control oral biofilms.

Preparation of silver nanoparticles using aqueous extracts of the red algae Laurencia aldingensis and Laurenciella sp. and their cytotoxic activities

2015 ◽  
Vol 28 (4) ◽  
pp. 2615-2622 ◽  
Author(s):  
Adriana Pires Vieira ◽  
Erika Mattos Stein ◽  
Daniel Xavier Andreguetti ◽  
Pio Colepicolo ◽  
Ana Maria da Costa Ferreira
Keyword(s):  
Silver Nanoparticles ◽  
Red Algae ◽  
Cytotoxic Activities ◽  
Aqueous Extracts

Encapsulation of Silver Nanoparticles in Polylactic Acid or Poly(lactic-co-glycolic acid) and Their Antimicrobial and Cytotoxic Activities

2019 ◽  
Vol 19 (11) ◽  
pp. 6933-6941
Author(s):  
Daissy Julieth Paredes Guerrero ◽  
Jhon Jhamilton Artunduaga Bonilla ◽  
Claudia Cristina Ortiz López ◽  
Rodrigo Gonzalo Torres Sáez
Keyword(s):  
Silver Nanoparticles ◽  
Mammalian Cells ◽  
Metallic Nanoparticles ◽  
Pathogenic Bacteria ◽  
Polymeric Nanoparticles ◽  
Candida Guilliermondii ◽  
Cytotoxic Activities ◽  
Polymeric Nanocomposites ◽  
Murine Fibroblast ◽  
Average Size

Encapsulation with biodegradable polymers is an alternative to reduce adverse effects and improve the physicochemical properties of metallic nanoparticles. In this study, spherical polymeric nanoparticles with an average size of 200 nm loaded with silver nanoparticles (AgNPs) were obtained. The antimicrobial activity against Escherichia coli O157:H7, methicillin-resistant Staphylococcus aureus (MRSA), and yeasts as Candida albicans, Candida parapsilosis and Candida guilliermondii was determined. MIC90 values of nanocomposites were between 0.01 to 1 μg/mL, potentialized effect up to 500 times compared to free AgNPs. In addition, cytotoxic effect on 50% of murine fibroblast (CC50) was obtained at a mean concentration of 9.57 μg/mL of AgNPs (up to ~1000 times higher than MIC90). Consequently, the polymeric nanocomposites loaded with AgNPs are a potential alternative in the development of new biocide agents on Candida species and pathogenic bacteria at non-toxic concentrations for mammalian cells such as murine fibroblasts.

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