A Study of Antimicrobial Property of Oxidized Cotton Fabric Finished with Amino-Terminated Hyperbranched Polymer

2011 ◽  
Vol 175-176 ◽  
pp. 640-645
Author(s):  
Ling Chen ◽  
De Suo Zhang ◽  
Hong Lin ◽  
Yu Yue Chen
Keyword(s):  
Silver Nanoparticles ◽  
Antimicrobial Agent ◽  
Cotton Fabric ◽  
Hyperbranched Polymer ◽  
Molecular Conformation ◽  
Antimicrobial Property ◽  
Nitrate Solution ◽  
Antimicrobial Properties ◽  
Molecular Structures ◽  
Colloid Solution

The chief aim of the present work is to investigate the preparation for silver nanoparticles antimicrobial agent and its antibacterial activity on cotton fabric. In this study, antimicrobial agent was fabricated by a reaction between an amino-terminated hyperbranched polymer (HBP-NH2) and silver nitrate solution of certain concentration. Meanwhile, cotton fabric was oxygenated to afford aldehyde groups which could connect with the amino groups of the HBP-NH2 to provide cotton fabric with durable antimicrobial properties. The effects of different biocides made of various molecular structures of synthetic material (HBP-NH2) on antimicrobial properties of nano-silver colloid solution were discussed, and three different agents generated then were characterized in following aspects as silver nanoparticles size and distribution by using DLS, TEM and UV-vis. Furthermore, the fabric structure, mechanical properties and antimicrobial property of treated cotton fabric were also tested. Included in this part of experiment were transverse micro morphology of cotton fibre by SEM, fabric strength retention after finishing, silver nanoparticles molecular conformation on fabric and content analysis via ICP-AES. The results showed that stable silver nanoparticles collide solution with 20-30 nano, applied on oxidized cotton fabric under certain condition, could produce ideal antibacterial rate over 94% of bacterial reduction to both Staphylococcus aureus (S.aureus) and Escherichia coli (E.coli) after 50 consecutive washings.

Silver Nanoparticles by Amino-Terminated Hyperbranched Polymer : Characterization and Antimicrobial Property on Cotton

2011 ◽  
Vol 332-334 ◽  
pp. 930-934
Author(s):  
Hong Lin ◽  
Ling Chen ◽  
De Suo Zhang ◽  
Yu Yue Chen
Keyword(s):  
Silver Nanoparticles ◽  
Hyperbranched Polymer ◽  
Antimicrobial Agents ◽  
Antimicrobial Property ◽  
Nitrate Solution ◽  
Analytical Techniques ◽  
Silver Nitrate Solution ◽  
The Stability ◽  
Average Size ◽  
And Staphylococcus Aureus

A hyperbranched polymer (HBP-NH2) acting as a reducing agent and stablizer agent has been synthesized to investigate the stability of silver nanoparticles antimicrobial agent, which were prepared in a hyperbranched polymer matrix by a reaction with silver nitrate solution. The antimicrobial agents generated were characterized by different spectroscopic and analytical techniques such as DLS, TEM and UV-vis, which confirm the formation of well-dispersed silver nanoparticles with average size around 12.0 nm. Furthermore, antimicrobial and mechanical properties of nanosilver treated cotton fabrics were investigated. The results showed that stable silver nanoparticles collide solution with 12 nm, applied on cotton fabric under certain condition, could produce ideal antibacterial rate over 94% against both Escherichia coli (E.coli) and Staphylococcus aureus (S.aureus) even after 50 consecutive washings.

Hyperbranched polymer functional cotton fabric for its in situ deposition of silver nanoparticles

2015 ◽  
Vol 54 (6S1) ◽  
pp. 06FH01 ◽  
Author(s):  
Desuo Zhang ◽  
Chenlu Jiao ◽  
Jiaqing Xiong ◽  
Hong Lin ◽  
Yuyue Chen
Keyword(s):  
Silver Nanoparticles ◽  
Cotton Fabric ◽  
Hyperbranched Polymer ◽  
In Situ Deposition

scholarly journals Coconut inflorescence sap mediated synthesis of silver nanoparticles and its diverse antimicrobial properties

2019 ◽  
Author(s):  
M.K. Rajesh ◽  
K.S. Muralikrishna ◽  
Swapna S. Nair ◽  
B. Krishna Kumar ◽  
T.M. Subrahmanya ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Silver Nanoparticles ◽  
Secondary Metabolites ◽  
Hela Cells ◽  
Pathogenic Bacteria ◽  
Incubation Temperature ◽  
Antimicrobial Property ◽  
Antimicrobial Properties ◽  
Biological Origin ◽  
Synthesis Of Nanoparticles

ABSTRACTGreen synthesis of nanoparticles (NPs) involves the use of diverse extracts of biological origin as substrates to synthesize nanoparticles and can overcome the hazards associated with chemical methods. Coconut inflorescence sap, which is unfermented phloem sap obtained by tapping of coconut inflorescence, is a rich source of sugars and secondary metabolites. In this study, coconut inflorescence sap was used to synthesize silver nanoparticles (AgNPs). We have initially undertaken metabolomic profiling of coconut inflorescence sap from West Coast Tall cultivar to delineate its individual components. Secondary metabolites constituted the major portion of the inflorescence sap along with sugars, lipids and, peptides. The concentration of silver nitrate, inflorescence sap and incubation temperature for synthesis of AgNPs were optimized. Incubating the reaction mixture at 40°C was found to enhance AgNP synthesis. The AgNPs synthesized were characterized using UV-Visible spectrophotometry, X-Ray Diffraction (XRD), Fourier Transform Infrared spectroscopy (FTIR), Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscopy (TEM). Antimicrobial property of AgNP was tested in tissue culture of arecanut (Areca catechu L.) where bacterial contamination (Bacillus pumilus) was a frequent occurrence. Significant reduction in the contamination was observed when plantlets were treated with aqueous solutions of 0.01, 0.02 and 0.03% of AgNPs for one hour. Notably, treatment with AgNPs did not affect growth and development of the arecanut plantlets. Cytotoxicity of AgNPs was quantified in HeLa cells. Viability (%) of HeLa cells declined significantly at 10 ppm concentration of AgNP and complete mortality was observed at 60 ppm. Antimicrobial properties of AgNPs synthesized from inflorescence sap were also evaluated and confirmed in human pathogenic bacteria viz., Salmonella sp., Vibrio parahaemolyticus, and Escherichia coli. The study concludes that unfermented inflorescence sap, with above neutral pH, serves as an excellent reducing agent to synthesize AgNPs from Ag+. Graphical abstract

Chemical and Physical Analyses of Synthesized Silver Nanoparticles

2013 ◽  
Vol 9 ◽  
Author(s):  
Kavya Sharman
Keyword(s):  
Silver Nanoparticles ◽  
Antimicrobial Property ◽  
Antimicrobial Properties ◽  
Physical Analysis ◽  
Significance Level ◽  
Bacterial Inhibition ◽  
Physical Chemical ◽  
Elemental Silver ◽  
Visual Color ◽  
The Relationship

Although silver has long been used as an antimicrobial agent, it is not used often due to economical and environmental concerns. However, silver nanoparticles (AgNPs) have the same properties as elemental silver and can be synthesized on a considerably more economical level. The objective of this study was to synthesize AgNPs and analyze their physical, chemical, and antimicrobial properties. The first portion of this study consisted of synthesizing AgNPs of 5nm, 35nm, 40nm, and 60nm lengths, using diluted lab solutions and sterile techniques. The physical analysis of the AgNPs was performed through visual color comparisons of their varied sizes, which confirmed their successful synthesis. A chemical analysis was then conducted using ultraviolet-visible spectroscopy, which measured their absorbance at a 635nm wavelength. Finally, the antimicrobial property of the AgNPs was investigated by inoculating a strain of Staphylococcus aureus with titrated concentrations of varied nanoparticle size. This titration allowed for the analysis of the relationship between the size of AgNPs and level of inhibition of S. aureus. The results of the bacterial inhibition were quantified using a colorimeter, which determined the density of the bacteria and the consequent level of inhibition. The results were analyzed using an ANOVA test, which determined that at a 95% significance level, AgNPs were successfully able to inhibit the growth of S. aureus. However, the results of an ensuing series of t-tests indicated that there was not a consistent relationship between the size of the nanoparticles and the level of bacterial inhibition.

scholarly journals Journey of Limonene as an Antimicrobial Agent

2021 ◽  
Author(s):  
Akshi Gupta ◽  
Ebenezer Jeyakumar ◽  
Rubina Lawrence
Keyword(s):  
Antimicrobial Agent ◽  
Antimicrobial Agents ◽  
Antimicrobial Property ◽  
Petroleum Industry ◽  
Antimicrobial Properties ◽  
Research Groups ◽  
The Past ◽  
Naturally Occurring ◽  
Pathogenic Microbes ◽  
Nonalcoholic Beverages

Injudicious consumption of antibiotics in the past few decades has arisen the problem of resistance in pathogenic organisms against most antibiotics and antimicrobial agents. Scenarios of treatment failure are becoming more common in hospitals. This situation demands the frequent need for new antimicrobial compounds which may have other mechanisms of action from those which are in current use. Limonene can be utilized as one of the solutions to the problem of antimicrobial resistance. Limonene is a naturally occurring monoterpene with a lemon-like odor, which mainly present in the peels of citrus plants like lemon, orange, grapefruit, etc. The study aimed to enlighten the antimicrobial properties of limonene as per previous literature. Advantageous contributions have been made by various research groups in the study of the antimicrobial properties of limonene. Previous studies have shown that limonene not only inhibits disease-causing pathogenic microbes, however, it also protects various food products from potential contaminants. This review article contains information about the effectiveness of limonene as an antimicrobial agent. Apart from antimicrobial property, some other uses of limonene are also discussed such as its role as fragrance and flavor additive, as in the formation of nonalcoholic beverages, as solvent and cleaner in the petroleum industry, and as a pesticide. Antibacterial, antifungal, antiviral, and anti-biofilm properties of limonene may help it to be used in the future as a potential antimicrobial agent with minimal adverse effects. Some of the recent studies also showed the action of limonene against COVID-19 (Coronavirus). However, additional studies are requisite to scrutinize the possible mechanism of antimicrobial action of limonene.

scholarly journals Applications Of Silver Nanoparticles In Dentistry

2020 ◽  
Vol 11 (SPL3) ◽  
pp. 1126-1131
Author(s):  
Anu Iswarya Jaisankar ◽  
Rajeshkumar S ◽  
Ezhilarasan D
Keyword(s):  
Silver Nanoparticles ◽  
Building Materials ◽  
Antimicrobial Property ◽  
Antimicrobial Properties ◽  
Chemical Properties ◽  
Research And Innovation ◽  
Acrylic Resins ◽  
Dental Acrylic ◽  
Mechanical Devices ◽  
Implant Coatings

Nanotechnology is a booming field of research and innovation that aims at building materials on the scale of atoms and molecules. Essentially Nanotechnology is characterized as the plan, characterisation, creation and utilization of structures, gadgets and frameworks by controlled control of size and shape at the nanometer scale. It is a booming field of this 21st century. Silver Nanoparticles are known for their various physical, chemical and quantum properties that make them unique. They have got excellent antimicrobial properties that extend their applications nearly in every sphere of life. Apart from the antimicrobial property, they show excellence in their Anti-inflammatory and Anti-oxidation properties. Silver nanoparticles also have many optical, mechanical, biological and chemical properties that attribute to their enhanced performances in the evaluation and clinical assessments of mechanical devices and other biomaterials. Uses of Silver Nanoparticles in the field of dentistry is remarkable. Silver nanoparticles can be used in association with dental acrylic resins, intracanal medication and in implant coatings. The current study aims at discussing the applications of silver nanoparticles in various aspects of dentistry.

scholarly journals A fast and simple protocol for synthesizing effective antimicrobial silver nanoparticles in non-specialized facilities

2019 ◽  
Author(s):  
Roberto Vazquez-Munoz ◽  
M. Josefina Arellano-Jimenez ◽  
Jose L. Lopez-Ribot
Keyword(s):  
Silver Nanoparticles ◽  
Metallic Nanoparticles ◽  
Chemical Reduction ◽  
Nitrate Solution ◽  
Synthesis Method ◽  
Antimicrobial Properties ◽  
Reduction Process ◽  
Cost Effective ◽  
Silver Nitrate Solution ◽  
Average Size

Abstract Objective Silver nanoparticles (AgNPs) can be difficult or expensive to obtain or synthesize for laboratories in resource-limited facilities. The purpose of this work was to create a fast, facile, and cost-effective method for synthesizing AgNPs with potent antimicrobial properties, that can be readily implemented in non-specialized laboratories.Results Our developed method uses a rather simple and rapid chemical reduction process that involves the addition of a polyvinylpyrrolidone solution to a warmed silver nitrate solution under constant vigorous stirring, immediately followed by the addition of sodium borohydride with constant stirring for an additional 15 minutes. AgNPs had an aspect ratio close to 1, with an average size of 6.18 ± 5 nm. AgNPs displayed potent antimicrobial activity, with Minimal Inhibitory Concentration values of 3 µg mL-1 and 1.5 µg mL-1 for Staphylococcus aureus and Candida albicans respectively.Keywords : Silver nanoparticles, nanoantibiotics, synthesis method, AgNPs, metallic nanoparticles

Efficacy of Silver Nanoparticles Synthesized from Hymenocallis species (Spider Lilly) Leaf Extract as Antimicrobial Agents

2019 ◽  
Vol 12 (5) ◽  
pp. 4644-4647
Author(s):  
K.K. Gupta ◽  
Neha Kumari ◽  
Neha Sinha ◽  
Akruti Gupta
Keyword(s):  
Silver Nanoparticles ◽  
Leaf Extract ◽  
Antimicrobial Agents ◽  
Color Change ◽  
Bacterial Species ◽  
Antimicrobial Property ◽  
Biogenic Synthesis ◽  
E Coli ◽  
Light Yellow ◽  
Antibiotic Property

Biogenic synthesis of silver nanoparticles synthesized from Hymenocallis species (Spider Lilly) leaf extract was subjected for investigation of its antimicrobial property against four bacterial species (E. coli, Salmonella sp., Streptococcus sp. & Staphylococcus sp.). The results revealed that synthesized nanoparticles solution very much justify the color change property from initial light yellow to final reddish brown during the synthesis producing a characteristics absorption peak in the range of 434-466 nm. As antimicrobial agents, their efficacy was evaluated by analysis of variance in between the species and among the different concentration of AgNPs solution, which clearly showed that there was significant variation in the antibiotic property between the four different concentrations of AgNPs solution and also among four different species of bacteria taken under studies. However, silver nanoparticles solution of 1: 9 and 1:4 were proved comparatively more efficient as antimicrobial agents against four species of bacteria.

Sign in / Sign up

Export Citation Format

Share Document