Nanotechnologies � Evaluation of the antimicrobial performance of textiles containing manufactured nanomaterials

2021 ◽  
Keyword(s):  
Manufactured Nanomaterials ◽  
Antimicrobial Performance

Hydrothermal preparation of TiO2-Ag nanoparticles and its antimicrobial performance against human pathogenic microbial cells in water

BIOCELL ◽  
2018 ◽  
Vol 42 (3) ◽  
pp. 93-97 ◽  
Author(s):  
Mahmoud MOUSTAFA ◽  
Saad ALAMRI ◽  
Mohamed ELNOUBY ◽  
Tarek TAHA ◽  
M. A. ABU-SAIED ◽  
...  
Keyword(s):  
Ag Nanoparticles ◽  
Hydrothermal Preparation ◽  
Microbial Cells ◽  
Antimicrobial Performance

Research progress on toxicity of manufactured nanomaterials to aquatic organisms

2013 ◽  
Vol 20 (4) ◽  
pp. 902-909
Author(s):  
Lin YANG ◽  
Hengyi XU ◽  
Meng YANG ◽  
Yonghua XIONG ◽  
Xiaolin HUANG
Keyword(s):  
Aquatic Organisms ◽  
Research Progress ◽  
Manufactured Nanomaterials

scholarly journals Study of the Performance of Particles Based on Modified Starches Containing Potassium Sorbate and Incorporated into Biodegradable Films: Physicochemical Characterization and Antimicrobial Action

Chemistry ◽  
2021 ◽  
Vol 3 (2) ◽  
pp. 658-671
Author(s):  
Paola Alzate ◽  
Lía Gerschenson ◽  
Silvia Flores
Keyword(s):  
Control Systems ◽  
Physicochemical Characterization ◽  
Potassium Sorbate ◽  
Biodegradable Films ◽  
Ultrasound Technique ◽  
Yellowness Index ◽  
Solubility In Water ◽  
Zygosaccharomyces Bailii ◽  
Modified Starches ◽  
Antimicrobial Performance

Ultrasound technique was used to produce native and acetylated cassava starch particles containing potassium sorbate (KS). In order to obtain an active packaging, films with addition of native starch particles containing KS (NKSPF) or added with acetylated starch particles containing KS (AKSPF) were formulated. As control systems, films without KS (CF) or added with KS that was not retained in particles (KSF), were produced. The NKSPF and AKSPF microstructure was consistent with composite materials. Tensile test revealed that CF and KSF were ductile and extensible (stress at break (σb) 2.8–2.5 MPa and strain at break (εb) 284–206%), while NKSPF and AKSPF were more resistant films with higher Young’s Modulus (148–477 MPa) and σb (3.6–17 MPa) but lower εb (40–11%). Moreover, NKSPF and AKSPF developed lower Yellowness Index (6.6–6.5) but higher opacity (19–23%) and solubility in water (31–35%) than KSF (9, 10.8% and 9%, respectively). It was observed that KSF and NKSPF moderately reduced the Zygosaccharomyces bailii growth while AKSPF showed the highest yeast inhibition, three Log-cycles, compared to CF. Additionally, FTIR spectroscopy revealed intensified interactions between KS and modified starch. It was concluded that starch sonication and acetylation were useful modifications to produce particles carrier of KS that improved the physical and antimicrobial performance of active films.

scholarly journals A Versatile Method for Preparing Polysaccharide Conjugates via Thiol-Michael Addition

Polymers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1905
Author(s):  
Junyi Chen ◽  
Xutao Ma ◽  
Kevin J. Edgar
Keyword(s):  
Michael Addition ◽  
Quaternary Ammonium ◽  
Synthetic Approach ◽  
Renewable Materials ◽  
Fast Reaction ◽  
Michael Additions ◽  
Antimicrobial Performance ◽  
A Charge ◽  
Post Modification ◽  
Fast Reaction Rate

Polysaccharide conjugates are important renewable materials. If properly designed, they may for example be able to carry drugs, be proactive (e.g., with amino acid substituents) and can carry a charge. These aspects can be particularly useful for biomedical applications. Herein, we report a simple approach to preparing polysaccharide conjugates. Thiol-Michael additions can be mild, modular, and efficient, making them useful tools for post-modification and the tailoring of polysaccharide architecture. In this study, hydroxypropyl cellulose (HPC) and dextran (Dex) were modified by methacrylation. The resulting polysaccharide, bearing α,β-unsaturated esters with tunable DS (methacrylate), was reacted with various thiols, including 2-thioethylamine, cysteine, and thiol functional quaternary ammonium salt through thiol-Michael addition, affording functionalized conjugates. This click-like synthetic approach provided several advantages including a fast reaction rate, high conversion, and the use of water as a solvent. Among these polysaccharide conjugates, the ones bearing quaternary ammonium salts exhibited competitive antimicrobial performance, as supported by a minimum inhibitory concentration (MIC) study and tracked by SEM characterization. Overall, this methodology provides a versatile route to polysaccharide conjugates with diverse functionalities, enabling applications such as antimicrobial activity, gene or drug delivery, and biomimicry.

scholarly journals Antimicrobial Performance of Thermoplastic Elastomers Containing Zinc Pyrithione and Silver Nanoparticles

2017 ◽  
Vol 20 (5) ◽  
pp. 1266-1273 ◽  
Author(s):  
Michele Pittol ◽  
Daiane Tomacheski ◽  
Douglas Naue Simões ◽  
Vanda Ferreira Ribeiro ◽  
Ruth Marlene Campomanes Santana
Keyword(s):  
Silver Nanoparticles ◽  
Thermoplastic Elastomers ◽  
Zinc Pyrithione ◽  
Antimicrobial Performance

Excellent photocatalytic degradation and disinfection performance of a novel bifunctional Ag@AgSCN nanostructure with exposed {−112} facets

2018 ◽  
Vol 42 (14) ◽  
pp. 11811-11818 ◽  
Author(s):  
Xinfu Zhao ◽  
Xibin Yi ◽  
Shuo Tian ◽  
Jian Zhang
Keyword(s):  
Photocatalytic Degradation ◽  
Precipitation Method ◽  
Antimicrobial Performance

A novel bifunctional Ag@AgSCN nanostructure with excellent photocatalytic degradation and antimicrobial performance has been successfully prepared by a simple precipitation method.

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