Study on the Antibacterial Performance of the Antibacterial Shutter Blades

2013 ◽  
Vol 815 ◽  
pp. 333-338
Author(s):  
Ming Li Liu ◽  
Chun Feng Li ◽  
Yun Long Wang ◽  
Kai Lu ◽  
Jiu Yin Pang ◽  
...  
Keyword(s):  
Antibacterial Agent ◽  
Antibacterial Agents ◽  
Drug Loading ◽  
Antibacterial Properties ◽  
Water Soluble ◽  
Single Factor ◽  
Antibacterial Performance ◽  
Loading Amount ◽  
Single Factor Experiment ◽  
Impregnation Solution

This study used Ag-embedded nanoTiO2, xylan and water-soluble Chitosan as antibacterial agents, respectively prepared shutter blades through the treating solution of the different concentration and the different drug loading amount of the poplar veneer. Through a single factor experiment, this paper analyzes that the different antibacterial agent, concentration of antibacterial agent and the drug loading amount have an effect on the antibacterial properties of the shutter blades. The results show that the order of antibacterial performance of the shutter blades impregnated antibacterial agents is the Ag-embedded nanoTiO2, Chitosan, Xylan. Comprehensiv-ely thought the antibacterial properties and economic index, the optimal concentration of the Ag-embedded nanoTiO2 impregnation solution is 1%.

Macrophage escape by cholesterol-polyoxyethylene sorbitol oleate micelles for pulmonary delivery

Nanomedicine ◽  
2020 ◽  
Vol 15 (5) ◽  
pp. 489-509
Author(s):  
Dong Shen ◽  
Yan Shen ◽  
Qian Chen ◽  
Bin Huang ◽  
Yedong Mi ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Cellular Uptake ◽  
Encapsulation Efficiency ◽  
Drug Loading ◽  
Ultrasonic Method ◽  
Pulmonary Delivery ◽  
Single Factor ◽  
Box Behnken Design ◽  
Single Factor Experiment

Aim: Micelles are one of the most promising nanoplatforms for drug delivery, and here, cholesterol-conjugated polyoxyethylene sorbitol oleate (CPSO) micelles have been fabricated for the pulmonary delivery of paclitaxel (PTX). Materials & methods: PTX-CPSO micelles were prepared by a dialysis-ultrasonic method, and a single-factor experiment with a Box–Behnken design was conducted to optimize the formulation. Furthermore, intracellular and phagocytosis escape studies of the optimized formulation were performed on A549 and NR8383 cells. Results: The optimal micelles exhibited satisfactory encapsulation efficiency (78.48 ± 2.36%) and drug loading (17.06 ± 1.71%). In vitro studies showed enhanced CPSO micelle A549 cellular uptake and their ability to escape macrophages. Conclusion: PTX-CPSO micelles could be a promising system for pulmonary targeting by intravenous administration.

A New Antibacterial Agent: Propolis

2018 ◽  
Vol 1 (1) ◽  
pp. 15
Author(s):  
Özge İn şaatçi ◽  
Necla Yaman Turan
Keyword(s):  
Antibacterial Agent ◽  
Antibacterial Agents ◽  
Daily Life ◽  
Antibacterial Properties ◽  
The Other ◽  
Textile Materials ◽  
Other Hand ◽  
Textile Products

<p class="pre" align="justify">As textile products are being used widely in Daily life, their antibacterial characteristics gain more importance. The necessity of antibacterial agents used due to the importance given to today's health and alternative products provided by natural routes has also revealed the necessity of this context. This work focuses on the usage of propolis as an antibacterial agent. On the other hand, it aims to gather information on the use of propolis for the purpose of giving antibacterial properties to textile materials. </p>

scholarly journals The Antibacterial Properties and Safety of a Nanoparticle-Coated Parquet Floor

Coatings ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 403 ◽  
Author(s):  
Chong Jia ◽  
Yang Zhang ◽  
Juqing Cui ◽  
Lu Gan
Keyword(s):  
Antibacterial Agent ◽  
Antibacterial Properties ◽  
Melamine Resin ◽  
Bacterial Diseases ◽  
Floor Surface ◽  
Resin Solution ◽  
Loading Amount ◽  
Antibacterial Nanoparticles ◽  
Almost All ◽  
The Impact

Floor antibacterial technology prevents the human body from cross-infection with bacterial diseases. The most commonly used approach to endow daily-used floors with antibacterial properties is to apply a thin film of antibacterial agents on the parquet floor surface. In the present study, five commercial antibacterial nanoparticles were first dispersed in melamine resin solution, and then applied on a floor. Afterwards, the antibacterial properties of the nanoparticle-coated floor were investigated, in which Escherichia coli was used as the target bacteria. The impact of the nanoparticle dispersing agents on the ultimate antibacterial properties of the floor were also investigated. The results showed that silver nanoparticle-loaded hydroxyl zirconium sodium phosphate (Ag-HZDP) was most suitable as the antibacterial agent of a melamine coating for parquet flooring. With the help of sodium hexametaphosphate, the antibacterial agent was able to disperse well in the melamine resin solution and was also able to disperse well on the floor surface. When the loading amount of Ag-HZDP was 1 wt % or higher, the prepared antibacterial floor was able kill almost all the bacteria cultivated on its surface. Moreover, the prepared antibacterial floor had a lower toxicity compared with a pristine cedar substrate. The present study provides an effective way to provide daily-used parquet floors with excellent antibacterial properties.

scholarly journals Photosynthesis of Carboxymethyl Starch-Stabilized Silver Nanoparticles and Utilization to Impart Antibacterial Finishing for Wool and Acrylic Fabrics

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
M. A. El-Sheikh ◽  
L. K. El Gabry ◽  
H. M. Ibrahim
Keyword(s):  
Silver Nanoparticles ◽  
Bacterial Growth ◽  
Irradiation Time ◽  
Synthesis Method ◽  
Antibacterial Properties ◽  
Spherical Shape ◽  
Inhibition Zone ◽  
Water Soluble ◽  
Carboxymethyl Starch ◽  
Antibacterial Performance

The water soluble photoinitiator (PI) 4-(trimethyl ammonium methyl) benzophenone chloride/UV system is used in the synthesis of silver nanoparticles (AgNPs). Green synthesis method involved using PI/UV system, carboxymethyl starch (CMS), silver nitrate, and water. AgNPs obtained had a spherical shape morphology and a size of 1–7 nm. To impart antibacterial properties, wool and acrylic fabrics were treated with AgNPs obtained. The PI/UV system was further utilized to fix AgNPs onto wool and acrylic fabrics by photocrosslinking to impart durable antibacterial properties. The effect of irradiation time on the antibacterial performance before and after repeated washing cycles was studied. S. aureus (as G +ve) and E. coli (as G −ve) were used to estimate the antibacterial performance of the finished fabrics. The antibacterial performance was directly proportional to the irradiation time but inversely proportional to the number of washing cycles. However, after the 15th washing cycle, samples still have bacteriostatic effect; that is, although they show zero inhibition zone, they cannot be attacked by the bacterial growth and do not inhibit the bacterial growth. AgNPs finished wool fabrics showed more antibacterial activity than those of AgNPs finished acrylic fabrics.

Preparation and Characterization of Antibacterial Nylon 6 Fiber

2017 ◽  
Vol 898 ◽  
pp. 2254-2262 ◽  
Author(s):  
Lian Tang ◽  
Dan Yue Wang ◽  
Qiu Shu Xu ◽  
Chao Sheng Wang ◽  
Hua Ping Wang ◽  
...  
Keyword(s):  
Antibacterial Agent ◽  
Melt Spinning ◽  
Fiber Strength ◽  
Sol Gel ◽  
Antibacterial Properties ◽  
Nylon 6 ◽  
Diffusion Method ◽  
Drawing Ratio ◽  
Scanning Calorimetry ◽  
Antibacterial Performance

Due to its excellent mechanical property, dye ability and skin affinity, PA6 has been widely used in apparel, home textiles, military products, etc. However, PA6 fiber is easy to breed bacteria and corroded by bacteria in humid environment. One of development tendency of functional PA6 fiber is to design and develop nylon 6 fiber with excellent antibacterial properties, which is also the research target of this paper. In the present investigation, ZnO antibacterial agent was prepared through sol-gel method, and antibacterial masterbatch was acquired via blending antibacterial agent with PA6 using a twin-screw, then antibacterial PA6 fiber was obtained through melt spinning. The thermal properties, crystallization property of antibacterial PA6 masterbatch were discussed. The effect of drawing ratio on fiber strength, elongation of break, orientation and crystallization was also investigated. The antibacterial properties of antibacterial agent and antibacterial PA6 fiber was analyzed by agar diffusion method. The results of Differential Scanning Calorimetry (DSC) suggests that the antibacterial agent causes the rise of crystallization temperature and crystallization rate. X-Ray Diffraction (XRD) and mechanical testing results reveal that the higher drawing ratio leads to higher orientation and strength of PA6 fiber, lower elongation at break. The addition of antibacterial agent increases the degree of orientation and crystallization, reduces the strength of fiber and tends to form α crystalline in PA6 fiber. Antibacterial tests show that antibacterial PA6 fiber has a good antibacterial performance against Staphylococcus aureus.

Coaxial electrospinning preparation and antibacterial property of polylactic acid/tea polyphenol nanofiber membrane

2022 ◽  
pp. 152808372110542
Author(s):  
Jie Wu ◽  
Shuqiang Liu ◽  
Man Zhang ◽  
Gaihong Wu ◽  
Haidan Yu ◽  
...  
Keyword(s):  
Polylactic Acid ◽  
Release Rate ◽  
Antibacterial Agent ◽  
Mechanical Performance ◽  
Antibacterial Properties ◽  
Coaxial Electrospinning ◽  
Tea Polyphenol ◽  
Zone Method ◽  
Antibacterial Performance ◽  
Nanofiber Membranes

The polylactic acid (PLA)/tea polyphenol (TP) nanofiber membranes were prepared by coaxial electrospinning. The physical properties, antibacterial agent release, degradation, and antibacterial properties were investigated. Results demonstrated that stepwise and controlled antibacterial agent release profiles were achieved based on the core-shell configuration and disparate degradation rate of PLA and TP. The mechanical performance decreased with the increase of the TP content in the shell layer. The cumulative antibacterial agent release rate of nanofiber membranes with different TP content was different, while the antibacterial agent release trend was the same. The antibacterial agent release rate of the sample was the fastest at the initial stage from 2 h to 8 h, and then gradually slowed down after 24 h. In addition, the antibacterial activity of the PLA/TP nanofiber membranes was confirmed by the inhibition zone method against both Gram-positive ( Staphylococcus aureus) and Gram-negative ( Escherichia coli). Results showed that the antibacterial performance of PLA/TP nanofiber was intensified with the increasing content of TP, especially had better antibacterial performance against S. aureus.

scholarly journals Copper/Graphene Based Materials Nanocomposites and Their Antibacterial Study: A Mini Review

2021 ◽  
Vol 1 (1) ◽  
pp. 44-52
Author(s):  
Nur ‘Afini Ismail ◽  
Kamyar Shameli ◽  
Roshafima Rasit Ali ◽  
Siti Nur Amalina Mohamad Sukri ◽  
Eleen Dayana Mohamed Isa
Keyword(s):  
Gold Nanoparticles ◽  
Biological Activity ◽  
Antibacterial Agents ◽  
Treatment Process ◽  
Low Cost ◽  
Antibacterial Properties ◽  
Biocidal Activity ◽  
Antibacterial Study ◽  
Water Treatment Process ◽  
Antibacterial Performance

Due to their biocidal activity properties, graphene based materials have been widely studied especially in biomedical, agriculture and water treatment process which focus on mitigating the microbial resistance problem. However, the antibacterial performance of these materials alone are relatively weak and need to be improved in order to enhance their biological activity. Copper nanoparticles is a low cost metal also has the antibacterial properties which is almost similar with the silver and gold nanoparticles. The combination of these two materials had produced to a new potential material as another alternative for the antibacterial agents. Therefore, in this work, a brief review of copper/graphene based material nanocomposites and their antibacterial study was discussed.

Effects of Different Factors on Antibacterial Properties of Crosslinked Chitosan-Coated Ag-Loading Nano-SiO2 Composites

2012 ◽  
Vol 535-537 ◽  
pp. 51-54
Author(s):  
Li Zhang ◽  
Mei Niu ◽  
Jin Ming Dai ◽  
Li Qiao Wei ◽  
Xu Guang Liu ◽  
...  
Keyword(s):  
Antibacterial Agents ◽  
Inhibitory Concentration ◽  
Heating Temperature ◽  
Antibacterial Properties ◽  
Crosslinking Reaction ◽  
Mass Ratio ◽  
Nano Sio2 ◽  
Antibacterial Performance ◽  
Crosslinked Chitosan ◽  
Weak Influence

Chitosan (CTS) and Ag-loading nano-SiO2 (SLS) are excellent antibacterial materials. However, when used alone, these monocomponent antibacterial agents are sometimes far from meeting requirements in special conditions. In this study, crosslinked chitosan-coated Ag-loading nano-SiO2 composites (CCTS-SLS) were synthesized by adsorption crosslinking reaction. Then Escherichia coil (ATCC 8099) was taken as the experimental bacteria for antibacterial tests. The experimental results indicate that the mass ratio of SLS to chitosan had the greatest influences on the value of MIC (minimal inhibitory concentration) for CCTS-SLS composite. However, the heating temperature had a weak influence on the antibacterial performance of CCTS-SLS composite.

scholarly journals Preparation of Silver Antibacterial Agents with Different Forms and Their Effects on the Properties of Water-Based Primer on Tilia europaea Surface

Coatings ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1066
Author(s):  
Xiaoxing Yan ◽  
Pan Pan
Keyword(s):  
Antibacterial Agent ◽  
Antibacterial Agents ◽  
Chemical Reduction ◽  
Urea Formaldehyde ◽  
Antibacterial Properties ◽  
Formaldehyde Resin ◽  
Nano Silver ◽  
Silver Solution ◽  
Antibacterial Coatings ◽  
Water Based

Micron silver particles prepared by the chemical reduction method, urea formaldehyde resin-coated nano-silver solution microcapsules, and nano-silver solution were used as three kinds of antibacterial agents. These were added to a water-based primer on the surface of Tilia europaea in contents of 1.0%, 4.0%, 7.0%, 10.0%, 13.0%, and 16.0%. In order to achieve the best comprehensive performance of the water-based primer, the mechanical, optical, and antibacterial properties of the three antibacterial coatings with different contents of silver antibacterial agents were explored. It was concluded that when the antibacterial agent content was 4.0%, the color difference, impact resistance, adhesion, and gloss of water-based primer on the Tilia europaea surface were better. When the antibacterial agent content added was 16.0%, the antibacterial properties of the three groups of coatings improved to 94.89%, 81.75%, and 83.98%, respectively. The results provide a research idea for the preparation of antibacterial coatings on the surface of wood furniture.

Mesoporous Silica Molecular Sieve based Nanocarriers: Transpiring Drug Dissolution Research

2017 ◽  
Vol 23 (3) ◽  
pp. 467-480 ◽  
Author(s):  
Satyanarayan Pattnaik ◽  
Kamla Pathak
Keyword(s):  
Drug Release ◽  
Mesoporous Silica ◽  
Molecular Sieves ◽  
Release Kinetics ◽  
Drug Loading ◽  
Scale Up ◽  
Water Soluble ◽  
Drug Dissolution ◽  
Water Soluble Drugs ◽  
Loading Methods

Background: Improvement of oral bioavailability through enhancement of dissolution for poorly soluble drugs has been a very promising approach. Recently, mesoporous silica based molecular sieves have demonstrated excellent properties to enhance the dissolution velocity of poorly water-soluble drugs. Description: Current research in this area is focused on investigating the factors influencing the drug release from these carriers, the kinetics of drug release and manufacturing approaches to scale-up production for commercial manufacture. Conclusion: This comprehensive review provides an overview of different methods adopted for synthesis of mesoporous materials, influence of processing factors on properties of these materials and drug loading methods. The drug release kinetics from mesoporous silica systems, the manufacturability and stability of these formulations are reviewed. Finally, the safety and biocompatibility issues related to these silica based materials are discussed.

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