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.

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%.

Fluorescent lactose-derived catanionic aggregates: synthesis, characterisation and potential use as antibacterial agents

RSC Advances ◽  
2016 ◽  
Vol 6 (28) ◽  
pp. 23340-23344
Author(s):  
Alexandre Bettoschi ◽  
Alain Brisson ◽  
Claudia Caltagirone ◽  
Angela M. Falchi ◽  
Francesco Isaia ◽  
...  
Keyword(s):  
Antibacterial Agents ◽  
Low Cost ◽  
Antibacterial Properties ◽  
Drug Resistant ◽  
Gram Positive ◽  
Organic Salts ◽  
Gram Positive Bacteria ◽  
Catanionic Surfactants ◽  
Potential Use

The antibacterial properties of catanionic surfactants based on fluorescent lactose-derivative organic salts using low-cost starting materials were investigated towards multi-drug-resistant Gram-positive bacteria.

scholarly journals Design parameter estimations for adjustable bubble size in bubble generating system

2017 ◽  
Vol 77 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Tschung-il Kim ◽  
Hyunju Park ◽  
Mooyoung Han
Keyword(s):  
Water Treatment ◽  
Bubble Size ◽  
Treatment Process ◽  
Low Cost ◽  
Partition Wall ◽  
Parameter Estimations ◽  
Water Treatment Process ◽  
Mixing Chamber ◽  
Partition Walls ◽  
Exact Size

Abstract In this study, we developed a customized low cost and low energy bubble generator that can control bubble size. Hence, it can be used not only in the water treatment process but also in various other processes. This device was able to generate bubbles with a very simple system using only a general pump and a mixing chamber. Increasing the number of partition walls in the mixing chamber reduced the bubble size. Furthermore, bubbles of a few hundred nanometers were produced by the shear stress caused by increasing the thickness of the partition wall. Although the generated sub-micron bubbles were too small for their exact size to be measured using an image analysis and particle counting method, it was possible to confirm their existence indirectly through the coalescence arising from ultrasonic irradiation. The device used in this research is simple and allows bubble size to be adjusted easily by controlling the design of the mixing chamber. Therefore, it can be applied to a water treatment process, as well as a variety of other processes.

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.

PRELIMINARY EVALUATION OF THE ENVIRONMENTAL IMPACT OF WATER TREATMENT PROCESS

2016 ◽  
Vol 15 (8) ◽  
pp. 1867-1872
Author(s):  
Florina Fabian ◽  
Silvia Fiore ◽  
Giuseppe Genon ◽  
Deborah Panepinto ◽  
Valentin Nedeff ◽  
...  
Keyword(s):  
Water Treatment ◽  
Environmental Impact ◽  
Treatment Process ◽  
Preliminary Evaluation ◽  
Water Treatment Process

Fluoroquinolone-3-carboxamide Amino Acid Conjugates: Synthesis, Antibacterial Properties And Molecular Modeling Studies

2020 ◽  
Vol 17 (1) ◽  
pp. 71-84
Author(s):  
Riham M. Bokhtia ◽  
Siva S. Panda ◽  
Adel S. Girgis ◽  
Hitesh H. Honkanadavar ◽  
Tarek S. Ibrahim ◽  
...  
Keyword(s):  
Experimental Data ◽  
Antibacterial Activity ◽  
Amino Acid ◽  
Bacterial Infections ◽  
Antibacterial Agents ◽  
Antibacterial Properties ◽  
Computational Studies ◽  
Protecting Group ◽  
Amino Acid Conjugates ◽  
Molecular Modeling Studies

Background: Bacterial infections are considered as one of the major global health threats, so it is very essential to design and develop new antibacterial agents to overcome the drawbacks of existing antibacterial agents. Method: The aim of this work is to synthesize a series of new fluoroquinolone-3-carboxamide amino acid conjugates by molecular hybridization. We utilized benzotriazole chemistry to synthesize the desired hybrid conjugates. Result: All the conjugates were synthesized in good yields, characterized, evaluated for their antibacterial activity. The compounds were screened for their antibacterial activity using methods adapted from the Clinical and Laboratory Standards Institute. Synthesized conjugates were tested for activity against medically relevant pathogens; Escherichia coli (ATCC 25922), Pseudomonas aeruginosa (ATCC 27856) Staphylococcus aureus (ATCC 25923) and Enterococcus faecalis (ATCC 19433). Conclusion: The observed antibacterial experimental data indicates the selectivity of our synthesized conjugates against E.Coli. The protecting group on amino acids decreases the antibacterial activity. The synthesized conjugates are non-toxic to the normal cell lines. The experimental data were supported by computational studies.

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