A comparative study: Physical, mechanical and antibacterial properties of bio-composite gelatin films as influenced by chitosan and zinc oxide nanoparticles incorporation

2021 ◽  
pp. 101250
Author(s):  
Azyan Afiqah Ahmad ◽  
Norizah Mhd Sarbon
2021 ◽  
Author(s):  
Fereshteh Shahbazi ◽  
Reza Ahmadi ◽  
Mohammad Noghani ◽  
Gholamreza Karimi

Abstract With the increase in diseases caused by bacterial and viral infections, the need for antibiotics has increased. On the other hand, by creating drug resistance to organicmoietiesbased antibiotics, novel antibiotics have attracted the attention of researchers.Nano-scale metal oxides are increasingly being considered for medical applications, especially as antibacterial agents.In this study, iron oxide nanoparticles (IONPs) and zinc oxide nanoparticles (ZONPs) were prepared via electrical discharge method in liquid medium by changing parameters such as wire diameter and electric current intensity. Synthesized NPs were evaluated by XRD, UV_Visible, FE_SEM, EDS, HR_TEM and TEM analyzes. Also, the antibacterial properties of these nanoparticles were evaluated in different ways against gram-positive and gram-negative bacteria.


2021 ◽  
Vol 17 (5) ◽  
pp. 114
Author(s):  
ShivaPrasad Kollur ◽  
AzharuddinB Daphedar ◽  
SiddappaB Kakkalameli ◽  
Govindappa Melappa ◽  
TarikereChandrashekharappa Taranath ◽  
...  

2020 ◽  
Vol 20 (10) ◽  
pp. 5977-5996 ◽  
Author(s):  
Saee Gharpure ◽  
Balaprasad Ankamwar

With increase in incidence of multidrug resistant pathogens, there is a demand to adapt newer approaches in order to combat these diseases as traditional therapy is insufficient for their treatment. Use of nanotechnology provides a promising alternative as antimicrobial agents as against traditional antibiotics. Metal oxides have been exploited for a long times for their antimicrobial properties. Zinc oxide nanoparticles (ZnO NPs) are preferred over other metal oxide nanoparticles because of their bio-compatible nature and excellent antibacterial potentials. The basic mechanism of bactericidal nature of ZnO nanoparticles includes physical contact between ZnO nanoparticles and the bacterial cell wall, generation of reactive oxygen species (ROS) as well as free radicals and release of Zn2+ ions. This review focuses on different synthesis methods of ZnO nanoparticles, various analytical techniques frequently used for testing antibacterial properties, mechanism explaining antibacterial nature of ZnO nanoparticles as well as different factors affecting the antibacterial properties.


2019 ◽  
Vol 6 (5) ◽  
pp. 055512 ◽  
Author(s):  
T P Krishna Murthy ◽  
B S Gowrishankar ◽  
R Hari Krishna ◽  
M N Chandraprabha ◽  
R Sreenivasa Rao

2019 ◽  
Vol 45 (1) ◽  
pp. 15-28 ◽  
Author(s):  
Murugan Rajan ◽  
Allen Joseph Anthuvan ◽  
Kasipandi Muniyandi ◽  
Naveen Kumar Kalagatur ◽  
Saravanan Shanmugam ◽  
...  

2018 ◽  
Vol 930 ◽  
pp. 258-263 ◽  
Author(s):  
R. Galli ◽  
M. Soares ◽  
L.P. Domingos ◽  
E.B. Batiston ◽  
Luciano Luiz Silva ◽  
...  

With the increasing demand of biomaterials, numerous studies have been developed seeking to improve its properties through new obtaining and manufacturing processes. This work aimed to aggregate antimicrobial property to a biocomposite constituted of a matrix of ultra-high molecular weight polyethylene (UHMWPEE) and hydroxyapatite, by the incorporation of zinc oxide nanoparticles. The samples were prepared based on a standard composition containing 95.0 wt% of UHMWPEE and 5.0 wt% of hydroxyapatite (blank). Three compositions were evaluated ranging the amount of zinc oxide nanoparticles incorporated in the standard sample. It was observed that the increase of zinc oxide concentration aggregate a good antibacterial property in the samples tested without cause significant changes in the mechanical properties of the composites.


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