Antibacterial Properties among Different Concentration of Bioactive Glasses

2019 ◽  
Vol 814 ◽  
pp. 349-353
Author(s):  
Tanawan Wanitwisutchai ◽  
Naruporn Monmaturapoj ◽  
Ratchapin Srisatjaluk ◽  
Kittitat Subannajui ◽  
Niwat Anuwongnukroh ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Ph Value ◽  
Antibacterial Properties ◽  
Brain Heart Infusion ◽  
Bioactive Glasses ◽  
Ph Changes ◽  
Constant Ph ◽  
Low Concentrations ◽  
Zinc Oxide Nanowire

The objective of this study was to evaluate the antibacterial properties and pH changes of bioactive glasses and zinc oxide nanowire in different concentrations. Bioactive glasses (45S5 and 45S5F) were prepared in three concentrations of 10, 20, and 50 mg/ml and zinc oxide nanowire was prepared in 1 and 5 mg/ml concentrations. The materials were exposed to 500 ml brain heart infusion broth (BHI) with 1.5 x 107 of S.mutans and S.sanguinis separately. Antibacterial properties were tested indirectly by collecting 100 ml of each sample and transferred into a 96 well-plate. The optical density (OD) was evaluated using spectrophotometry at 630 nm at 24h and 48h. The pH changes were recorded. The data were statistically analyzed by Kruskal-Wallis tests. The result showed that the pH changes were significantly different in the Bioactive glass samples, while zinc oxide nanowire showed stable pH. Antibacterial activity against S.mutans was significant lower for 45S5 at 50 mg/ml, 45S5F and zinc oxide nanowire in all concentrations at 24 h. While in 48 h, 45S5, 45S5F and zinc oxide nanowire showed significant antibacterial activity in all concentration except 45S5F at 10 mg/ml. Antibacterial activity against S.sanguinis was significant for 45S5 and 45S5F at 20 and 50 mg/ml and zinc oxide nanowire in all concentration at 48h. It can be concluded that Bioactive glasses (45S5 and 45S5F) exhibited antibacterial properties and pH changes depending on its concentration, while zinc oxide nanowire exhibited antibacterial properties at low concentrations with a constant pH value.

The Effect of Modification of Hydroxyapatite Whisker with Zinc Acetate via Sol-Gel Technology

2013 ◽  
Vol 364 ◽  
pp. 655-659 ◽  
Author(s):  
Jian Feng Jin ◽  
Wen Ying Liu ◽  
Wen Yun Zhang ◽  
Qing Hua Chen ◽  
Yan Bo Yuan ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Zinc Acetate ◽  
Ph Value ◽  
Antibacterial Property ◽  
Sol Gel ◽  
Annealing Treatment ◽  
Sem Images ◽  
Different Shapes

Antibacterial activity of zinc oxide (ZnO) or strengthening of hydroxylapatite whisker (HAPw) had been studied and applied widely. However, antibacterial property of ZnO-HAPw was scarcely researched nowadays. The aim of this study was to further investigate several kinds of morphologies of ZnO-HAPw prepared by sol-gel technology at different pondus hydrogenii (pH) value and temperature. Four kinds of morphologies of ZnO-HAPw were granule, triangle, short rod and gongs nail at 70°C and pH=6.4, 37°C and pH=6.6, 70°C and pH=6.6, 70°C and pH=6.6. The SEM images of HAPw and ZnO-HAPw samples showed that the HAPw surface was smooth and no difference after annealing treatment. In addition, different shapes of nanoZnO fused uniformly on the HAPw surface. The EDS indicates nanoZnO fuses on HAPw surface.

scholarly journals Synthesis and Characterization of Selenium Nanoparticles-Lysozyme Nanohybrid System with Synergistic Antibacterial Properties

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Mahsa Vahdati ◽  
Tahereh Tohidi Moghadam
Keyword(s):  
Antibacterial Activity ◽  
Bacterial Growth ◽  
Biomedical Applications ◽  
Antibacterial Properties ◽  
Complex Form ◽  
Vital Role ◽  
Selenium Nanoparticles ◽  
Low Concentrations ◽  
Very High

AbstractIn the light of promising potency of selenium nanoparticles in biomedical applications, this is the first study to report the synergistic antibacterial activity of these nanoparticles and lysozyme. The nanohybrid system was prepared with various concentrations of each component. Resistance of Escherichia coli and Staphylococcus aureus was compared in the presence of individual Nano and Bio counterparts as well as the nanohybrid system. Upon interaction of SeNPs with Lysozyme, the nanohybrid system efficiently enhanced the antibacterial activity compared to the protein. Therefore, SeNPs play an important role in inhibition of bacterial growth at very low concentrations of protein; whereas very high amount of the protein is required to inhibit bacterial growth individually. On the other hand, lysozyme has also played a vital role in antibacterial property of SeNPs, inducing 100% inhibition at very low concentration of each component. Hence, presence of both nano and bio counterparts induced vital interplay in the Nanohybrid system. The aged samples also presented good stability of SeNPs both as the intact and complex form. Results of this effort highlight design of nanohybrid systems with synergistic antibacterial properties to overcome the emerging antibiotic resistance as well as to define fruitful applications in biomedicine and food safety.

scholarly journals Antibacterial Properties of Coaxial Spinning Membrane of Methyl ferulate/zein and Its Preservation Effect on Sea Bass

Foods ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2385
Author(s):  
Tingting Li ◽  
Yue Shen ◽  
Haitao Chen ◽  
Yuchen Xu ◽  
Dangfeng Wang ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Food Packaging ◽  
Ph Value ◽  
Antibacterial Properties ◽  
Sea Bass ◽  
Food Preservation ◽  
Fiber Membrane ◽  
Water Contact ◽  
Strong Activity ◽  
Methyl Ferulate

Methyl ferulate is a new natural antibacterial agent with strong activity and low toxicity. It has good application prospects in food preservation. In this paper, the antibacterial activity of methyl ferulate against Shigella putrefaciens was verified, and it was embedded into zein by electrospinning technology to prepare fiber membranes. The addition of methyl ferulate could improve the tensile strength of zein fiber membrane and decrease the crystallinity of the membrane, which was mainly a physical combination. The fiber membrane improved the thermal stability of methyl ferulate. The water contact angle (WCA) decreased to 54.85°. The results showed that methyl ferulate in fiber membrane could be released slowly, gradually exerting its antibacterial activity. After coating perch with methyl ferulate/zein fiber membrane, the growth of microorganisms in perch meat was inhibited, and the pH value and total volatile basic nitrogen (TVB-N)content were effectively increased. In a word, methyl ferulate had antibacterial activity in the fiber film, which was able to achieve a sustained release effect in the process of fish packaging, prolonging its antibacterial activity, and having preservation effect on sea bass; thus, it could be used in food packaging.

scholarly journals Investigation of Functionalized Surface Charges of Thermoplastic Starch/Zinc Oxide Nanocomposite Films Using Polyaniline: The Potential of Improved Antibacterial Properties

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 425
Author(s):  
Korakot Charoensri ◽  
Chatchai Rodwihok ◽  
Duangmanee Wongratanaphisan ◽  
Jung A. Ko ◽  
Jin Suk Chung ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Antibacterial Properties ◽  
Thermoplastic Starch ◽  
Nanocomposite Films ◽  
Resistant Bacteria ◽  
Surface Charges ◽  
Zno Nps ◽  
E Coli ◽  
Bionanocomposite Films

Improving the antibacterial activity of biodegradable materials is crucial for combatting widespread drug-resistant bacteria and plastic pollutants. In this work, we studied polyaniline (PANI)-functionalized zinc oxide nanoparticles (ZnO NPs) to improve surface charges. A PANI-functionalized ZnO NP surface was prepared using a simple impregnation technique. The PANI functionalization of ZnO successfully increased the positive surface charge of the ZnO NPs. In addition, PANI-functionalized ZnO improved mechanical properties and thermal stability. Besides those properties, the water permeability of the bionanocomposite films was decreased due to their increased hydrophobicity. PANI-functionalized ZnO NPs were applied to thermoplastic starch (TPS) films for physical properties and antibacterial studies using Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). The PANI-functionalized ZnO bionanocomposite films exhibited excellent antibacterial activity for both E. coli (76%) and S. aureus (72%). This result suggests that PANI-functionalized ZnO NPs can improve the antibacterial activity of TPS-based bionanocomposite films.

scholarly journals Effect of Zinc Oxide Nanoparticles on Loaded Antibiotics Against Multidrug-Resistant Acinetobacter spp.

2021 ◽  
Vol 8 (2) ◽  
pp. 51-56
Author(s):  
Behnaz Shokrollahi ◽  
Akram Sadat Tabatabaee Bafroee ◽  
Tayebeh Saleh
Keyword(s):  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Metal Oxide Nanoparticles ◽  
Antibacterial Properties ◽  
Multidrug Resistant ◽  
Diffusion Method ◽  
Resistant Bacteria ◽  
Oxide Nanoparticles ◽  
Zno Nps ◽  
X Ray

Background: Metal oxide nanoparticles (NPs) have shown promising efficacy for combating bacterial resistance due to their antibacterial properties. This research investigated the effect of zinc oxide NPs (ZnO-NPs) on the antibacterial activity of conventional antibiotics including ciprofloxacin (CIP), cefotaxime (CTX), and colistin (CST) against multidrug-resistant Acinetobacter isolates. Methods: The disc diffusion method was performed to detect the pattern of antibiotic resistance in isolates. The synthesized ZnO-NPs via the solvothermal method were characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), and energy-dispersive X-ray spectroscopy (EDS). Finally, the broth microdilution technique was conducted to demonstrate the antibacterial activity of CIP, CTX, and CST antibiotics with and without a sub-inhibitory concentration of ZnO-NPs. Results: XRD, EDS, and FESEM results confirmed the crystalline structure of ZnO-NPs, and the average size was 100±58.68 nm. All isolates were discovered to be of multidrug-resistant (MDR) type and fully susceptible to CST. The antibacterial activity of CTX and CIP was restored when combined with a sub-inhibitory level of ZnO-NPs (0.25 mg/L), and the highest activity was obtained at the concentrations of 32 µg/mL CTX and 8 µg/ mL CIP. Eventually, ZnO-NPs showed a synergistic effect on the antibacterial properties of CST against MDR Acinetobacter. Conclusions: This research indicated that the combination of ZnO-NPs with some common antibiotics can be considered as a novel strategy for reducing the spread of antibiotic-resistant bacteria.

scholarly journals Daya Antibakteri Ekstrak Daun Belimbing Wuluh (Averrhoa bilimbi linn) terhadap Bakteri Enterococcus faecalis (Antibacterial Activity of Averrhoa bilimbi linn Leaf Extract against Enterococcus Faecalis)

2016 ◽  
Vol 6 (2) ◽  
pp. 93
Author(s):  
Ranggi Hardian Nugro Astuti ◽  
Karlina Samadi ◽  
Eric Priyo Prasetyo
Keyword(s):  
Antibacterial Activity ◽  
Enterococcus Faecalis ◽  
Root Canal ◽  
Leaf Extract ◽  
Antibacterial Properties ◽  
Brain Heart Infusion ◽  
Control Group ◽  
Control Group Design ◽  
Canal Irrigation ◽  
Root Canal Irrigation

Background. The prevalence of Enterococcus faecalis bacterial infection caused the failure of root canal treatment between 24%-77%. This is due to various factors resistance and virulence of Enterococcus faecalis. This research to find alternative materials that have antibacterial properties and by utilizing natural ingredients that can later be used as a root canal irrigation. Antibacterial activity of the Averrhoa bilimbi linn leaf extract against Enterococcus faecalis bacteria can be determined by Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC). Purpose. The aim of this study was to determine the concentration of Averrhoa bilimbi linn leaf extract that has antibacterial activity against bacteria Enterococcus faecalis. Method. This research is a labolatory experimental with post test only control group design which use diluted Enterococcus faecalis ATCC 29212 according Mc. Farland standard 1,5 x 108 CFU/ml. With treatment Averrhoa bilimbi linn leaf extract on concentration 50%, 45%, 40%, 35%, 30%, and 25% given to each of 0,05 ml  Enterococcus faecalis and using Brain Heart Infusion Broth (BHIB) as planting media. Result. At the concentration 30% of Averrhoa bilimbi linn leaf extract, showed that colony’s growth less than 10%. At the concentration 35% was not revealed any bacterial growth. Conclusion. The Averrhoa bilimbi linn leaf extract has antibacterial effect on bacteria Enterococcus faecalis. The MIC was at 30% and MBC was at 35%.

Long- and short-term antibacterial properties of low-density polyethylene-based films coated with zinc oxide nanoparticles for potential use in food packaging

2019 ◽  
Vol 35 (2) ◽  
pp. 117-134 ◽  
Author(s):  
Hajer Rokbani ◽  
France Daigle ◽  
Abdellah Ajji
Keyword(s):  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Zinc Oxide Nanoparticles ◽  
Food Packaging ◽  
Antibacterial Properties ◽  
Polyethylene Film ◽  
Low Density Polyethylene ◽  
Oxide Nanoparticles ◽  
Low Density ◽  
Polyethylene Films

Concerns in food safety and the need for high-quality foods have increased the demand for extending the shelf life of packaged foods. Subsequently, promoting and investigating the development of antibacterial materials for food packaging has become inevitable. Zinc oxide nanoparticles have attracted attention lately owing to their multifunctional properties, especially antibacterial activity. For this study, antibacterial low-density polyethylene films were prepared by coating zinc oxide nanoparticles onto their surface. The low-density polyethylene film antibacterial activity was evaluated toward Gram-positive and Gram-negative bacteria. The scanning electron microscopy images showed that using anhydride-modified low-density polyethylene (LDPE-g-AM) resin permitted improved zinc oxide nanoparticle distribution on the low-density polyethylene film surface, reduced the agglomerate sizes, and reinforced the zinc oxide nanoparticle bonding to the low-density polyethylene film surface. We found that the coated low-density polyethylene films exhibited high antibacterial activity against both strains. The antibacterial tests also proved that the coated films retained their antibacterial efficiency toward Escherichia coli, even after eight months, with a reduction rate higher than 99.9%, whereas for Staphylococcus aureus the antibacterial properties for the linear low-density polyethylene (LLDPE) films decreased at eight months and improved for the LDPE-g-AM films. When the zinc oxide coated films were laminated with neat low-density polyethylene, only the LDPE-g-AM was still active against E. coli provided that the lamination thickness does not go beyond 8 µm. This research demonstrated that the coated low-density polyethylene films have excellent attributes when used as an active coating in the food packaging industry.

scholarly journals ANTIBACTERIAL PROPERTIES OF TEMPORARY FILLING MATERIALS

2018 ◽  
Vol 22 (5) ◽  
pp. 229-232
Author(s):  
S. V Tarasenko ◽  
L. A Grigor’janc ◽  
Ilana Aleksandrovna Gor ◽  
I. V Medvedeva ◽  
G. R Pogosyan
Keyword(s):  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Growth Inhibition ◽  
Epoxy Resin ◽  
Antibacterial Effect ◽  
Antibacterial Properties ◽  
Petri Dish ◽  
Filling Materials ◽  
Sealing Materials ◽  
Temporary Filling

Object: assessment of the antibacterial effect of sealing materials based on epoxy resin, zinc-eugenol of cement and hydroxide of calcium. Materials and methods: Antibacterial activity was estimated by agaro-diffusive test (ADT) estimated the of microorganisms. Plates from filling materials were placed on Petri dish, the sowed with St. aureus, and a zone of a growth inhibition of microorganisms was estimated. Materials were used right after mixing, right after hardening, in 30 days after mixing. Results: Materials had the maximum antibacterial effect after hardening, minimum in 30 days after mixing. The greatest efficiency against St. aureus showed material based on zinc-oxide- eugenol cement.

Fabrication of Zn-Sr–doped laser-spinning glass nanofibers with antibacterial properties

2016 ◽  
Vol 31 (6) ◽  
pp. 819-831 ◽  
Author(s):  
María Magdalena Echezarreta-López ◽  
Trinidad de Miguel ◽  
Félix Quintero ◽  
Juan Pou ◽  
Mariana Landín
Keyword(s):  
Antibacterial Activity ◽  
Bioactive Glass ◽  
Antibacterial Properties ◽  
Growth Index ◽  
Bactericidal Effect ◽  
Bioactive Glasses ◽  
Bioactive Materials ◽  
Nanofibrous Structure ◽  
The Media ◽  
45S5 Bioglass

The morphology and dimensions of bioactive materials are essential attributes to promote tissue culture. Bioactive materials with nanofibrous structure have excellent potential to be used as bone-defect fillers, since they mimic the collagen in the extracellular matrix. On the other hand, bioactive glasses with applications in regenerative medicine may present antibacterial properties, which depend on glass composition, concentration and the microorganisms tested. Likewise, their morphology may influence their antibacterial activity too. In the present work, the laser-spinning technique was used to produce bioactive glass nanofibers of two different compositions: 45S5 Bioglass® and ICIE16M, bioactive glass doped with zinc and strontium. Their antibacterial activity against Staphylococcus aureus was tested by culturing them in dynamic conditions. Bacterial growth index profiles during the first days of experiment can be explained by the variations in the pH values of the media. The bactericidal effect of the doped nanofibers at longer times is justified by the release of zinc and strontium ions. Cytotoxicity was analyzed by means of cell viability tests performed with BALB/3T3 cell line.

scholarly journals Green Synthesis of Zinc Oxide Nanoparticles and their Antibacterial Properties using Plant Extract of Aristolochia elegans

2020 ◽  
Vol 32 (10) ◽  
pp. 2589-2593
Author(s):  
Juhi Aggarwal ◽  
Tanveer Alam
Keyword(s):  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Zinc Oxide Nanoparticles ◽  
Leaf Extract ◽  
Antibacterial Property ◽  
Antibacterial Properties ◽  
Oxide Nanoparticles ◽  
Gram Negative ◽  
E Coli ◽  
Ft Ir

Present paper deals with the synthesis of zinc oxide nanoparticles (ZnONPs) using leaf extract of Aristolochia elegans and study of antibacterial property for some human bacterial pathogens. The ZnONPs synthesized were characterized using UV-Vis, FT-IR, XRD, EDX, TEM and SEM techniques. The synthesized ZnONP having a crystallite size of 20.1 nm exhibited a distinct absorption peak maxima at 358 nm. The ZnONPs synthesized using the extract of A. elegans have shown antibacterial activity against M. luteus, S. aureus (Gram-positive), E. coli and P. aeruginosa (Gram-negative).

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