Evaluation of Long–Lasting Antibacterial Properties and Cytotoxic Behavior of Functionalized Silver-Nanocellulose Composite

Materials possessing long-term antibacterial behavior and high cytotoxicity are of extreme interest in several applications, from biomedical devices to food packaging. Furthermore, for the safeguard of the human health and the environment, it is also stringent keeping in mind the need to gather good functional performances with the development of ecofriendly materials and processes. In this study, we propose a green fabrication method for the synthesis of silver nanoparticles supported on oxidized nanocellulose (ONCs), acting as both template and reducing agent. The complete structural and morphological characterization shows that well-dispersed and crystalline Ag nanoparticles of about 10–20 nm were obtained in the cellulose matrix. The antibacterial properties of Ag-nanocomposites (Ag–ONCs) were evaluated through specific Agar diffusion tests against E. coli bacteria, and the results clearly demonstrate that Ag–ONCs possess high long-lasting antibacterial behavior, retained up to 85% growth bacteria inhibition, even after 30 days of incubation. Finally, cell viability assays reveal that Ag-ONCs show a significant cytotoxicity in mouse embryonic fibroblasts.

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Ggrafted antimicrobial cotton fabrics with N-halamine groups via atom transfer radical polymerization

10.21203/rs.3.rs-261084/v1 ◽

2021 ◽

Author(s):

Panpan Peng ◽

Ziwen Zhang ◽

Jianjun Yang ◽

Mingyuan Wu ◽

Qingyun Wu ◽

...

Keyword(s):

Antibacterial Activity ◽

Thermal Property ◽

Atom Transfer Radical Polymerization ◽

Radical Polymerization ◽

Antibacterial Properties ◽

Cotton Fabrics ◽

Future Application ◽

Atom Transfer ◽

E Coli

Abstract An N-halamine precursor 2-(3-(6-methyl-4-oxo-1,4-dihydropyrimidin-2-yl)ureido)ethyl methacrylate (SCMHBMA) was synthesized and grafted on cotton fabrics via atom transfer radical polymerization for antibacterial function after chlorination. The preparation and chlorinated cotton fabrics (Cotton-g-PSMA-Cl) were characterized with FTIR, XPS, SEM, and TGA. The properties of prepared Cotton-g-PSMA-Cl, including thermal property, antibacterial efficiency, durability, and stability, were systematically evaluated. The results showed that these chlorinated Cotton-g-PSMA-Cl fabrics possessed excellent antibacterial activity against E. coli. and S. aureus. After 10 washing cycles and 60 days of routine storage, active chlorine concentrations (Cl+%) were reduced only 22% and 18%, respectively, and the reduced Cl+% effectively reverted by simple rechlorination. This new N-halamine antibacterial cotton composite with superior antibacterial properties exhibited potential for future application in the long-term antibacterial field.

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Safely Dissolvable and Healable Active Packaging Films Based on Alginate and Pectin

Polymers ◽

10.3390/polym11101594 ◽

2019 ◽

Vol 11 (10) ◽

pp. 1594 ◽

Cited By ~ 9

Author(s):

Maziyar Makaremi ◽

Hosnieh Yousefi ◽

Giuseppe Cavallaro ◽

Giuseppe Lazzara ◽

Calvin Bok Sun Goh ◽

...

Keyword(s):

Mechanical Properties ◽

Morphological Study ◽

Food Packaging ◽

Antibacterial Properties ◽

Packaging Material ◽

Packaging Films ◽

E Coli ◽

Biocomposite Films ◽

Healing Efficiency ◽

Potential Applications

Extensive usage of long-lasting petroleum based plastics for short-lived application such as packaging has raised concerns regarding their role in environmental pollution. In this research, we have developed active, healable, and safely dissolvable alginate-pectin based biocomposites that have potential applications in food packaging. The morphological study revealed the rough surface of these biocomposite films. Tensile properties indicated that the fabricated samples have mechanical properties in the range of commercially available packaging films while possessing excellent healing efficiency. Biocomposite films exhibited higher hydrophobicity properties compared to neat alginate films. Thermal analysis indicated that crosslinked biocomposite samples possess higher thermal stability in temperatures below 120 °C, while antibacterial analysis against E. coli and S. aureus revealed the antibacterial properties of the prepared samples against different bacteria. The fabricated biodegradable multi-functional biocomposite films possess various imperative properties, making them ideal for utilization as packaging material.

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Preparation and Characterization of Potato Starch Film with Various Size of Nano-SiO2

Polymers ◽

10.3390/polym10101172 ◽

2018 ◽

Vol 10 (10) ◽

pp. 1172 ◽

Cited By ~ 16

Author(s):

Rongfei Zhang ◽

Xiangyou Wang ◽

Meng Cheng

Keyword(s):

Mechanical Properties ◽

Food Packaging ◽

Water Resistance ◽

Gas Permeability ◽

Potato Starch ◽

Antibacterial Properties ◽

E Coli ◽

Nano Sio2 ◽

Starch Films

The various sizes (15, 30, 80, and 100 nm) of nano-SiO2/potato starch films were synthesized and characterized. The gas permeability, antibacterial properties, and mechanical properties of the films were evaluated to their potential for application as food packaging materials. Results indicated that the 100 nm nano-SiO2 was well dispersed in the starch matrix, which induced an active group on the surface of 100 nm nano-SiO2 adequately combined with starch macromolecule. The water resistance and mechanical properties of the films were improved with the addition of nano-SiO2. Notably, resistance to ultraviolet and thermal aging was also enhanced. The nano-SiO2/potato starch films were more efficient against Escherichia coli (E. coli) than Staphylococcus aureus (S. aureus). Remarkable preservation properties of the films packaging the white mushrooms were obtained, with those of the 100 nm films considered superior. This study can significantly guide the rational choice of the nano-SiO2 size to meet the packaging requirements of various agricultural products.

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Physico-Mechanical and Antibacterial Properties of PLA/TiO2 Composite Materials Synthesized via Electrospinning and Solution Casting Processes

Coatings ◽

10.3390/coatings9080525 ◽

2019 ◽

Vol 9 (8) ◽

pp. 525 ◽

Cited By ~ 14

Author(s):

Shiyi Feng ◽

Feng Zhang ◽

Saeed Ahmed ◽

Yaowen Liu

Keyword(s):

Water Vapor ◽

Food Packaging ◽

Water Solubility ◽

Antibacterial Properties ◽

Water Vapor Permeability ◽

Vapor Permeability ◽

Solution Casting ◽

Water Contact ◽

E Coli ◽

Composites Materials

In this study, PLA/TiO2 composites materials were prepared via electrospinning and solution casting processes. By testing the mechanical properties, water contact angle, water vapor permeability, and solubility of the composite nanofibers and films, the comprehensive performances of the two types of nanocomposites were analyzed. The results show that maximum tensile strengths of 2.71 ± 0.11 MPa and 14.49 ± 0.13 MPa were achieved for the nanofibers and films at a TiO2 content of 0.75 wt.%. Moreover, the addition of TiO2 significantly cut down the water vapor transmittance rate of the nanofibers and films while significantly improving the water solubility. Further, the antibacterial activity increased under UV-A irradiation for a TiO2 nanoparticle content of 0.75 wt.%, and the nanofiber and films exhibited inhibition zones of 4.86 ± 0.50 and 3.69 ± 0.40 mm for E. coli, and 5.98 ± 0.77 and 4.63 ± 0.45 mm for S. aureus, respectively. Overall, the performance of the nanofiber was better than that of the film. Nevertheless, both the nanocomposite membranes satisfied the requirements of food packaging materials.

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Gelatin-Based Film Integrated with Copper Sulfide Nanoparticles for Active Packaging Applications

Applied Sciences ◽

10.3390/app11146307 ◽

2021 ◽

Vol 11 (14) ◽

pp. 6307

Author(s):

Swarup Roy ◽

Jong-Whan Rhim

Keyword(s):

Antibacterial Activity ◽

Copper Sulfide ◽

Biomedical Applications ◽

Food Packaging ◽

Composite Films ◽

Antibacterial Properties ◽

Barrier Properties ◽

Gelatin Film ◽

E Coli ◽

Water Vapor Barrier

Gelatin-based multifunctional composite films were prepared by reinforcing various amounts of copper sulfide nanoparticles (CuSNP, 0.0, 0.5, 1.0, and 2.0 wt %), and the effect of CuSNP on the film was evaluated by analyzing its physical and antibacterial properties. CuSNP makes a compatible film with gelatin. The inclusion of CuSNP significantly enhanced the UV blocking, mechanical strength, and water vapor barrier properties of the gelatin film. The inclusion of CuSNP of 1.0 wt % or less did not affect the transparency of the gelatin film. When 2.0 wt % of CuSNP was mixed, the hydrophilicity of the gelatin film did not change noticeably, but its thermal properties slightly increased. Moreover, the gelatin/CuSNP composite film presented effective antibacterial activity against E. coli and some activity against L. monocytogenes. Gelatin/CuSNP composite films with better functional and physical properties can be used for food packaging or biomedical applications.

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Study on antibacterial papermaking for food packaging using rice straw nanocellulose and nanochitosan

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/947/1/012023 ◽

2021 ◽

Vol 947 (1) ◽

pp. 012023

Author(s):

Thai Dinh Cuong ◽

Nguyen Viet Linh ◽

Nguyen Hoang Chung ◽

Le Quang Dien

Keyword(s):

Rice Straw ◽

Food Packaging ◽

Kraft Pulp ◽

Antibacterial Properties ◽

E Coli ◽

Dilute Sulfuric Acid ◽

Best Value ◽

Surface Sizing ◽

Solids Content ◽

Hydrolysis Of

Abstract In this study, the antibacterial bleached hardwood kraft pulp-based paper sheets with a base weight of around 125 g/m2 were made with surface sizing by a mixture of oxidated starch and additives from acetic acid-treated nanochitosan and nanocellulose prepared from limited hydrolysis of rice straw by dilute sulfuric acid with added hydrogen peroxide. The characteristics of nanomaterials were analyzed by SEM and XRD. The barrier and antibacterial properties of paper were investigated to assess their ability to contain liquid and food products. Using the sizing mixture which has a solids content of 8% with additives improved the mechanical strength of the paper. The best value of tearing strength of 18.94 mN.m2/g was obtained with adding of 0.5% of nanocellulose and 1.5% of nanochitosan. The burst index of paper reached its highest value of 5.07 kP.m2/g when both nanocellulose and nanochitosan were used at the dosages of 1.0%. The antibacterial features on E. coli clearly showed in papers with 2% of nanochitosan or with the mixture of 1% nanocellulose and 1% nanochitosan addition.

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Effects of Heat Treatment and Tea Polyphenols on the Structure and Properties of Polyvinyl Alcohol Nanofiber Films for Food Packaging

Coatings ◽

10.3390/coatings10010049 ◽

2020 ◽

Vol 10 (1) ◽

pp. 49

Author(s):

Jinjie Luo ◽

Duquan Zuo ◽

Zhenghua Deng ◽

Anping Ji ◽

Guofeng Xia

Keyword(s):

Heat Treatment ◽

Polyvinyl Alcohol ◽

Food Packaging ◽

Antibacterial Properties ◽

Tea Polyphenols ◽

Compact Structure ◽

Elongation At Break ◽

E Coli ◽

Nanofiber Film ◽

And Staphylococcus Aureus

In this study, biodegradable polyvinyl alcohol (PVA) was blended with natural antioxidant tea polyphenols (TPs) to produce PVA/TP nanofiber films by electrospinning. The effects of heat treatment and TP incorporation on the structural and physical properties of the films were then evaluated. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) revealed that the PVA/TP nanofiber film has a more compact structure and better morphology than PVA alone. In addition, the water resistance was enhanced, and the formation of hydrogen bonds between the TP and PVA molecules increased via the heat treatment. Furthermore, the mechanical, antioxygenic, and antibacterial properties of the nanofiber films were significantly improved (P < 0.05) owing to the incorporation of TP. In particular, when the mass ratio of the PVA/TP was 7:3, the elongation at break (EAB) of the film increased to 105.24% ± 2.87%, and the antioxidant value reached a maximum at 64.83% ± 5.21%. In addition, the antibacterial activity of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) increased to the maximum levels of 82.48% ± 2.12% and 86.25% ± 2.32%, respectively. In summary, our study produced a functional food packaging material that includes preservation with an acceptable bioactivity, ability to keep food fresh, and biodegradability.

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Degradable and Photocatalytic Antibacterial Au-TiO2/Sodium Alginate Nanocomposite Films for Active Food Packaging

Nanomaterials ◽

10.3390/nano8110930 ◽

2018 ◽

Vol 8 (11) ◽

pp. 930 ◽

Cited By ~ 12

Author(s):

Siying Tang ◽

Zhe Wang ◽

Penghui Li ◽

Wan Li ◽

Chengyong Li ◽

...

Keyword(s):

Composite Film ◽

Sodium Alginate ◽

Light Absorption ◽

Food Packaging ◽

Antibacterial Properties ◽

Nanocomposite Films ◽

Water Contact ◽

E Coli ◽

Active Food Packaging ◽

Application Potential

A degradable and antibacterial sodium alginate film containing functional Au-TiO2 nanocomposites for food packaging was successfully developed. The Au-TiO2 nanocomposites are synthesized hydrothermally and mixed with the alginate solution to form the film by a casting method. The Au-TiO2 nanocomposites enable the film with excellent visible light absorption and transfer ability with the light absorption rang covering UV–visible wavelength (300–800 nm) and induce the increase of the film water contact angle from 40° to 74°, which contributes to the film shape stability. Furthermore, compared to the TiO2 nanoparticle-incorporated film, the antibacterial ability of Au-TiO2/sodium alginate composite film is improved approximately by 60% and 50% against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli), respectively, in light conditions. The antibacterial property of the film arises from the increased production of reactive oxygen species (ROS) induced by the surface plasmonic resonance of Au nanoparticles. The degradable and antibacterial properties render the composite film of great application potential in food packaging industry.

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Antibacterial effect of Ag nanoparticles into the paper coatings

Nordic Pulp & Paper Research Journal ◽

10.1515/npprj-2019-0034 ◽

2019 ◽

Vol 34 (4) ◽

pp. 507-515 ◽

Cited By ~ 2

Author(s):

Emine Arman Kandirmaz ◽

Arif Ozcan

Keyword(s):

Ag Nanoparticles ◽

Chemical Structure ◽

Food Packaging ◽

Antibacterial Effect ◽

Antibacterial Properties ◽

Printing Industry ◽

Paper Coating ◽

E Coli ◽

Paper Coatings ◽

Infrared Spectrophotometer

Abstract Food packaging is the most important output of the printing industry. Giving antibacterial effect to the papers used in food packaging will extend the shelf life of the product and food transfer in healthier conditions. The nanoparticles with known antibacterial activity are nanosilver, nanogold, nanosilica. Binders used in paper coating provide a good nutrient medium for bacteria. In this study, Ag nanoparticles was first synthesized as monodisperse in 10 nm size with polyvinyl pyrrolidone and sodium boron reaction which will give antibacterial properties to paper coatings. The chemical structure of the synthesized Ag nanoparticles is illuminated by fourier transform infrared spectrophotometer (FTIR). Different paper coating formulations containing varying amounts of Ag nanoparticles were prepared with starch binder. Using these mixtures; papers coated with a laboratory-type paper coating machine onto 80 g/m2 paper. Color, gloss, contact angle, surface energy, antibacterial properties of the paper against the E. coli bacteria and S. aureus bacteria were examined. As a result, Ag nanoparticles has been successfully synthesized and used in paper coating. Antibacterial and printability properties were improved by increasing the amount of Ag nanoparticles.

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A Facile Strategy to Fabricate Silver-Functionalized Superhydrophobic Cotton Fabrics with Long-Term Antibacterial Properties

10.21203/rs.3.rs-696268/v1 ◽

2021 ◽

Author(s):

Zhanpeng Ye ◽

Hui Rong ◽

Shuangyang Li ◽

Qing Ma ◽

Liandong Deng ◽

...

Keyword(s):

Antibacterial Activity ◽

Antibacterial Properties ◽

Inhibition Zone ◽

Dip Coating ◽

Hybrid Nanoparticles ◽

Preparation Process ◽

E Coli ◽

Wetting Properties ◽

Medical Materials

Abstract Silver-functionalized textiles, have attracted considerable attention as the most common protective medical materials. However, their poor antibacterial durability and relatively tedious preparation process limit their applications. In this study, a kind of multifunctional cotton fabric was prepared through simultaneous dip-coating of silver-silica hybrid nanoparticles (Ag-MSNs) and fluorinated MSNs (F-MSNs), leading to excellent antifouling due to superhydrophobicity and long-term antibacterial properties from the sustained release of Ag ions (Ag+). Detailed studies were performed to evaluate their structure and protective performance, especially the long-term antibacterial properties of the obtained fabrics through the inhibition zone experiment for 25 d. The as-prepared fabrics showed good non-wetting properties and sustained antibacterial activity against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). Further washing and abrasion experimentations demonstrated that the as-prepared fabrics had stable hydrophobicity and antibacterial properties, much more reliable than commercially derived antibacterial gauze. Considering the readily available inexpensive materials and simple preparation process as well as long-term and efficient sterilization effect, the strategy provided herein opens a new and facile way to fabricate multifunctional fabrics with robust hydrophobic and antibacterial activity for the future medical materials.

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