Oxygen scavenging polyolefin nanocomposite films containing an iron modified kaolinite of interest in active food packaging applications

2012 ◽  
Vol 16 ◽  
pp. 211-217 ◽  
Author(s):  
Maria A. Busolo ◽  
Jose M. Lagaron
Keyword(s):  
Food Packaging ◽  
Nanocomposite Films ◽  
Oxygen Scavenging ◽  
Active Food Packaging

Enhanced functional properties of biodegradable Polyvinyl alcohol /carboxymethyl cellulose (PVA/CMC) composite films reinforced with L-alanine surface modified CuO nanorods

2021 ◽  
Author(s):  
Yamanappagouda Amaregouda ◽  
Kantharaju Kamanna ◽  
Tilak Gasti ◽  
Vijay Kumbar
Keyword(s):  
Polyvinyl Alcohol ◽  
Carboxymethyl Cellulose ◽  
Food Packaging ◽  
Composite Films ◽  
Nanocomposite Films ◽  
Soil Burial ◽  
High Antibacterial Activity ◽  
Active Food Packaging ◽  
Surface Modified ◽  
Cuo Nanorods

Abstract Herein, we described novel biogenic preparation of the CuO nanorods and its surface modification with L-alanine amino acid accelerated by microwave irradiation. The effect of surface functionalized CuO nanorods on the polyvinyl alcohol/carboxymethyl cellulose film physico-mechanical properties were investigated through various characterization techniques. The tensile strength was improved from 28.58 ± 0.73 MPa to 43.40 ± 0.93 MPa, UV shielding ability and barrier to the water vapors were highly enhanced when PVA/CMC matrices filled with 8 wt% of CuO-L-alanine. In addition, the prepared films exhibited acceptable overall migration limit and readily undergoes soil burial degradation. Nevertheless, CuO-L-alanine incorporated films showed potent antioxidant activity against DPPH radicals and had high antibacterial activity against Staphylococcus aureus and Escherichia coli, and antifungal activity against Candida albicans and Candida tropicalis. Furthermore, the nanocomposite films showed negligible cytotoxic effect on HEK293 and Caco-2 cell lines. In these contexts, the developed nanocomposite films can be implementing as an active food packaging material.

Preparation, characterization, and oxygen scavenging capacity of biodegradable α-tocopherol/PLA microparticles for active food packaging applications

2015 ◽  
Vol 38 (5) ◽  
pp. 981-986 ◽  
Author(s):  
Paola Scarfato ◽  
Elvira Avallone ◽  
Maria Rosaria Galdi ◽  
Luciano Di Maio ◽  
Loredana Incarnato
Keyword(s):  
Food Packaging ◽  
Oxygen Scavenging ◽  
Scavenging Capacity ◽  
Active Food Packaging

scholarly journals Effect of Cellulose Nanocrystals and Lignin Nanoparticles on Mechanical, Antioxidant and Water Vapour Barrier Properties of Glutaraldehyde Crosslinked PVA Films

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1364 ◽  
Author(s):  
Weijun Yang ◽  
Guochuang Qi ◽  
José Maria Kenny ◽  
Debora Puglia ◽  
Piming Ma
Keyword(s):  
Water Vapour ◽  
Cellulose Nanocrystals ◽  
Food Packaging ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Primary Objective ◽  
Nanocomposite Films ◽  
Shielding Effect ◽  
Strong Interactions ◽  
Active Food Packaging

In this work, PVA nanocomposite films containing cellulose nanocrystals (CNC) and different amounts of lignin nanoparticles (LNP), prepared via a facile solvent cast method, were crosslinked by adding glutaraldehyde (GD). The primary objective was to investigate the effects of crosslinker and bio-based nanofillers loading on thermal, mechanical, antioxidant and water barrier behaviour of PVA nanocomposite films for active food packaging. Thermogravimetric analysis showed improved thermal stability, due to the strong interactions between LNP, CNC and PVA in the presence of GD, while Wide-angle X-ray diffraction results confirmed a negative effect on crystallinity, due to enhanced crosslinking interactions between the nanofillers and PVA matrix. Meanwhile, the tensile strength of PVA-2CNC-1LNP increased from 26 for neat PVA to 35.4 MPa, without sacrificing the ductility, which could be explained by a sacrificial hydrogen bond reinforcing mechanism induced by spherical-like LNP. UV irradiation shielding effect was detected for LNP containing PVA films, also migrating ingredients from PVA nanocomposite films induced radical scavenging activity (RSA) in the produced films in presence of LNP. Furthermore, PVA-CNC-LNP films crosslinked by GD showed marked barrier ability to water vapour.

scholarly journals Antimicrobial and Conductive Nanocellulose-Based Films for Active and Intelligent Food Packaging

Nanomaterials ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 980 ◽  
Author(s):  
Carla Vilela ◽  
Catarina Moreirinha ◽  
Eddy M. Domingues ◽  
Filipe M. L. Figueiredo ◽  
Adelaide Almeida ◽  
...  
Keyword(s):  
Food Packaging ◽  
Mechanical Performance ◽  
Barrier Properties ◽  
High Water ◽  
Nitrogen Atmosphere ◽  
Nanocomposite Films ◽  
One Pot ◽  
Glycol Diacrylate ◽  
Active Food Packaging ◽  
The One

Bacterial nanocellulose (BNC) is becoming an important substrate for engineering multifunctional nanomaterials with singular and tunable properties for application in several domains. Here, antimicrobial conductive nanocomposites composed of poly(sulfobetaine methacrylate) (PSBMA) and BNC were fabricated as freestanding films for application in food packaging. The nanocomposite films were prepared through the one-pot polymerization of sulfobetaine methacrylate (SBMA) inside the BNC nanofibrous network and in the presence of poly(ethylene glycol) diacrylate as cross-linking agent. The ensuing films are macroscopically homogeneous, more transparent than pristine BNC, and present thermal stability up to 265 °C in a nitrogen atmosphere. Furthermore, the films have good mechanical performance (Young’s modulus ≥ 3.1 GPa), high water-uptake capacity (450–559%) and UV-blocking properties. The zwitterion film with 62 wt.% cross-linked PSBMA showed bactericidal activity against Staphylococcus aureus (4.3–log CFU mL−1 reduction) and Escherichia coli (1.1–log CFU mL−1 reduction), and proton conductivity ranging between 1.5 × 10−4 mS cm−1 (40 °C, 60% relative humidity (RH)) and 1.5 mS cm−1 (94 °C, 98% RH). Considering the current set of properties, PSBMA/BNC nanocomposites disclose potential as films for active food packaging, due to their UV-barrier properties, moisture scavenging ability, and antimicrobial activity towards pathogenic microorganisms responsible for food spoilage and foodborne illness; and also for intelligent food packaging, due to the proton motion relevant for protonic-conduction humidity sensors that monitor food humidity levels.

scholarly journals Corn Starch/Chitosan Nanoparticles/Thymol Bio-Nanocomposite Films for Potential Food Packaging Applications

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 390
Author(s):  
Siti Hajar Othman ◽  
Nur Fitrah Liyana Othman ◽  
Ruzanna Ahmad Shapi’i ◽  
Siti Hajar Ariffin ◽  
Khairul Faezah Md. Yunos
Keyword(s):  
Shelf Life ◽  
Food Packaging ◽  
Corn Starch ◽  
Chitosan Nanoparticles ◽  
Nanocomposite Films ◽  
Packaging Materials ◽  
Food Packaging Materials ◽  
Active Food Packaging ◽  
Potential Food ◽  
Cherry Tomatoes

This work aims to develop corn starch/chitosan nanoparticles/thymol (CS/CNP/Thy) bio-nanocomposite films as potential food packaging materials that can enhance the shelf life of food. CS/CNP/Thy bio-nanocomposite films were prepared by the addition of different concentrations of thymol (0, 1.5, 3.0, 4.5 w/w%) using a solvent casting method. The resulting films were characterized in terms of optical, mechanical, and water vapor permeability (WVP) properties. The addition of thymol was found to reduce the tensile strength (TS), elongation at break (EAB), and Young’s modulus (YM) of the films. Generally, the increment in the concentration of thymol did not significantly affect the TS, EAB, and YM values. The addition of 1.5 w/w% thymol increased the WVP of the films but the WVP reduced with the increase in thymol concentrations. CS/CNP/Thy-3% bio-nanocomposite films demonstrated the potential to lengthen the shelf life of cherry tomatoes packed with the films, whereby the cherry tomatoes exhibited no significant changes in firmness and the lowest weight loss. In addition, no mold growth was observed on the sliced cherry tomatoes that were in direct contact with the films during 7 days of storage, proving the promising application of the films as active food packaging materials.

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

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 930 ◽  
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.

Deciphering the potential of guar gum/Ag-Cu nanocomposite films as an active food packaging material

2017 ◽  
Vol 157 ◽  
pp. 65-71 ◽  
Author(s):  
Yasir Ali Arfat ◽  
Mohammed Ejaz ◽  
Harsha Jacob ◽  
Jasim Ahmed
Keyword(s):  
Food Packaging ◽  
Guar Gum ◽  
Packaging Material ◽  
Nanocomposite Films ◽  
Active Food Packaging

scholarly journals Low-Density Polyethylene Films Carrying ferula asafoetida Extract for Active Food Packaging: Thermal, Mechanical, Optical, Barrier, and Antifungal Properties

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Razieh Niazmand ◽  
Bibi Marzieh Razavizadeh ◽  
Farzaneh Sabbagh
Keyword(s):  
Polymer Matrix ◽  
Food Packaging ◽  
Barrier Properties ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Optical Barrier ◽  
Leaf Extracts ◽  
Polyethylene Films ◽  
Active Food Packaging ◽  
Ferula Asafoetida

The physical, thermal, mechanical, optical, microstructural, and barrier properties of low-density polyethylene films (LDPE) containing ferula asafoetida leaf and gum extracts were investigated. Results showed a reduction in elasticity and tensile strength with increasing extract concentration in the polymer matrix. The melting temperature and enthalpy increased with increasing concentration of extracts. The films containing extracts had lower L∗ and a∗ and higher b∗ indices. The films containing leaf extract had more barrier potential to UV than the gum extracts. The oxygen permeability in films containing 5% of leaf and gum extracts increased by 2.3 and 2.1 times, respectively. The morphology of the active films was similar to bubble swollen islands, which was more pronounced at higher concentrations of gum and leaf extracts. FTIR results confirmed some chemical interactions of ferula extracts with the polymer matrix. At the end of day 14th, the growth rate of Aspergillus niger and Saccharomyces cerevisea in the presence of the PE-Gum-5 reduced more than PE-Leaf-5 (3.7 and 2.4 logarithmic cycles, respectively) compared to the first day. Our findings showed that active LDPE films have desire thermo-mechanical and barrier properties for food packaging.

scholarly journals Incorporation of Poly(Itaconic Acid) with Quaternized Thiazole Groups on Gelatin-Based Films for Antimicrobial-Active Food Packaging

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 200
Author(s):  
Celeste Cottet ◽  
Andrés G. Salvay ◽  
Mercedes A. Peltzer ◽  
Marta Fernández-García
Keyword(s):  
Antimicrobial Activity ◽  
Itaconic Acid ◽  
Food Packaging ◽  
Crosslinking Agent ◽  
Radical Scavenging ◽  
Proton Nuclear Magnetic Resonance ◽  
Esterification Reaction ◽  
Alkylation Reaction ◽  
Vapor Permeability ◽  
Active Food Packaging

Poly(itaconic acid) (PIA) was synthesized via conventional radical polymerization. Then, functionalization of PIA was carried out by an esterification reaction with the heterocyclic groups of 1,3-thiazole and posterior quaternization by N-alkylation reaction with iodomethane. The modifications were confirmed by Fourier transform infrared (FTIR) and proton nuclear magnetic resonance (1H-NMR), as well as ζ-potential measurements. Their antimicrobial activity was tested against different Gram-negative and Gram-positive bacteria. After characterization, the resulting polymers were incorporated into gelatin with oxidized starch and glycerol as film adjuvants, and dopamine as crosslinking agent, to develop antimicrobial-active films. The addition of quaternized polymers not only improved the mechanical properties of gelatin formulations, but also decreased the solution absorption capacity during the swelling process. However, the incorporation of synthesized polymers increased the deformation at break values and the water vapor permeability of films. The antioxidant capacity of films was confirmed by radical scavenging ability and, additionally, those films exhibited antimicrobial activity. Therefore, these films can be considered as good candidates for active packaging, ensuring a constant concentration of the active compound on the surface of the food, increasing products’ shelf-life and reducing the environmental impact generated by plastics of petrochemical origin.

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