Antimicrobial and biodegradable food packaging applications of polycaprolactone/organo nanoclay/chitosan polymeric composite films

Some of the current challenges faced by the food industry deal with the natural ripening process and the short shelf-life of fresh and minimally processed products. The loss of vitamins and minerals, lipid oxidation, enzymatic browning, and growth of microorganisms have been the main issues for many years within the innovation and improvement of food packaging, which seeks to preserve and protect the product until its consumption. Most of the conventional packaging are petroleum-derived plastics, which after product consumption becomes a major concern due to environmental damage provoked by their difficult degradation. In this sense, many researchers have shown interest in edible films and coatings, which represent an environmentally friendly alternative for food packaging. To date, chitosan (CS) is among the most common materials in the formulation of these biodegradable packaging together with polysaccharides, proteins, and lipids. The good film-forming and biological properties (i.e., antimicrobial, antifungal, and antiviral) of CS have fostered its usage in food packaging. Therefore, the goal of this paper is to collect and discuss the latest development works (over the last five years) aimed at using CS in the manufacture of edible films and coatings for food preservation. Particular attention has been devoted to relevant findings in the field, together with the novel preparation protocols of such biodegradable packaging. Finally, recent trends in new concepts of composite films and coatings are also addressed.

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Tailoring the structural and optical features of PtCl4@ PVA polymeric composite films for optical applications

Optical Materials ◽

10.1016/j.optmat.2021.111416 ◽

2021 ◽

Vol 120 ◽

pp. 111416

Author(s):

A.A.A. Darwish ◽

A.M. Aboraia ◽

S.R. Alharbi ◽

A.M. El Shafey ◽

Zuhair M. Mohammedsaleh ◽

...

Keyword(s):

Composite Films ◽

Polymeric Composite ◽

Optical Applications

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Preparation and characterization of polylactic acid/fenugreek essential oil/curcumin composite films for food packaging applications

International Journal of Biological Macromolecules ◽

10.1016/j.ijbiomac.2021.11.090 ◽

2021 ◽

Author(s):

S. Mohan ◽

K. Panneerselvam

Keyword(s):

Essential Oil ◽

Polylactic Acid ◽

Food Packaging ◽

Composite Films

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

10.21203/rs.3.rs-918116/v1 ◽

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.

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Alignment of Boron Nitride Nanotubes in Polymeric Composite Films for Thermal Conductivity Improvement

The Journal of Physical Chemistry C ◽

10.1021/jp911431f ◽

2010 ◽

Vol 114 (10) ◽

pp. 4340-4344 ◽

Cited By ~ 142

Author(s):

Takeshi Terao ◽

Chunyi Zhi ◽

Yoshio Bando ◽

Masanori Mitome ◽

Chengchun Tang ◽

...

Keyword(s):

Thermal Conductivity ◽

Boron Nitride ◽

Composite Films ◽

Polymeric Composite ◽

Boron Nitride Nanotubes

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Preparation of Cellulose Nanofibrils by High-Pressure Homogenizer and Zein Composite Films

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.829.534 ◽

2013 ◽

Vol 829 ◽

pp. 534-538 ◽

Cited By ~ 9

Author(s):

Alireza Shakeri ◽

Sattar Radmanesh

Keyword(s):

Atomic Force Microscopy ◽

High Pressure ◽

Food Packaging ◽

Cellulose Nanofibrils ◽

Composite Films ◽

Average Diameter ◽

Nanocomposite Films ◽

Force Microscopy ◽

Atomic Force ◽

High Pressure Homogenizer

Cellulose nanofibrils ( NF ) have several advantages such as biodegradability and safety toward human health. Zein is a biodegradable polymer with potential use in food packaging applications. It appears that polymer nanocomposites are one of the most promising applications of zein films. Cellulose NF were prepared from starting material Microcrystalline cellulose (MCC) by an application of a high-pressure homogenizer at 20,000 psi and treatment consisting of 15 passes. Methods such as atomic force microscopy were used for confirmation of nanoscale size production of cellulose. The average diameter 45 nm were observed. Zeincellulose NF nanocomposite films were prepared by casting ethanol suspensions of Zein with different amounts of cellulose NF in the 0% to 5%wt. The nanocomposites were characterized by using Fourier transform infrared spectroscopy ( FTIR ), Atomic force microscopy ( AFM ) and X-ray diffraction ( XRD ) analysis. From the FTIR spectra the various groups present in the Zein blend were monitored. The homogeneity, morphology and crystallinity of the blends were ascertained from the AFM and XRD data, respectively. The thermal resistant of the zein nanocomposite films improved as the nanocellulose content increased. These obtained materials are transparent, flexible and present significantly better physical properties than the corresponding unfilled Zein films.

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Design of a low-cost laser CUT-OFF filters using carmine dye-doped PVA polymeric composite films

Results in Physics ◽

10.1016/j.rinp.2020.103203 ◽

2020 ◽

Vol 18 ◽

pp. 103203 ◽

Cited By ~ 2

Author(s):

Z.A. Alrowaili ◽

Mohammed Ezzeldien ◽

M.I. Mohammed ◽

I.S. Yahia

Keyword(s):

Low Cost ◽

Composite Films ◽

Polymeric Composite

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Mechanical and antibacterial properties of ZnO/chitosan bio-composite films

Journal of Polymer Engineering ◽

10.1515/polyeng-2021-0143 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Ayse Kalemtas ◽

Hasan B. Kocer ◽

Ahmet Aydin ◽

Pinar Terzioglu ◽

Gulsum Aydin

Keyword(s):

Particle Size ◽

Food Packaging ◽

Mechanical Test ◽

Composite Films ◽

Antibacterial Properties ◽

Chitosan Film ◽

Antibacterial Activities ◽

Diffusion Method ◽

Zno Powders ◽

Solution Casting Method

Abstract In the current study, ZnO/chitosan bio-composite films were produced via solution-casting method. Two different ZnO powders, micrometer (d50 ≅ 1.5 μm) and nanometer sized (d50 ≅ 100 nm), were used to investigate the effect of ZnO particle size and concentration (0, 2, and 8% w/w of chitosan) on the mechanical and antibacterial properties of the ZnO/chitosan bio-composite films. The incorporation of the ZnO powders into the chitosan film resulted in an increase in the tensile strength (TS) and a decrease in the elongation at break (EB) values. Mechanical test results revealed that TS and EB properties were considerably affected (p < 0.05) by the concentration and particle size of the ZnO reinforcement. Disc diffusion method demonstrated good antibacterial activities of bio-composite films containing high amount of ZnO (8% w/w of chitosan) against Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, and Bacillus subtilis. The growth-limiting effect of the films was more pronounced for S. aureus and K. pneumoniae. Due to enhanced TS and imparted antibacterial activity of the produced ZnO/chitosan bio-composite films, these materials are promising candidates for applications such as food packaging, wound dressing, and antibacterial coatings for various surfaces.

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