scholarly journals High-Throughput Fabrication of Antibacterial Starch/PBAT/AgNPs@SiO2 Films for Food Packaging

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3062
Author(s):  
Shengxue Zhou ◽  
Xiaosong Zhai ◽  
Rui Zhang ◽  
Wentao Wang ◽  
Loong-Tak Lim ◽  
...  
Keyword(s):  
High Throughput ◽  
Food Packaging ◽  
Composite Films ◽  
Barrier Properties ◽  
Production Method ◽  
Antibacterial Activities ◽  
Surface Hydrophobicity ◽  
Commercial Application ◽  
Packaging Materials ◽  
Escherichia Coli Bacteria

In this current work, antimicrobial films based on starch, poly(butylene adipate-co-terephthalate) (PBAT), and a commercially available AgNPs@SiO2 antibacterial composite particle product were produced by using a melt blending and blowing technique. The effects of AgNPs@SiO2 at various loadings (0, 1, 2, 3, and 4 wt%) on the physicochemical properties and antibacterial activities of starch/PBAT composite films were investigated. AgNPs@SiO2 particles were more compatible with starch than PBAT, resulting in preferential distribution of AgNPs@SiO2 in the starch phase. Infusion of starch/PBAT composite films with AgNPs@SiO2 marginally improved mechanical and water vapor barrier properties, while surface hydrophobicity increased as compared with films without AgNPs@SiO2. The composite films displayed superior antibacterial activities against both Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria. The sample loaded with 1 wt% AgNPs@SiO2 (SPA-1) showed nearly 90% inhibition efficiency on the tested microorganisms. Furthermore, a preliminary study on peach and nectarine at 53% RH and 24 °C revealed that SPA-1 film inhibited microbial spoilage and extended the product shelf life as compared with SPA-0 and commercial LDPE packaging materials. The high-throughput production method and strong antibacterial activities of the starch/PBAT/AgNPs@SiO2 composite films make them promising as antimicrobial packaging materials for commercial application.

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

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.

scholarly journals Hybrid Biocomposites Based on Poly(Lactic Acid) and Silica Aerogel for Food Packaging Applications

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4910 ◽  
Author(s):  
Alejandro Aragón-Gutierrez ◽  
Marina P. Arrieta ◽  
Mar López-González ◽  
Marta Fernández-García ◽  
Daniel López
Keyword(s):  
Thermal Stability ◽  
Lactic Acid ◽  
Silica Aerogel ◽  
Food Packaging ◽  
Mechanical Performance ◽  
Composite Films ◽  
Barrier Properties ◽  
Extrusion Process ◽  
Poly Lactic Acid ◽  
Barrier Performance

Bionanocomposites based on poly (lactic acid) (PLA) and silica aerogel (SiA) were developed by means of melt extrusion process. PLA-SiA composite films were plasticized with 15 wt.% of acetyl (tributyl citrate) (ATBC) to facilitate the PLA processability as well as to attain flexible polymeric formulations for films for food packaging purposes. Meanwhile, SiA was added in four different proportions (0.5, 1, 3 and 5 wt.%) to evaluate the ability of SiA to improve the thermal, mechanical, and barrier performance of the bionanocomposites. The mechanical performance, thermal stability as well as the barrier properties against different gases (carbon dioxide, nitrogen, and oxygen) of the bionanocomposites were evaluated. It was observed that the addition of 3 wt.% of SiA to the plasticized PLA-ATBC matrix showed simultaneously an improvement on the thermal stability as well as the mechanical and barrier performance of films. Finally, PLA-SiA film formulations were disintegrated in compost at the lab-scale level. The combination of ATBC and SiA sped up the disintegration of PLA matrix. Thus, the bionanocomposites produced here show great potential as sustainable polymeric formulations with interest in the food packaging sector.

scholarly journals Preparation and Characterization of Carboxymethyl Cellulose-Based Bioactive Composite Films Modified with Fungal Melanin and Carvacrol

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 499
Author(s):  
Łukasz Łopusiewicz ◽  
Paweł Kwiatkowski ◽  
Emilia Drozłowska ◽  
Paulina Trocer ◽  
Mateusz Kostek ◽  
...  
Keyword(s):  
Water Vapour ◽  
Carboxymethyl Cellulose ◽  
Food Packaging ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Composite Films ◽  
Barrier Properties ◽  
Good Potential ◽  
Fungal Melanin ◽  
Spectroscopy Studies

Preparation of biodegradable packaging materials and valorisation of food industry residues to achieve “zero waste” goals is still a major challenge. Herein, biopolymer-based (carboxymethyl cellulose—CMC) bioactive films were prepared by the addition, alone or in combination, of carvacrol and fungal melanin isolated from champignon mushroom (Agaricus bisporus) agro-industrial residues. The mechanical, optical, thermal, water vapour, and UV-Vis barrier properties were studied. Fourier-transform infrared (FT-IR) spectroscopy studies were carried out to analyse the chemical composition of the resulting films. Antibacterial, antifungal, and antioxidant activities were also determined. Both CMC/melanin and CMC/melanin/carvacrol films showed some antimicrobial activity against Escherichia coli, Staphylococcus aureus, and Candida albicans. The addition of melanin increased the UV-blocking, mechanical, water vapour barrier, and antioxidant properties without substantially reducing the transparency of the films. The addition of carvacrol caused loss of transparency, however, composite CMC/melanin/carvacrol films showed excellent antioxidant activity and enhanced mechanical strength. The developed bioactive biopolymer films have a good potential to be green bioactive alternatives to plastic films in food packaging applications.

scholarly journals Properties of Whey-Protein-Coated Films and Laminates as Novel Recyclable Food Packaging Materials with Excellent Barrier Properties

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Markus Schmid ◽  
Kerstin Dallmann ◽  
Elodie Bugnicourt ◽  
Dario Cordoni ◽  
Florian Wild ◽  
...  
Keyword(s):  
Whey Protein ◽  
Barrier Layer ◽  
Food Packaging ◽  
Mechanical Load ◽  
Barrier Properties ◽  
Packaging Materials ◽  
Renewable Materials ◽  
Multilayer Material ◽  
Ethylene Vinyl Alcohol ◽  
Barrier Materials

In case of food packaging applications, high oxygen and water vapour barriers are the prerequisite conditions for preserving the quality of the products throughout their whole lifecycle. Currently available polymers and/or biopolymer films are mostly used in combination with barrier materials derived from oil based plastics or aluminium to enhance their low barrier properties. In order to replace these non-renewable materials, current research efforts are focused on the development of sustainable coatings, while maintaining the functional properties of the resulting packaging materials. This article provides an introduction to food packaging requirements, highlights prior art on the use of whey-based coatings for their barriers properties, and describes the key properties of an innovative packaging multilayer material that includes a whey-based layer. The developed whey protein formulations had excellent barrier properties almost comparable to the ethylene vinyl alcohol copolymers (EVOH) barrier layer conventionally used in food packaging composites, with an oxygen barrier (OTR) of <2 [cm³(STP)/(m²d bar)] when normalized to a thickness of 100 μm. Further requirements of the barrier layer are good adhesion to the substrate and sufficient flexibility to withstand mechanical load while preventing delamination and/or brittle fracture. Whey-protein-based coatings have successfully met these functional and mechanical requirements.

scholarly journals Edible Films on Meat and Meat Products

Coatings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1344
Author(s):  
Dong-Heon Song ◽  
Van Ba Hoa ◽  
Hyoun Wook Kim ◽  
Sun Moon Khang ◽  
Soo-Hyun Cho ◽  
...  
Keyword(s):  
Meat Products ◽  
Meat Consumption ◽  
Antibacterial Activities ◽  
Edible Films ◽  
Commercial Application ◽  
Packaging Materials ◽  
Meat Processing ◽  
Plastic Packaging ◽  
Long Time ◽  
Isolated Soy Protein

In 2018, the worldwide consumption of meat was 346.14 million tonnes, and this is expected to increase in the future. As meat consumption increases, the use of packaging materials is expected to increase along with it. Petrochemical packaging materials which are widely used in the meat processing industry, take a long time to regenerate and biodegrade, thus they adversely affect the environment. Therefore, the necessity for the development of eco-friendly packaging materials for meat processing, which are easily degradable and recyclable, came to the fore. The objective of this review is to describe the application of natural compound-derived edible films with their antioxidant and antibacterial activities in meat and meat products. For several decades, polysaccharides (cellulose, starch, pectin, gum, alginate, carrageenan and chitosan), proteins (milk, collagen and isolated soy protein) and lipids (essential oil, waxes, emulsifiers, plasticizers and resins) were studied as basic materials for edible films to reduce plastic packaging. There are still high consumer demands for eco-friendly alternatives to petrochemical-based plastic packaging, and edible films can be used in a variety of ways in meat processing. More efforts to enhance the physiological and functional properties of edible films are needed for commercial application to meat and meat products.

PVA/starch/propolis/anthocyanins rosemary extract composite films as active and intelligent food packaging materials

2019 ◽  
Vol 40 (1) ◽  
Author(s):  
Pakeeza Mustafa ◽  
Muhammad B. K. Niazi ◽  
Zaib Jahan ◽  
Ghufrana Samin ◽  
Arshad Hussain ◽  
...  
Keyword(s):  
Food Packaging ◽  
Composite Films ◽  
Rosemary Extract ◽  
Packaging Materials ◽  
Food Packaging Materials

Materials for food packaging applications based on bio-based polymer nanocomposites

2015 ◽  
Vol 30 (2) ◽  
pp. 143-173 ◽  
Author(s):  
Seyed Ahmad Attaran ◽  
Azman Hassan ◽  
Mat Uzir Wahit
Keyword(s):  
Polymer Nanocomposites ◽  
Food Packaging ◽  
Layered Silicate ◽  
Barrier Properties ◽  
Packaging Materials ◽  
Natural Polymer ◽  
Plastic Packaging ◽  
Aspect Ratios ◽  
Nanoparticle Surface ◽  
Silicate Nanocomposites

Concerns about environmental waste problems caused by non-biodegradable petrochemical-based plastic packaging materials as well as consumer demand for high-quality food products have led to increased interest in the development of biodegradable packaging materials using annually renewable natural biopolymers. Inherent shortcomings of natural polymer-based packaging materials such as low mechanical properties and low barrier properties can be recovered by applying nanocomposite technology. Polymer nanocomposites, especially natural biopolymer-layered silicate nanocomposites, exhibit markedly improved packaging properties due to large nanoparticle surface area and their significant aspect ratios. Additionally, natural biopolymer is susceptible to microorganisms, resulting in good biodegradability, which is one of the most promising aspects of its incorporation in packaging materials and industries. The present review article explains the various categories of nanoclay and bio-based polymer-based composites with particular regard to their application as packaging materials. It also gives an overview of the most recent advances and emerging new aspects of nanotechnology for development of composites for environmentally compatible food packaging materials.

Sign in / Sign up

Export Citation Format

Share Document