Packaging Sector Research Articles

Biobased ternary films of thermoplastic starch, bacterial nanocellulose and gallic acid for active food packaging

The use of active packaging technologies and biopolymeric materials are among the emerging trends for implementation of sustainability in the food packaging industry. Thus, herein, bioactive transparent nanocomposite films of thermoplastic starch (TPS) reinforced with bacterial nanocellulose (BNC) (1%, 5% and 10% w/w, relative to starch) and enriched with gallic acid (GA) (1 and 1.5% w/w, relative to starch) were prepared by the solvent casting method. The addition of BNC (≥5% w/w) and GA (1 and 1.5% w/w) enhanced both the mechanical properties (Young's Modulus: 1.2–2.0 GPa vs. 1.0 GPa for TPS; tensile strength: 23–39 MPa vs. 20 MPa for TPS) and the water resistance (moisture absorption and solubility in water) of the nanocomposites. All films are thermally stable up to 125 °C. It was also found that the addition of GA imparted the hydrocolloid TPS-BNC nanocomposites with UV-blocking properties and antioxidant activity (DPPH scavenging activity above 80%). In addition, the film with 10% w/w of BNC nanofibers and 1% w/w of GA had good oxygen barrier properties with a coefficient of permeability of 0.91 ± 0.12 cm3 μm m−2 d−1 kPa−1 and antibacterial activity against the gram-positive Staphylococcus aureus (reduction of about 4.5 log10 colony forming units (CFU) mL−1 after 48 h). This is the first time that antibacterial activity is reported for TPS-BNC nanocomposites. The film with 10% w/w of BNC nanofibers and 1% w/w of GA was further demonstrated to have the ability of delaying the browning and weight loss of packaged fresh cut apple stored at +4 °C for 7 days. All these outcomes are of great relevance for the packaging sector, thus attesting the potential of the developed TPS-BNC-GA nanocomposites as sustainable and eco-friendly film materials for active food packaging.

Fully Biobased Polyhydroxyalkanoate/Tannin Films as Multifunctional Materials for Smart Food Packaging Applications.

Fully biobased and biodegradable materials have attracted a growing interest in the food packaging sector as they can help to reduce the negative impact of fossil-based plastics on the environment. Moreover, the addition of functionalities to these materials by introducing active molecules has become an essential requirement to create modern packaging able to extend food's shelf-life while informing the consumer about food quality and freshness. In this study, we present an innovative bioplastic formulation for food packaging based on poly(hydroxybutyrate-co-valerate) (PHBV) and tannins as multifunctional additives. As a proof of concept, PHBV/tannin films were prepared by solvent casting, increasing the tannin content from 1 to 10 per hundred of resin (phr). Formic acid was used to reach a homogeneous distribution of the hydrophilic tannins into hydrophobic PHBV, which is remarkably challenging by using other solvents. Thanks to their well-known properties, the effect of tannins on the antioxidant, UV protection, and gas barrier properties of PHBV was evaluated. Samples containing 5 phr bioadditive revealed the best combination of these properties, also maintaining good transparency. Differential scanning calorimetry (DSC) investigations revealed that films are suitable for application from the fridge to potentially high temperatures for food heating (up to 200 °C). Tensile tests have also shown that Young's modulus (900-1030 MPa) and tensile strength (20 MPa) are comparable with those of the common polymers and biopolymers for packaging. Besides the improvement of the PHBV properties for extending food's shelf-life, it was also observed that PHBV/tannin could colorimetrically detect ammonia vapors, thus making this material potentially applicable as a smart indicator for food spoilage (e.g., detection of fish degradation). The presented outcomes suggest that tannins can add multifunctional properties to a polymeric material, opening up a new strategy to obtain an attractive alternative to petroleum-based plastics for smart food packaging applications.

A Comprehensive Review on Significance and Advancements of Antimicrobial Agents in Biodegradable Food Packaging.

Food waste is key global problem and more than 90% of the leftover waste produced by food packaging factories is dumped in landfills. Foods packaged using eco-friendly materials have a longer shelf life as a result of the increased need for high-quality and secure packaging materials. For packaging purposes, natural foundation materials are required, as well as active substances that can prolong the freshness of the food items. Antimicrobial packaging is one such advancement in the area of active packaging. Biodegradable packaging is a basic form of packaging that will naturally degrade and disintegrate in due course of time. A developing trend in the active and smart food packaging sector is the use of natural antioxidant chemicals and inorganic nanoparticles (NPs). The potential for active food packaging applications has been highlighted by the incorporation of these materials, such as polysaccharides and proteins, in biobased and degradable matrices, because of their stronger antibacterial and antioxidant properties, UV-light obstruction, water vapor permeability, oxygen scavenging, and low environmental impact. The present review highlights the use of antimicrobial agents and nanoparticles in food packaging, which helps to prevent undesirable changes in the food, such as off flavors, colour changes, or the occurrence of any foodborne outcomes. This review attempts to cover the most recent advancements in antimicrobial packaging, whether edible or not, employing both conventional and novel polymers as support, with a focus on natural and biodegradable ingredients.

State-of-the-Art Insights and Potential Applications of Cellulose-Based Hydrogels in Food Packaging: Advances towards Sustainable Trends

Leveraging sustainable packaging resources in the circular economy framework has gained significant attention in recent years as a means of minimizing waste and mitigating the negative environmental impact of packaging materials. In line with this progression, bio-based hydrogels are being explored for their potential application in a variety of fields including food packaging. Hydrogels are three-dimensional, hydrophilic networks composed of a variety of polymeric materials linked by chemical (covalent bonds) or physical (non-covalent interactions) cross-linking. The unique hydrophilic nature of hydrogels provides a promising solution for food packaging systems, specifically in regulating moisture levels and serving as carriers for bioactive substances, which can greatly affect the shelf life of food products. In essence, the synthesis of cellulose-based hydrogels (CBHs) from cellulose and its derivatives has resulted in hydrogels with several appealing features such as flexibility, water absorption, swelling capacity, biocompatibility, biodegradability, stimuli sensitivity, and cost-effectiveness. Therefore, this review provides an overview of the most recent trends and applications of CBHs in the food packaging sector including CBH sources, processing methods, and crosslinking methods for developing hydrogels through physical, chemical, and polymerization. Finally, the recent advancements in CBHs, which are being utilized as hydrogel films, coatings, and indicators for food packaging applications, are discussed in detail. These developments have great potential in creating sustainable packaging systems.

Plant-Mediated Synthesis of Mono- and Bimetallic (Au–Ag) Nanoparticles: Future Prospects for Food Quality and Safety

The environmental, economic, and operational limits associated with the physical, chemical, and microbiological techniques for the production of nanoparticles (NPs) are the principal obstructions to their rapid commercial applications in various fields including food packaging and sensing to ensure food quality and safety. Over the years, many reports revealed that the nanotechnological (metal-based NPs) application facilitates an alternate, interactive, reliable, as well as simple technology in the food industries and packaging sector. In this review, we summarized the usage of plant extract for the biosynthesis of bimetallic (Au–Ag) and monometallic counterpart NPs. Further, the impact of reaction conditions and identification of reactive phytochemicals with the reaction mechanism of these nanoparticles was reviewed. The recent progress on the applications of Ag, Au, or Au–Ag NPs in food quality analysis and food packaging was comprehensively discussed. The safety aspect of the nanoparticles for food sector use was also briefly stated.

Starch Nanocrystal and its Food Packaging Applications

Food packaging is a crucial medium for protecting food from contamination, and spoilage by intrinsic and extrinsic factors. Nevertheless, for the past two decades, packaging materials have become environmental concern due to their disposal challenges. Starch is an eco-friendly packaging alternative, and it possesses outstanding degradability and reproducibility. The objective of this review is to examine the different methods used for the synthesis of nanostarch and expose their food packaging applications. Major sources of bibliometric information such as Web of Science, Scopus, PubMed, and Google Scholar were extensively searched with keywords such as starch, nano starch, starch nanocrystal, bio-composite film, acid hydrolysis, cassava starch, maize starch, edible film etc., to obtain a database of 272 papers. Thirty-nine publications met the criteria for review. The application of biopolymers such as starch, protein, and cellulose in the manufacturing of biodegradable films is an innovative approach. Starch is considered a promising biopolymer owing to its low cost, biodegradability, diversity, and availability. Currently, nanotechnology has received a lot of importance in the food packaging sector. Biodegradable nanocomposite packaging is an innovative technique to wrap food for enhanced shelf-life. Numerous food components are employed in the development of nanoparticles which includes proteins, starch, lipids, and polysaccharides. Nanostarch has certain unique properties such as being biocompatible, less expensive, biodegradable, sustainable, and eco-friendly nature. At present, nanostarch based packaging is prepared by mixing starch and non-starch polymers such as chitosan, cellulose, gelatin, whey protein etc. to increase mechanical property. Hence, the preparation of starch nanocrystals-based packaging material presents a substantial improvement in barrier properties, tensile strength, elastic modulus and food quality, and shelf life. The present review gives a comprehensive understanding of the synthesis and characterization of the starch nanocrystal, its food packaging application, sustainability, and regulatory aspects alongside new perspectives which is inadequate in the literature.

Advances in the Food Packaging Production from Agri-Food Waste and By-Products: Market Trends for a Sustainable Development

Agricultural waste has been a prominent environmental concern due to its significant negative impact on the environment when it is incinerated, disposed of in landfills, or burned. These scenarios promoted innovations in the food packaging sector using renewable resources, namely agri-food waste and by-products such as bagasse, pulps, roots, shells, straws, and wastewater for the extraction and isolation of biopolymers that are later transformed into packaging materials such as bioplastics, biofilms, paper, and cardboards, among others. In this context, the circular bioeconomy (CBE) model is shown in the literature as a viable alternative for designing more sustainable production chains. Moreover, the biorefinery concept has been one of the main links between the agri-food chain and the food packaging industry. This review article aimed to compile recent advances in the food packaging field, presenting main industrial and scientific innovations, economic data, and the challenges the food packaging sector has faced in favor of sustainable development.

A screen-printed electrode modified with gold nanoparticles/cellulose nanocrystals for electrochemical detection of 4,4′-methylene diphenyl diamine

Developing simple, cost-effective, easy-to-use, and reliable analytical devices if of utmost importance for the food industry for rapid in-line checks of their products that must comply with the provisions set by the current legislation. The purpose of this study was to develop a new electrochemical sensor for the food packaging sector. More specifically, we propose a screen-printed electrode (SPE) modified with cellulose nanocrystals (CNCs) and gold nanoparticles (AuNPs) for the quantification of 4,4′-methylene diphenyl diamine (MDA), which is one of the most important PAAs that can transfer from food packaging materials into food stuffs. The electrochemical performance of the proposed sensor (AuNPs/CNCs/SPE) in the presence of 4,4′-MDA was evaluated using cyclic voltammetry (CV). The modified AuNPs/CNCs/SPE showed the highest sensitivity for 4,4′-MDA detection, with a peak current of 9.81 μA compared with 7.08 μA for the bare SPE. The highest sensitivity for 4,4′-MDA oxidation was observed at pH = 7, whereas the detection limit was found at 57 nM and the current response of 4,4′-MDA rose linearly as its concentration increased from 0.12 μM to 100 μM. Experiments using real packaging materials revealed that employing nanoparticles dramatically improved both the sensitivity and the selectivity of the sensor, which can be thus considered as a new analytical tool for quick, simple, and accurate measurement of 4,4′-MDA during converting operations.

Experimental study on partial replacement of fine aggregate by Expanded polystyrene beads in concrete

In the world of construction, concrete is the most crucial component. The construction industry's growing search for environmentally friendly and sustainable materials has prompted research on using some waste materials to partially replace the traditional components of concrete. Expanded Polystyrene (EPS), a non-biodegradable waste product from the packaging sector, is used in our project work. In order to reduce the concrete's self-weight, design must be based on density. Concrete that is lightweight and capable of achieving a dependable, respectable compressive strength can be made by partially or entirely substituting the expanded polystyrene with normal aggregates. Substitution of different eps bead percentages in accordance with desired design elements for various proportions. To determine concrete's mechanical and physical characteristics at ages (7), (14) and (28) days, several tests were performed on fresh and hardened concrete. The findings shows that as the quantity of EPS increases, concrete's strength would decrease as the density is decreased.

Importance of Emerging Technologies in Processing and Preservation of Seafood

This review provides information about the type of emerging technologies used for the processing and packaging of seafood. The quality of food is always a top priority and a farm-to-fork process which is designed and implemented to get highly safe food. The success factor for the process includes the time, temperature, and chemical reactions involved in different stages of the processing and packaging. Moreover, unwanted changes in the product would have to be minimized to obtain final products of desirable quality over time. Seafood is widely used and exported in different countries which comes with potent health hazards. To control these hazards, emerging technologies came into existence which are now being applied in the packaging sector for seafood. These technologies were discussed in this work.

Analysis of the aging and stabilization processes in cyclic polyolefins containing various natural or synthetic stabilizers

The aim of this research was to perform a new evaluation of stabilizers dedicated to ethylene-norbornene copolymer (EN). The aging and stabilization processes of the EN polymer filled with natural (xanthone, naringenin) or synthetic (Rianox 626, Rianox 1726, Rianox 3114) antioxidants with different chemical structure were thoroughly analyzed and the suitability of the methods described in the literature to study these processes was assessed. EN is successfully used in optics, electronics or packaging sectors, but like any other organic material, it will degrade under the influence of environmental factors. The EN films were subjected to thermo- and photooxidation for 150, 300, 450, and 600 h. We observed that all composites exhibited an excellent resistance to thermo-oxidation, but as expected, much greater differences were noted after exposure to ultraviolet radiation. The performed tests: thermal analysis, FTIR spectroscopy, contact angles determination, color change measurements, static and dynamical mechanical tests proved the high effectiveness of the used antioxidants for the EN stabilization. However, in the case of the EN-xanthone sample, during the FTIR analysis, a higher value of the carbonyl index in comparison with the reference EN was obtained, and a greater change in the glass transition temperature (Tg) compared to the other used stabilizers was observed. These changes could be caused by xanthone oxidation on the polymer surface and its plasticization because of aging, as evidenced by the increased Tg value. In addition, we also discussed possible stabilization mechanisms of EN through the use of selected antioxidants. Interestingly, based on the obtained results, Rianox 626 containing phosphite groups in its structure turned out to be the most effective stabilizer for the ethylene-norbornene copolymer, even though it is a secondary antioxidant. It can therefore be suggested that the propagation stage plays a leading role in the degradation of this polymer, in which antioxidants decompose hydroperoxides. In the case of Rianox 626, phosphite groups reacted with hydroperoxides, thus creating the phosphate form of this stabilizer and alcohols, which are more stable and non-radical products.

Development and characterization of tapioca starch/pectin composite films incorporated with broccoli leaf polyphenols and the improvement of quality during the chilled mutton storage

This study aimed at the composition of active packaging film from tapioca starch/pectin (TSP) incorporated with broccoli leaf polyphenols (BLP) was prepared and applied to improve the qualities of the chilled mutton during storage. The results indicated the addition of BLP significantly improved the thickness, density, barrier ability, mechanical properties, water solubility and antioxidant activity of the composite films while inducing decreases in the brightness (p < 0.05), enhancing inter-molecular interactions of TSP + BLP composite films. The WVP, oxygen permeability and elongation at break of the composite film reached the minimum when BLP concentration was 3 % while exhibiting the highest tensile strength and the best performance. This composite film delayed microbial growth and minimized oxidative rancidity during chilled mutton storage, causing the improvement of its quality and extending its shelf life to 12 days. Therefore, TSP + BLP composite films possessed the promise to be applied as bioactive materials in food packaging sectors.

Plastics in the global environment assessed through material flow analysis, degradation and environmental transportation

Knowledge on environmental plastic emission and spatial and temporal accumulation is vital for the development of successful mitigation strategies and risk assessments of plastics. In this study, emissions of both micro and macro plastic from the plastic value chain to the environment were assessed on a global level through a mass flow analysis (MFA). All countries, 10 sectors, 8 polymers and 7 environmental compartments (terrestrial, freshwater or oceanic) are distinguished in the model. The results assess a loss of 0.8 million tonnes (mt) of microplastics and 8.7 mt of macroplastics to the global environment in 2017. This is respectively 0.2 % and 2.1 % of plastics produced in the same year. The packaging sector contributed most for macroplastic emissions, and tyre wear for microplastic emissions. With the MFA results, accumulation, degradation and environmental transportation are considered in the Accumulation and dispersion model (ADM) until 2050. This model predicts macro- and microplastic accumulation in the environment to 2.2 gigatonnes (Gt) and 3.1 Gt in 2050 respectively (scenario: yearly consumption increase of 4 %). This will be 30 % less when a yearly production reduction of 1 % until 2050 is modeled to 1.5 and 2.3 Gt macro and microplastics respectively. Almost 2.15 Gt of micro and macroplastics accumulate in the environment until 2050 with zero plastic production after 2022 due to leakage from landfills and degradation processes. Results are compared to other modeling studies quantifying plastic emissions to the environment. The current study predicts lower emissions to ocean and higher emissions to surface waters like lakes and rivers. Non aquatic, terrestrial compartments are observed to accumulate most plastics emitted to the environment. The approach used results in a flexible and adaptable model that addresses plastic emissions to the environment over time and space, with detail on country level and environmental compartments.

Natural Polymers and Cosmeceuticals for a Healthy and Circular Life: The Examples of Chitin, Chitosan, and Lignin

The present review considers the design and introduction of new cosmeceuticals in the market, based on natural polymers and active molecules extracted from biomass, in a biomimetic strategy, starting with a consideration of the biochemical mechanisms, followed by natural precision biopolymer production. After introducing the contest of nanobiotechnology in relationship with its applicability for skin contact products and classifying the currently available sustainable polymers, some widely selected abundant biopolymers (chitin, chitosan, and lignin), showing specific functionalities (anti-microbial, anti-oxidant, anti-inflammatory, etc.), are described, especially considering the possibility to combine them in nanostructured tissues, powders, and coatings for producing new cosmeceuticals, but with potentialities in other sectors, such as biomedical, personal care, and packaging sectors. After observing the general increase in market wellness and beauty forecasts over the next few years, parallelisms between nano and macro scales have suggested that nanobiotechnology application expresses the necessity to follow a better way of producing, selecting, and consuming goods that will help to transform the actual linear economy in a circular economy, based on redesigning, reducing, recycling, and reusing.

Use of Feeder Tanks and Self-Cleaning Nozzles for Glue Systems to Maximize Productivity and Reduce Downtime in the Packaging Industry

In the overall packaging sector, whether it is for the food or beverage industry, apparel industry, or retail industry, the goal is to deliver high-quality untampered products to consumers by ensuring that the package is intact and remains secure during production, transportation from the production line to a warehouse or from warehouse to distribution centers. To deliver products at this highest level of quality, any packaging company must research and select the best glue/adhesive system available in the market for their production lines. In this theoretical paper, we review the technologies available in the field of glue systems and the challenges faced by the companies that lead to production loss, higher operational costs, recall, and reworks. The study aims to perform a root cause analysis of the issues faced, like missing beads of glue on the packages and blockage of nozzles, to provide solutions using the new technology of using a feeder tank fill system for glue units and the use of self-cleaning nozzles to eliminate them. This paper also illustrates the advantages of utilizing this new technology and its impact on production lines.

Enhancing Packaging Sustainability with Natural Fiber Reinforced Biocomposites: An outlook into the future

Packaging across diverse sectors like food, FMCG products, pharmaceuticals, cosmetics, and electronics predominantly relies on petroleum-based materials. These petroleum-based non-renewable resources significantly impact the environment throughout their life cycle, emitting polluting gases, demanding energy-intensive manufacturing, and causing air, water, and land pollution during disposal. These problems can be minimized by using eco-friendly materials such as materials made from natural fibres, and agricultural waste that is biodegradable in nature. Natural fibre-reinforced biocomposite materials have a high potential to be used in sustainable packaging applications due to their lower environmental impact compared to petroleum-based materials. However, the use of biocomposites is very limited in the packaging sector and growing exponentially. Recently, agriculture waste fibres have been used for the development of various biocomposites-based packaging. In this paper, prior work has been analysed to identify the impact associated with petroleum-based packaging materials, advantages and potential of natural fiber-reinforced biocomposites in the packaging sector, manufacturing techniques, recent development, challenges, and prospects have been discussed.

NEW ADVANCES IN SMART PACKAGING PRODUCTION METHODS

The Consumer wants and demands longer life expectancy in food and beverage to adapt to the changing global trends. Food packing technology is used to pack the food to maintain quality and avoid contamination. The food business has seen significant advancements in the packaging sector, with the majority of active and intelligent improvements occurring in food manufacturing, and packaging innovation. Active and intelligent packaging is a new and fascinating area of technology that has a positive impact on today's consumer needs. Active packaging technology is used for producing high-quality food products with safer packing techniques. This will support the food to endure the environment and expand its lifetime. Whereas an intelligent packing system uses sensors, indicators &amp; other carriers which are used to monitor the product condition and its current state during transit. This article presents a quick analysis of the food-packing technologies that are widely implemented.

Antibacterial, Antioxidant, and in silico NADPH Oxidase Inhibition Studies of Essential Oils of Lavandula dentata against Foodborne Pathogens.

Food is always subjected to microbial infection and lipid peroxidation, which frequently leads to serious food intoxications. In the present study, essential oils (EOs) extracted from Lavandula dentata Moroccan species and its major component (linalool) were chemically characterized and their antioxidant potential and antibacterial properties against foodborne pathogenic bacteria were examined. EOs phytochemical profile was carried out using gas chromatography-mass spectrometry analysis (GC-MS). The antioxidant potential was evaluated, in vitro, by use of the β-carotene discoloration assay and in silico vs. NADPH oxidase enzymatic complex as an antioxidant marker. The antibacterial proprieties were assessed by use of minimal inhibitory concentration (MIC) and disc diffusion methods, against Gram (-) bacteria (Pseudomonas aeruginosa, Salmonella enterica, and Escherichia coli) and Gram (+) bacteria (Bacillus subtilis and Staphylococcus aureus). Linalool (49.71%) was the major component among the eighteen components identified in Lavandula dentate EO, followed by camphor (14.36%) and borneol (8.21%). The studied EO and linalool compounds showed important antioxidant activity through the β-carotene discoloration test with IC50 values of 35.72 ± 1.21 mg/mL and 30.32 ± 1.23 mg/mL, respectively. Among all the analyzed compounds of lavender EOs, thymol, carvacrol, and α-terpineol were the most active compounds against NADPH oxidase with a glide score of -6.483, -6.17, and -4.728 kcal/mol, respectively. 2D and 3D views showed the formation of hydrogen bonds between the most active compounds and the active site of NADPH oxidase. The antibacterial data showed a significant activity of Lavandula dentata essences against tested foodborne pathogenic bacteria, especially against S. aureus and B. subtilis. Linalool proved active toward the same bacteria and had closer activity to that of lavender essential oil. In light of the obtained findings, the essential oil of Lavandula dentata Moroccan species can be used in the packaging sector as a promising natural food conservative to limit lipid oxidation and treat foodborne infections.

Circular solutions for food packaging. Innovative coated paper packaging and its carbon footprint

Purpose: The strive towards circularity within the packaging sector has been an ever-growing challenge. Regular paper seem to be a good solution due to its natural and renewable origins and relative ease in its end-of-life processing. Food products require defined barrier and mechanical properties and seal functions that cannot be provided by regular paper or cardboard. The underlying objective of the paper is to indicate the best scenarios with regard to circularity challenge. Possibly, the implementation of innovative, highly functional, and recyclable coated paper/cardboard materials for food packaging applications would allow to replace traditional multi-layered plastics. Design/methodology/approach: The objective of the paper is to verify the environmental performance of selected coated paper material over its counterparts from multi-layered plastics with the use of the Carbon Footprint approach (CF). CF is used to compare the environmental impacts of a chocolate tablet life cycle with the use of different packaging materials: coated paper (CPCS) and oriented polypropylene (oPP). A special focus is on the recyclability issue of the packaging materials and their contribution to overall environmental performance. Findings: The results show that CPCS packaging has a slightly lower CF. Overall, CPCS packaging is contributing half of CF in comparison to oPP packaging. The difference is higher as far as packaging manufacturing is concerned, but due to the higher weight of CPCS packaging for chocolate tablets, its contribution to CF in whole life cycle rises. Research limitations/implications: Since the assessment is made during the packaging testing process, its results are not yet final and could be due to change if the composition of CPCS will due to some further changes. Secondly, the shelf life tests are not finished yet and do not impact the life cycle so far. Originality/value: The study is focused on the assessment of innovative coated paper packaging and investigates its CF in comparison to currently used packaging material for chocolate tablets. Its results could contribute to the selection of more sustainable and circular packaging. Keywords: coated paper materials, food packaging, carbon footprint (CF), circular economy, life cycle management. Category of the paper: research paper.

Fabrication of novel gallic acid functionalized chitosan/pullulan active bio-films for the preservation and shelf-life extension of green chillies

The fabricated novel bio-active composite films extended the shelf-life of green chillies up to 18 days without affecting their quality. The results suggesting that the fabricated films have potential to be implemented in the food packaging sector.