Recent Advances in Lipid Derived Bio-Based Materials for Food Packaging Applications

The utilization of lipids is presently in the spotlight of food industry as they are one of novel renewable and sustainable raw materials. Lipids derived materials are considered as a promising alternate to petro-based polymers as they are sustainable, biorenewable, biodegradable, and environmentally benign. These unique attributes draw the attention of scientific community for the use of lipids in food packaging applications with a potential to compete with fossil fuel derived polymers. This paper reviews recent advances in the use of lipids and their effect on the barrier, antimicrobial, antioxidant, and mechanical properties of films, coating and nanocomposites for food packaging applications. Modification of lipids and its chemical interactions with other biopolymers during processing for the synthesis of different materials are also discussed. Global patents and research trend in use of lipids for the preparation of biocomposites are also described. The role of lipids in the circular economy is highlighted and life cycle assessment of lipids derived products is outlined with examples. The review is concluded with synoptic view of existing and forthcoming potential use of lipids in various food packaging applications.     

塑料薄膜对食品安全的影响及控制措施

阐述了我国塑料食品包装薄膜的发展现状及对食品安全的影响的潜在因素。重点分析了目前我国现有的塑料食品包装薄膜的相关检测标准、检测方法及限量要求,并阐述了塑料食品包装薄膜中各类添加剂对食品卫生性能的影响,最后指出塑料食品包装薄膜对食品安全影响的控制措施。通过总结归纳目前我国塑料食品包装薄膜的发展趋势,为进一步规范塑料食品包装薄膜市场,保障食品安全提供指导。     

Cellulose nanofibrils in biobased multilayer films for food packaging

The aim of this study was to evaluate a thin, TEMPO‐oxidized (2,2,6,6‐tetramethylpiperidine‐1‐oxyl–mediated oxidation) cellulose nanofibril (CNF) coating as a barrier layer in multilayer packaging films together with biobased polyethylenes. The purpose was also to explore the possible interactions between food products and the biobased films, and to evaluate the feasibility of these films for packaging of dry foods. CNF provided the biobased multilayer films with an oxygen barrier suitable for both demanding food products and modified atmosphere packaging (MAP). The MAP pouches made of these multilayer films retained their atmosphere and shape and protected ground hazelnuts from further oxidation for the storage time used in this study. However, irradiation used to sterilize packed foods and aroma compounds from clove in particular impaired the oxygen barrier property of the CNF layer, while the water vapor barrier property of the multilayer films remained unaffected. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134, 44830.     

国内外塑料包装材料回收法律体系概况

介绍了中国和欧、美、日等发达国家塑料包装材料回收立法现状,其中包括回收塑料用于食品包装的概况。塑料包装工业要实现可持续发展,当务之急是加快包装材料回收立法,尤其是食品塑料包装回收立法工作。     

Structural Applications for Flexible Packaging: Innovations in Pouch Forms and Uses

Three facets of flexible packaging are discussed in this article: the basic forms of flexible packages, the applications in food packaging for each form, and structural combinations for different applications. The variety of packaging capabilities available to those who choose flexible packaging to fill product and consumer needs is illustrated. The basic forms of flexible packaging are first reviewed, and then some newer, innovative pouches and their application to the food industry are discussed.     

CAI在《食品包装学》上的应用

深入论述了食品包装学课程教学内容的特点。结合食品包装教学的实践,对CAI在食品包装学教学中的作用及应用中要注意的问题进行了阐述。以期使CAI课件与食品包装学教学能有机的结合,提高食品包装学的教学效果和教学质量。     

Selected Applications of Chitosan Composites

Chitosan is one of the emerging materials for various applications. The most intensive studies have focused on its use as a biomaterial and for biomedical, cosmetic, and packaging systems. The research on biodegradable food packaging systems over conventional non-biodegradable packaging systems has gained much importance in the last decade. The deacetylation of chitin, a polysaccharide mainly obtained from crustaceans and shrimp shells, yields chitosan. The deacetylation process of chitin leads to the generation of primary amino groups. The functional activity of chitosan is generally owed to this amino group, which imparts inherent antioxidant and antimicrobial activity to the chitosan. Further, since chitosan is a naturally derived polymer, it is biodegradable and safe for human consumption. Food-focused researchers are exploiting the properties of chitosan to develop biodegradable food packaging systems. However, the properties of packaging systems using chitosan can be improved by adding different additives or blending chitosan with other polymers. In this review, we report on the different properties of chitosan that make it suitable for food packaging applications, various methods to develop chitosan-based packaging films, and finally, the applications of chitosan in developing multifunctional food packaging materials. Here we present a short overview of the chitosan-based nanocomposites, beginning with principal properties, selected preparation techniques, and finally, selected current research.     

食品用塑料包装材料的安全性研究

针对常用的塑料包装材料及特性、食品用塑料包装材料主要安全问题、有关塑料包装材料检测标准和方法,分析塑料包装材料对食品安全的影响。     

食品包装材料--塑料薄膜的发展

简述了近几年食品包装材料—塑料薄膜的发展,通过分析各种食品的特性,选择最能满足该食品要求的包装材料,介绍了几种具有特殊功能的食品包装材料,指出今后我国塑料包装材料的发展方向。     

Development of ecofriendly active food packaging materials based on blends of cross-linked poly (vinyl alcohol) and Piper betle Linn. leaf extract

Development of active packaging materials for food preservation has been a topic of interest over the years. Herein we report the preparation and characterization of novel active films based on the combination of poly (vinyl alcohol) (PVA), maltodextrin, agar and Piper betle Linn. leaf extract (PBLLE) for application in food preservation. Agar and maltodextrin were co-used as cross-linking agents aiming at improving the hydrophobicity of the PVA film. All the additives exhibited high compatibility with the PVA matrix and provided significant enhancement in film properties compared to the unmodified PVA. PBLLE was found to impart strong antibacterial activities and UV blocking property to the films. Moreover, the addition of PBLLE also remarkably increased the film flexibility owing to chemical and physical interactions between chemical compounds in the extract and the polymer network. The as-prepared blend films showed their effectiveness in prolonging the self-life of bread and mango, demonstrating a great potential for their practical applications in active food packaging field.     

Novel Bio-Based Materials and Applications in Antimicrobial Food Packaging: Recent Advances and Future Trends

Food microbial contamination not only poses the problems of food insecurity and economic loss, but also contributes to food waste, which is another global environmental problem. Therefore, effective packaging is a compelling obstacle for shielding food items from outside contaminants and maintaining its quality. Traditionally, food is packaged with plastic that is rarely recyclable, negatively impacting the environment. Bio-based materials have attracted widespread attention for food packaging applications since they are biodegradable, renewable, and have a low carbon footprint. They provide a great opportunity to reduce the extensive use of fossil fuels and develop food packaging materials with good properties, addressing environmental problems and contributing significantly to sustainable development. Presently, the developments in food chemistry, technology, and biotechnology have allowed us to fine-tune new methodologies useful for addressing major safety and environmental concerns regarding packaging materials. This review presents a comprehensive overview of the development and potential for application of new bio-based materials from different sources in antimicrobial food packaging, including carbohydrate (polysaccharide)-based materials, protein-based materials, lipid-based materials, antibacterial agents, and bio-based composites, which can solve the issues of both environmental impact and prevent foodborne pathogens and spoilage microorganisms. In addition, future trends are discussed, as well as the antimicrobial compounds incorporated in packaging materials such as nanoparticles (NPs), nanofillers (NFs), and bio-nanocomposites.     

Food packaging based on polymer nanomaterials

Since its starting in the 19th century, modern food packaging has made great advances as results of global trends and consumer preferences. These advances are oriented to obtain improved food quality and safety. Moreover, with the move toward globalization, food packaging requires also longer shelf life, along with the monitoring of safety and quality based upon international standards. Nanotechnology can address all these requirements and extend and implement the principal packaging functions - containment, protection and preservation, marketing and communications. Applications of polymer nanotechnology in fact can provide new food packaging materials with improved mechanical, barrier and antimicrobial properties, together with nano-sensors for tracing and monitoring the condition of food during transport and storage.The latest innovations in food packaging, using improved, active and smart nanotechnology will be analyzed. It will be also discuss the limits to the development of the new polymer nanomaterials that have the potential to completely transform the food packaging industry.     

为食品包装增色添彩的K-树脂

薄膜是食品包装的主要物料。菲利浦公司生产的 k-树脂 (苯乙烯 -丁二烯共聚物 )是一种透明族树脂 ,具有很好的抗冲击、抗拉强度和光学性 ,适宜制造薄膜。这种材料的出现 ,拓宽了食品包装市场。现时有不少食品及糖果制造商都采用由 k-树脂制成的薄膜。本文介绍这种薄膜性能和应用     

Pullulan‐based films and coatings for food packaging: Present applications,emerging opportunities,and future challenges

Societal and industrial demands for lower environmental impact, cost effectiveness, and high‐performance goods and services are increasingly impacting the choice of technologies which are developed and deployed in consumer products. Like many other sectors, food packaging is moving to new technologies; the use of biopolymers is one of the most promising strategies toward an optimized use of traditional packaging materials (e.g., oil‐based plastics) without impairing the goal of extending shelf life. Among other food packaging materials, pullulan is attracting much attention due to its unique features. The goal of this review is to provide an overview of current and emerging applications of pullulan within the food packaging sector. In particular, the functional properties of interest for the food packaging industry will be discussed in light of the physicochemical attributes of this exopolysaccharide. Future challenges that may dictate the successful penetration of pullulan in the food packaging market are also outlined. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 40539.     

食品抗菌包装技术及研究进展

介绍了抗菌剂的种类，并概述了国内、外食品抗菌包装技术的最新研究进展。     

淀粉/聚乙烯醇活性包装薄膜及其在食品包装应用中的研究进展

综述了淀粉/聚乙烯醇（PVA）活性包装薄膜及其在食品包装中的研究进展，主要对从不同比例共混、疏水改性、增强改性等方面对淀粉/PVA薄膜的改性研究，从功能特性和活性物质对薄膜性能的影响2个方面对淀粉/PVA活性薄膜研究和薄膜在食品包装中的应用3个方面进行了归纳总结，旨在为以淀粉/PVA为基材的活性包装薄膜研究提供参考。     

Structure,gas-barrier properties and overall migration of poly(lactic acid) films coated with hydrogenated amorphous carbon layers

Hydrogenated amorphous carbon (a-C:H) films were grown on a poly(lactic acid) (PLA) substrate by means of a radiofrequency plasma-enhanced chemical vapour deposition (rf-PECVD) technique with different deposition times (5, 20 and 40 min). The main goal of this treatment was to increase the barrier properties of PLA, maintaining its original transparency and colour as well as controlling interactions with food simulants for packaging applications. Morphological, chemical, and mechanical properties of PLA/a-C:H systems were evaluated while permeability and overall migration tests were performed in order to determine the effect of the plasma treatment on the gas-barrier properties of PLA films and their application in food packaging. Morphological results suggested a good adhesion of the deposited layers onto the polymer surface and the samples treated for 5 and 20 min only slightly darkened the PLA film. X-ray photoelectron spectroscopy revealed that the structural properties of the carbon layer deposited onto the PLA film depend on the exposure time. PLA/a-C:H system treated for 5 min showed the highest barrier properties, while none of the studied samples exceeded the migration limit established by the current legislation, suggesting the suitability of these materials in packaging applications.     

Aseptisches Verpacken von Lebensmitteln – Grundlagen und Stand der Technik

Aseptic packaging of foods – fundamentals and state of the art . During the last two decades, a highly successful development has taken place in this area and aseptic packaging is today considered a normal component of technology in many areas of food industry. Aseptic packaging of food can be divided into two main areas of application: 1. Packaging of presterilized and sterile products. 2. Packaging of unsterilized products to avoid the external contamination. In most case, destruction of the microorganisms and spores attached to the surface by a lethal factor obeys the general logarithmic time law. For aseptic packaging of a given product, it is necessary to coordinate 4 factors, viz. the packaging material, the sterilization process for the packaging material surface, the packaging machine itself, and the operating environment of the machine: among these factors, the sterilization process is of greatest importance.     

Electrochemical characterisation of protective organic coatings for food packaging

A very common material for food packaging is steel, in the form of metallic containers (cans), in particular for beverage packaging. The corrosion degradation of the packaging must be carefully controlled, not only because the packaging integrity must be preserved, but also in order to avoid any significant contamination of the food or drink, compromising the flavour. In order to increase the coating performance and the food compatibility, new organic coatings are under development with very high protective properties, with the final aim to increase the shelf life of the product. An electrochemical characterisation is often used to study the protective performance of organic coatings on metal substrate for various applications. Some different coatings for food packaging were considered in the present study, including materials with different chemical composition and different pigments content. The protective properties were quantified using electrochemical impedance spectroscopy (EIS) measurements, comparing the electrochemical substrate activity with electrochemical noise (EN) and scanning Kelvin probe (SKP) measurements. The influence of mechanical deformations on the protective properties was also investigated. The results obtained on the studied coatings confirmed the validity of the electrochemical approach and showed that, in general, the coatings containing pigments (TiO₂) have better performance than clearcoats, while comparing the different polymers, epoxy–phenolic coatings have a better corrosion protection than epoxy–melamine coatings.     

食品接触材料中污染物分析技术的研究进展

对食品接触材料中可能产生的食品污染物及其分析技术进行综述,重点介绍了抗氧化剂、有意添加物、非有意添加物（NIAS）、低聚物、挥发性气味物质等污染物,以及其定性分析技术（挥发性有机化合物、非挥发性有机化合物）、表面分析技术及定量分析技术,以期为食品接触材料的质量管控及食品安全的监管提供技术参考。