Research Status and Prospects of Bio-based Materials for Grease Barrier Coatings on Paper Food Packaging

Increased environmental and health concerns over the use of plastic packaging or fluorine-containing coatings,in combination with increased market demand for products with a longer shelf life,make bio-based materials one of the most important research candidates for alternative paper packaging materials for oil resistance.These bio-based materials have excellent oxygen and oil barriers,which are critical for food packaging.Moreover,they are biodegradable,naturally renewable,and safe.In this artical,two main groups of bio-based oil repellents for paper food packaging,including polysaccharide-based biopolymers and protein-based biopolymers,are enumerated,and the advantages and weaknesses of bio-based oil repellents are discussed,and effective solutions are proposed.Finally,research status and prospects on the development of bio-based oil-resistant coatings for the food packaging industry are presented.

A Perspective on Human Exposures to Plastics Additives in Water-Packaging Materials

Plastic and polymer additives (PA) have unique rational advantages for various water and food packaging applications. However, their (bio)chemical natures are recently recognized for their negative human health impacts. The major adverse consequence of these additives in consumer products is in the form of endocrine-disruption related health-downgrades. Such findings still remain underappreciated in most parts globally;part of which could be ascribed to fragmented studies towards better understanding on the occurrence, release and migration, human exposure, epidemiology and risk assessment of PA from packaging materials. In addition there is limited and disconnected dissemination of research findings on PA effects and mitigation measures to society at present. In light of appropriateness of this topic, a trans-disciplinary research agenda is required for addressing exposure routes to PA, human health burden and prevention measures. This perspective article discusses important research questions relating to PA, which try to shed light to a grey scientific area and help increase consumers’ awareness and intervention to such exposures.

Application and safety assessment for nano-composite materials in food packaging

The technical breakthroughs and rapid developments in nanotechnologies enabling goods and products based on nanomaterials (NMs) has come to media and public attention as potentially one of the most significant technological advances of our time. Among these technical applications, nano-composite food packaging, which combines the NMs and conventional packaging, is at the forefront of applications in nanotechnologies, leading the whole industrial chain based on nanotechnologies with high speed development. Taking into account the status of the nano-composites applied in food packaging and present development trends, this review is focused on summarizing the basic applications of the nano-composites in food packaging as well as its risk assessment. The status summaries and the conclusions derived from this review are of benefit to manufacturers which produce the nano-composites used in food packaging, to general consumers and to governmental administration entities.

Biobased materials for food packaging

Consumers prefer foods that are healthier with high quality and safety.Food packaging are de-manded to effectively extend the shelf-life,preserve the nutrients and decrease the microbial contamination during the transport and storage of food.With the increasing concern on the envi-ronmental impacts caused by food packaging wastes,sustainable and green packaging are highly demanded to minimize the harmful effects of food packaging waste on the environment.Bio-based materials are derived from sustainable and renewable biomass,instead of finite petrochemicals.The applications of bio-based materials for food packaging are highlighted in this review.The emphasis is placed on the categories of related biobased materials,their characteristics and ad-vantages for food packaging,as well as the strategies used to improve their performances.Though a lot of trials have been done on biobased materials for food packaging,further attempts to im-prove their performances,understand the functioning mechanisms and develop greener methods for the production,processing and destiny of these bio-based materials are still highly needed for the future research.

Development of Ficus carica Linn leaves extract incorporated chitosan films for active food packaging materials and investigation of their properties

The serious problems caused by extensive usage of petroleum-based plastic materials led to investigating the comprehensive studies and developing active food packaging materials.Even if the chitosan-based films are considered an attractive source,they exhibit some practical difficulties in developing active food packaging applications.Hence,Ficus carica Linn leaves extract(FLE),with the features of its cheapness,easy accessibility and superoxide anion radical scavenging activity,was incorporated into chitosan(CS)film at various concentrations(2%-6%w/w).To the best of our knowledge,this was the first time that FLE was utilized as a bioactive substance incorporated into chitosan films to develop eco-friendly,biodegradable,active food packaging material.The results obtained revealed that FLE incorporation into chitosan films significantly improved the swelling,water solubility and opacity of neat chitosan films.FTIR and morphological analysis indicated that the films produced exhibited smooth structure with homogenous dispersion of FLE.In mechanically,the addition of FLE resulted in a significant reduction in tensile strength while the elasticity of the films was improved.Additionally,the antioxidant and biodegradability properties of neat chitosan films were enhanced significantly.It was concluded that CS-FLE films appeared to be a capable and enhanced option for synthetic polymer-based food packaging materials.Based on the analyses performed,further studies are suggested on the packaging application for various foods and to evaluate the possible interaction of packaging film materials with the compounds of the food products,to avoid possible negative effects.

外卖餐具中16种合成酚类抗氧化剂的含量及迁移分析

目的测定外卖餐具中16种合成酚类抗氧化剂(synthetic phenolic antioxidants,SPAs)的含量,分析外卖餐具中这类污染物的迁移行为。方法本研究通过液相色谱-串联三重四极杆质谱法和气相色谱-串联三重四极杆质谱法,测定了6大类不同品牌外卖餐具中16种SPAs的含量。分别以纯净水、4%醋酸(V/V)、10%乙醇水溶液(V/V)、50%乙醇水溶液(V/V)和95%乙醇水溶液(V/V)为食品模拟物,开展不同品牌外卖餐具中主要SPAs的迁移实验。结果外卖餐具中均可以检出1种以上SPAs,其中2,6-二叔丁基对甲酚及其代谢物的含量和检出率最高,2,4-二叔丁基苯酚和新兴化合物2,2’-亚甲基双-(4-甲基-6-叔丁基苯酚)次之,然而2,4-二叔丁基苯酚是外卖餐具最主要的迁移物。结论外卖餐具中合成酚类抗氧化剂广泛存在。2,4-二叔丁基苯酚在外卖餐具中大量迁出,其健康危害需要引起足够关注。

抑菌硅橡胶泡沫食品包装材料的制备与研究

目的旨在开发一种新型硅橡胶基抑菌包装材料,用于食品包装领域。该材料具备可控的发泡倍率、疏水性、优异的拉伸性能和高效的抑菌性能。方法通过调整乙烯基硅油、含氢硅油和羟基硅油的配比,优化硅橡胶的交联和发泡工艺,在硅橡胶基材中引入纳米银颗粒作为抑菌剂,提升包装的抑菌效果。对材料的发泡倍率、吸水性、抑菌性能等进行综合评估。结果所制备的硅橡胶材料发泡倍率可在2~3倍范围内调控,且具有优异的疏水性,吸水率低于0.1%。抑菌实验结果显示,材料对大肠杆菌具有91.4%的抑制效果,对金黄色葡萄球菌有88.46%的抑制效果。结论本研究成功开发了一种符合食品包装要求的硅橡胶基抑菌材料。该材料的这些特性使其在食品包装领域具有广泛的应用潜力,特别是在需要防潮、抑菌和提高包装可靠性的场景中。

纤维素纳米纤维复合膜的制备及其作为食品包装材料的优异性能研究进展

近年来,塑料包装的大量使用造成了严重的环境污染。随着人们环保意识的提升,开发可生物降解的新型食品包装材料以替代传统石油基塑料已成为研究热点。纤维素纳米纤维(cellulose nanofibrils,CNF)因其高比表面积、高弹性模量、高强度和高气体阻隔性等优异性能而受到研究者们广泛青睐。本文总结了CNF及其相关复合膜的制备方法,讨论了CNF复合膜作为食品包装材料的机械性能、阻隔性能、抑菌性能、可降解性及响应性能。最后,提出CNF应用于食品包装领域所面临的挑战,旨在为未来生产纳米纤维素食品包装材料代替传统石油基材提供参考。

可生物降解纳米材料在食品包装中的研究进展

日益严峻的全球环境问题和日益紧缺的资源给食品包装材料的开发与利用提出了挑战。为进一步推动可生物降解包装材料在食品包装中的应用,对与纳米技术相结合、可生物降解的食品包装的制备原料、主要性能及其在食品保鲜、抗菌、延长货架期的方法和效果进行了综述。纳米材料独特的生物相容性好、利于化学修饰和小尺寸效应等优势与生物可降解性相结合可促进食品包装的功能强化和应用的拓宽。

壳聚糖纳米复合食品包装抗菌材料研究进展

基于壳聚糖纳米复合抗菌材料在食品包装中的应用潜力,介绍了壳聚糖薄膜材料的制备方法,综述了壳聚糖与银纳米粒子、氧化镁、氧化锌、二氧化钛、二氧化硅、碳酸钙等纳米材料复合制备复合抗菌材料的研究进展,指出壳聚糖是性能优异的食品包装材料,但是壳聚糖复合薄膜还存在机械强度低、阻隔性能差、抗氧化性弱和水溶性差等缺点。溶液流延法是简单方便且使用广泛的制备壳聚糖复合薄膜的方法;层层挤出法制备的壳聚糖复合薄膜具有良好的机械性能和热稳定性;与纯壳聚糖薄膜相比,壳聚糖与纳米材料复合制备的复合薄膜具有更好的抗菌性能。未来应加强对壳聚糖纳米复合食品包装抗菌材料安全性以及制备方法的研究,推动壳聚糖纳米复合材料的规模化生产和在食品包装中的应用。

食品接触用多层复合包装中迁移物质的非靶向筛查和风险评价

目的以食品接触用纸/铝/塑复合包装为研究对象,结合应用非靶向高通量筛查技术和安全风险评价方法,全面研究这类多层复合包装在接触食品过程中的迁移风险。方法采用顶空气相色谱-串联质谱、气相色谱-四极杆飞行时间质谱和液相色谱-四级杆飞行时间质谱全面筛查食品接触用纸/铝/塑复合包装在不同迁移条件下的挥发性、半挥发性和非挥发性迁移物质,基于商业数据库、实验室自建库及行业信息解析物质化学结构及可能来源,利用内标半定量迁移水平,结合国内外食品接触材料法规和安全风险评估方法进行符合性评价及风险评价。结果20批纸/铝/塑复合食品包装在体积分数为4%的乙酸模拟物中未发现迁移风险,在体积分数为95%的乙醇模拟物中共计检出35种物质,可能源于溶剂、抗氧剂、爽滑剂、低聚物、抗氧剂氧化/降解产物等物质。其中,33种物质经法规评估及毒理学评估,显示风险较低;其余2类聚烯烃低聚物因结构难以确定、缺乏毒理学研究建议持续关注毒理学研究进展及国内外法律法规动态。结论通过结合应用非靶向高通量筛查技术和安全风险评估方法研究表明,在通常的使用条件下,纸/铝/塑多层复合包装用于盛装果汁等水性食品时不存在安全风险,但接触高乙醇含量或油脂类食品时建议关注聚烯烃类低聚物的迁移安全性。

食品包装材料对食品安全性的影响及控制分析

食品包装材料对食品安全性具有重要影响,它不仅可以保护食品免受外界因素的污染和损害,还可以延长食品的保质期和维持食品的色、香、味,不合格或不适宜的包装材料可能导致食品安全问题,对食品包装材料的选择、使用和控制非常重要。基于此,本文分析了食品包装材料对食品安全性的影响,提出了提高食品包装材料安全性的控制措施。

可生物降解材料在食品包装中的应用研究

本文通过对传统非降解材料引发的社会问题进行深度剖析,对可生物降解食品包装材料的内容进行概述,并通过进一步对可生物降解食品包装材料的深入研究,有效降低由于不可降解材料引发的环境污染等问题。以期通过本文论述,为相关研究提供参考。

食品包装材料对食品安全的影响及其质量控制研究

食品包装作为食品的重要组成部分,对食品的安全性,有着至关重要的影响。基于此,本文探讨了食品包装材料对食品安全的影响,以及如何通过质量控制来确保食品包装的安全,旨在为食品包装材料行业的健康发展提供理论依据。

食品包装材料的安全性和安全检测分析技术研究

包装是食品生产中的最后环节,包装的主要作用是将食品与外界环境隔离,以此防止食品污染。但是由于包装直接与食品接触,包装材料与食品安全之间存在必然联系,一旦包装出现质量问题,便会对包装内食品的质量造成影响。近些年食品安全问题屡见不鲜,这不仅会对社会正常秩序造成影响,而且还会危害消费者的身体健康。在这种情况下,我国开始加大对食品安全的监管力度,同时制定严格的食品安全检测标准。在食品生产中,大部分制造商会通过包装满足食品保存、运输的需求。为防止包装材料对食品造成污染,有必要做好食品包装材料安全性的检测工作,并在相关技术的支持下确保包装材料品质,以此构建食品安全保障屏障。

可降解材料在食品包装设计中的应用研究——环保与保鲜的平衡

可降解材料在食品包装设计中的应用引起了广泛的关注,以平衡环保和食品保鲜之间的需求。本文旨在探讨可降解材料在食品包装设计中的应用,以解决塑料污染问题并保持食品品质,旨在为推动食品行业向可持续发展迈进提供理论依据。本文对可降解材料的定义和分类进行了介绍,并详细探讨了可降解材料在食品包装设计中的应用。在平衡环保和保鲜效果的基础上,本文还分析了可降解材料在食品包装设计中的挑战与机遇,并提出了未来可降解材料在食品包装设计中的发展方向。

浅析智能材料包装对食品存放的影响

智能包装作为新型包装,对食品存放有着很大的优势。本文分析智能包装现状,从材料型智能包装对食品存放的保护方面进行分析,阐述其在保质期、新鲜度、泄露等方面的感知与互动的优化方式,并得出智能材料感知包装将向着更加智能、精确和成熟的方向发展的结论。

新型天然植物精油纳米制剂在食品保藏中的 研究及应用进展

天然植物精油具有芳香气味、低毒和良好的抑菌及抗氧化性能,但植物精油高挥发性、不稳定性等物理特性导致其与包装材料结合时损失率较高。采用纳米材料包载植物精油可增强其稳定性,通过缓释作用显著提高精油抑菌及保鲜功效。概述了植物精油的主要化学成分和生物学活性及其抑菌和抗氧化作用,综述了近年国内外针对精油纳米制剂的研究及其在食品包装、食品保藏中的应用,进一步比对不同植物精油及其纳米制剂对果蔬类、肉类及水产类食品的保藏效果,并对未来精油结合新型包装材料在食品保藏中的应用作出构想,为延长食品货架期提供理论支持。

再生纤维素食品包装材料应用进展及法规研究

目的归纳总结再生纤维素基材料在食品包装行业的研究进展及各国法规情况,以促进再生纤维素在食品包装领域的应用和发展,同时确保其符合相关法规和标准,保障食品安全。方法对再生纤维素概况及制备方法进行简要介绍,对再生纤维素在食品包装领域的研究进行详细综述,对再生纤维素在食品包装领域的应用前景及存在的困难进行总结及展望。结果溶解与再生在再生纤维素制备过程中发挥着至关重要的作用;再生纤维素已经在抗菌、防腐、抗紫外线及抗水蒸气阻隔食品包装领域取得了一定的研究进展;目前不同国家和地区已经制定了相关的法规但仍存在一定差异。结论再生纤维素已经成为新型包装材料的有力候选者之一,但仍需要在制备方法、法规制定等方面进行改进,以推动再生纤维素行业的持续健康增长和创新。

双酚A在包装饮品中污染现状及相关食品安全管理法规分析

随着现代生活水平的提高,包装饮品已经成为人们日常生活中不可或缺的一部分。双酚A(bisphenol A,BPA)作为一种常见的塑料制品添加剂,因其具有无色透明、耐用、轻巧和突出的防冲击性等特点,广泛应用于塑料容器、饮料瓶等食品包装材料。同时,BPA也是典型的环境内分泌干扰物,长期暴露于一定浓度的BPA即使较低剂量也可对机体产生多种毒性损伤,引发人体发生各种炎症、细胞损伤、焦虑抑郁、生殖能力下降甚至癌症等多种疾病。由于近年来国内水源地的污染和含BPA的食品包装材料的广泛使用,我国市售的纯净水、果汁、牛奶和酒类等多种包装饮品均检测到BPA的存在。且因饮品加工处理工艺、温度、pH、储存时间以及包装材料不同等因素导致各种类包装饮品BPA暴露水平有所差异。本文介绍我国各地区多种市售包装饮品的BPA暴露水平,归纳了美国、欧盟、日本、中国以及其他国家或组织针对食品以及食品包装材料安全管理法规并进行分析讨论,结合国内外现有的监管措施,为消费者减少BPA的饮水暴露提出了有效建议,以期为BPA的人群暴露剂量与健康风险研究提供参考依据。