Abstract：
In recent years, how to improve the functional performance of food packaging materials has received increasing attention. One common inorganic material, nanometer zinc oxide (ZnO-NPs), has garnered significant attention due to its excellent antibacterial properties and sensitivity. Consequently, ZnO-NP-based functional packaging materials are rapidly developing in the food industry. However, there is currently a lack of comprehensive and systematic reviews on the use of ZnO-NPs as functional fillers in food packaging. In this review, we introduced the characteristics and antibacterial mechanism of ZnO-NPs, and paid attention to the factors affecting the antibacterial activity of ZnO-NPs. Furthermore, we systematically analyzed the application of intelligent packaging and antibacterial packaging containing ZnO-NPs in the food industry. At the same time, this paper also thoroughly investigated the impact of ZnO-NPs on various properties including thickness, moisture resistance, water vapor barrier, mechanical properties, optical properties, thermal properties and microstructure of food packaging materials. Finally, we discussed the migration and safety of ZnO-NPs in packaging materials. ZnO-NPs are safe and have negligible migration rates, simultaneously their sensitivity and antibacterial properties can be used to detect the quality changes of food during storage and extend its shelf life.
摘要：
近年来,如何提高食品包装材料的功能性能日益受到重视。一种常见的无机材料，纳米氧化锌(ZnO-NPs),由于其优异的抗菌性能和敏感性，已经引起了极大的关注。因此,ZnO-NP基功能包装材料在食品工业中发展迅速。然而,目前对ZnO-NPs作为功能性填料在食品包装中的应用缺乏全面系统的综述。在这次审查中,介绍了ZnO-NPs的特性和抗菌机理,并关注了影响ZnO-NPs抗菌活性的因素。此外，系统分析了含ZnO-NPs的智能包装和抗菌包装在食品工业中的应用。同时,本文还深入研究了ZnO-NPs对各种性能的影响，包括厚度，防潮性,水蒸气屏障，机械性能，光学性质,食品包装材料的热性能和微观结构。最后,讨论了ZnO-NPs在包装材料中的迁移和安全性。ZnO-NP是安全的，迁移率可以忽略不计，同时，它们的敏感性和抗菌性能可用于检测食品在储存过程中的质量变化并延长其保质期。
