Following the global corona virus pandemic and environmental contamination caused by chemical plastic packaging, awareness of the need for environmentally friendly biofilms and antibacterial coatings is increasing. In this study, a biodegradable hybrid film, comprising of green-synthesized zinc oxide nanoparticles (ZnO NPs) with a chitosan (CS) matrix, was fabricated using a simple casting procedure. The ZnO NPs were synthesized using wild Mentha pulegium extract, and the synthesized NPs and films were characterized using different approaches. The structural, morphological, mechanical, antibacterial, and optical properties, as well as the hydrophilicity, of the prepared samples were investigated using various techniques. Gas chromatography-mass spectrometry measurements revealed the presence of phenolic compounds in the M. pulegium extract. In addition, a strong coordination connection between Zn²⁺ and the chitosan matrix was confirmed, which resulted in a good dispersion of ZnO in the chitosan film. The surface of the composite films was transparent, smooth, and uniform, and the flexible bio-based hybrid films exhibited significant antibacterial and antioxidant characteristics, strong visible emission in the 480 nm region, and UV-blocking properties. The ZnO/CS films displayed a potential to extend the shelf life of fruits by up to eight days when stored at 23°C, and also acted as an acceptable barrier against oxygen and water. The biodegradable ZnO/CS film is expected to keep fruit fresher than general chemical plastic films and be used for the packaging of active ingredients.

随着全球冠状病毒大流行和化学塑料包装造成的环境污染，人们越来越意识到需要环保生物膜和抗菌涂层。在这项研究中，一种可生物降解的混合薄膜，由绿色合成的氧化锌纳米粒子 (ZnO NPs) 和壳聚糖 (CS) 基质组成，使用简单的铸造程序制造。ZnO NPs 使用野生薄荷合成提取物，并使用不同的方法对合成的 NP 和薄膜进行表征。使用各种技术研究了所制备样品的结构、形态、机械、抗菌和光学特性以及亲水性。气相色谱-质谱法测量显示M. pulegium提取物中存在酚类化合物。此外，Zn ^{2+之间具有很强的配位联系}并确认了壳聚糖基质，这导致 ZnO 在壳聚糖膜中具有良好的分散性。复合薄膜的表面透明、光滑、均匀，柔性生物基杂化薄膜表现出显着的抗菌和抗氧化特性，在 480 nm 区域具有强烈的可见光发射和紫外线阻隔性能。当在 23°C 下储存时，ZnO/CS 薄膜显示出将水果的保质期延长最多八天的潜力，并且还可以作为可接受的氧气和水屏障。可生物降解的ZnO/CS薄膜有望比一般化学塑料薄膜保鲜水果，并用于活性成分的包装。