This work investigates the construction of biodegradable packaging film based on polylactic acid (PLA) reinforced with a novel antibacterial hybrid nanofiller to improve barrier and mechanical properties. The study focuses on incorporating silver‐ingrained silica particles (Ag–In–Si) into PLA matrix to prepare the packaging film (Ag–In–SiPLA) that has superior antibacterial, and barrier property with negligible oxygen and water vapour penetration. The Ag was synthesized using natural neem leaf extract as a reducing agent. To ingrain silver over rice husk silica (Si) an in situ technique was adopted. Hence called Ag‐In‐Si bio‐filler. The Ag–In–SiPLA films were fabricated using melt blending and sheet extrusion methods by means of a micro‐compounder. The addition of rice husk silica served the purpose of cost‐effectiveness of the packaging film along with the enhancement of the oxygen and water barrier properties of the films. The optimized sample (PLA loaded with 3% Ag–In–Si), exhibited optimum transparency, moisture resistance, and barrier properties compared with control PLA film. The experiments on Muntingia calabura (Jamaica cherry) preservation have verified the remarkable effectiveness of Ag–In–SiPLA films in preserving their quality for an extended period. These biodegradable packaging films, composed of food‐grade materials and sustainable ingredients, have the potential to provide a compostable and environmentally friendly solution for various packaging applications. This research shed light on the antibacterial Ag–In–SiPLA film as a long‐term, high‐performance fruit packaging solution.Highlights Novel antibacterial PLA composite with enhanced barrier and mechanical properties. Silver‐ingrained silica particles improve antibacterial and barrier properties. Green synthesis of silver using neem leaf extract Melt blending and sheet extrusion used to create cost‐effective packaging films. Ag–In–SiPLA films extend Muntingia calabura preservation, proving effective.

中文翻译：

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通过抗菌混合生物填料增强聚（乳酸）复合包装膜的阻隔性能：延长水果的保质期


这项工作研究了基于聚乳酸 （PLA） 的可生物降解包装薄膜的构建，该薄膜用新型抗菌混合纳米填料增强，以提高阻隔性和机械性能。该研究的重点是将银根基二氧化硅颗粒 （Ag-In-Si） 掺入 PLA 基质中，以制备具有卓越抗菌和阻隔性能的包装薄膜 （Ag-In-SiPLA），氧气和水蒸气渗透可以忽略不计。该 Ag 是使用天然印楝叶提取物作为还原剂合成的。为了将银嵌入稻壳二氧化硅 （Si） 上，采用了一种原位技术。因此被称为 Ag-In-Si 生物填料。Ag-In-SiPLA 薄膜是通过微复合机使用熔融混合和片材挤出方法制造的。稻壳二氧化硅的添加有助于提高包装薄膜的成本效益，同时增强薄膜的氧气和水阻隔性能。与对照 PLA 薄膜相比，优化后的样品（负载 3% Ag-In-Si 的 PLA）表现出最佳的透明度、耐湿性和阻隔性能。Muntingia calabura（牙买加樱桃）保存实验验证了 Ag-In-SiPLA 薄膜在长时间保持其质量方面的显着效果。这些可生物降解的包装薄膜由食品级材料和可持续成分组成，有可能为各种包装应用提供可堆肥和环保的解决方案。这项研究阐明了抗菌 Ag-In-SiPLA 薄膜作为一种长期、高性能的水果包装解决方案。亮点 具有增强阻隔和机械性能的新型抗菌 PLA 复合材料。银根二氧化硅颗粒可改善抗菌和阻隔性能。 使用印楝叶提取物绿色合成银 用于制造具有成本效益的包装薄膜的熔融混合和片材挤出。Ag–In–SiPLA 薄膜延长了 Muntingia calabura 的保存时间，证明有效。