Food waste and food safety motivate the need for improved food packaging solutions. However, current films/coatings addressing these issues are often limited by inefficient release dynamics that require large quantities of active ingredients. Here we developed antimicrobial pullulan fibre (APF)-based packaging that is biodegradable and capable of wrapping food substrates, increasing their longevity and enhancing their safety. APFs were spun using a high-throughput system, termed focused rotary jet spinning, with water as the only solvent, allowing the incorporation of naturally derived antimicrobial agents. Using avocados as a representative example, we demonstrate that APF-coated samples had their shelf life extended by inhibited proliferation of natural microflora, and lost less weight than uncoated control samples. This work offers a promising technique to produce scalable, low-cost and environmentally friendly biodegradable antimicrobial packaging systems.

食物浪费和食品安全促使人们需要改进食品包装解决方案。然而，当前解决这些问题的薄膜/涂层通常受到需要大量活性成分的低效释放动力学的限制。在这里，我们开发了基于抗菌普鲁兰纤维 (APF) 的包装，这种包装可生物降解，能够包裹食品基材，延长其使用寿命并提高其安全性。APF 使用高通量系统进行纺丝，称为聚焦旋转喷射纺丝，水是唯一的溶剂，允许掺入天然衍生的抗菌剂。以鳄梨为例，我们证明了 APF 涂层样品的保质期通过抑制天然微生物群落的增殖而延长，并且比未涂层的对照样品减轻了更少的重量。