School of Food Science and Technology, State Key Laboratory of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Lihu Road 1800, Wuxi, Jiangsu, 214122, PR China.
School of Food Science and Technology, State Key Laboratory of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, Lihu Road 1800, Wuxi, Jiangsu, 214122, PR China; Wuqiong Foods Co., Ltd, Chaozhou, Guangdong, 515700, PR China.
Carbohydr Polym. 2021 May 15;260:117778. doi: 10.1016/j.carbpol.2021.117778. Epub 2021 Feb 10.
To deal with serious environmental damage resulting from plastic packaging materials, biodegradable films using natural products have gained considerable attention. Here, we provide a simple, fast, and environmentally-friendly route to construct a biodegradable film using chitosan (CS), bacterial cellulose (BC), and curcumin (Cur). Composite films (CSn-BC-Cur) using CS with different molecular weights were investigated, and their water moisture content (MC), water solubility (WS), contact angle (CA), mechanical properties, barrier properties, and antioxidant properties were compared. The obtained films were characterized by SEM, XRD, and TGA. The results showed that chitosan with a higher molecular weight presented higher contact angles and mechanical properties, along with a lower moisture content, water vapor transmission rate, and oxygen transmission rate. Furthermore, when the composite film was placed in 95 % ethanol, it released active substances. The results suggest that these composite films can be used as promising materials for food packaging.
为了解决塑料包装材料造成的严重环境破坏，使用天然产品的可生物降解薄膜引起了相当大的关注。在这里，我们提供了一种简单、快速、环保的方法，使用壳聚糖 (CS)、细菌纤维素 (BC) 和姜黄素 (Cur) 构建可生物降解薄膜。研究了不同分子量的 CS 与 BC 和 Cur 的复合膜 (CSn-BC-Cur)，并对其水分含量 (MC)、水溶性 (WS)、接触角 (CA)、力学性能、阻隔性能和抗氧化性能进行了比较。通过 SEM、XRD 和 TGA 对所得薄膜进行了表征。结果表明，分子量较高的壳聚糖具有较高的接触角和力学性能，同时具有较低的水分含量、水蒸气透过率和氧气透过率。此外，当复合膜置于 95%乙醇中时，会释放出活性物质。结果表明，这些复合膜可用作有前景的食品包装材料。
