Department of Food Engineering and Bionanocomposite Research Institute, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, 534-729, Jeonnam, Republic of Korea.
Center for Humanities and Sciences and Department of Food and Nutrition, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 120-701, Republic of Korea.
Carbohydr Polym. 2017 Aug 1;169:264-271. doi: 10.1016/j.carbpol.2017.04.025. Epub 2017 Apr 14.
The present study aimed to develop the carbohydrate biopolymer based antimicrobial films for food packaging application. The nanocomposite films of various biopolymers and copper oxide nanoparticles (CuONPs) were prepared by solvent casting method. The nanocomposite films were characterized using SEM, FTIR, XRD, and UV-vis spectroscopy. The thermal stability, UV barrier, water vapor permeability, and antibacterial activity of the composite films were also evaluated. The surface morphology of the films was dependent on the types of polymers used. The XRD revealed the crystallinity of CuONPs in the composite films. The addition of CuONPs increased the thickness, tensile strength, UV barrier property, relative humidity, and water vapor barrier property. The CuONPs incorporated composite films exhibited strong antibacterial activity against Escherichia coli and Listeria monocytogenes. The developed composite films could be used as a UV-light barrier antibacterial films for active food packaging.
本研究旨在开发基于碳水化合物生物聚合物的抗菌薄膜，用于食品包装应用。通过溶剂浇铸法制备了各种生物聚合物和氧化铜纳米粒子（CuONPs）的纳米复合薄膜。使用 SEM、FTIR、XRD 和 UV-vis 光谱对纳米复合薄膜进行了表征。还评估了复合薄膜的热稳定性、UV 阻隔性、水蒸气透过性和抗菌活性。薄膜的表面形态取决于所使用的聚合物类型。XRD 显示了复合薄膜中 CuONPs 的结晶度。添加 CuONPs 增加了薄膜的厚度、拉伸强度、UV 阻隔性能、相对湿度和水蒸气阻隔性能。掺入 CuONPs 的复合薄膜对大肠杆菌和单核细胞增生李斯特菌表现出很强的抗菌活性。开发的复合薄膜可用作具有抗菌活性的 UV 光阻隔薄膜，用于主动食品包装。
