Li Fangyu, Mao Shuo, Xu Yingjie, Pan Leyuan, Wang Wenzhe, Zhang Tiehua, Lu Chengwen
College of Food Science and Engineering, Jilin University, 130062, Changchun, PR China.
College of Food Science and Engineering, Jilin University, 130062, Changchun, PR China.
Food Chem. 2025 Jul 30;481:144086. doi: 10.1016/j.foodchem.2025.144086. Epub 2025 Mar 28.
Active films attracted growing interest due to environmental protection and safety of food packaging materials. In this study, we developed cross-linking corn starch/konjac glucomannan active films by incorporating thymol microcapsules (TMs). FTIR, XRD and SEM results indicated the formation of molecular interactions and good compatibility between cross-linking matrixes and TMs. The cross-linking effect with citric acid (CA) significantly reduced the water vapor permeability and swelling rate of the films. Addition of TMs in the composite films improved mechanical property, moisture content, light barrier property and antibacterial activities against E. coli and S. aureus. Additionally, the MCSK4 films effectively reduced weight loss, maintained firmness, and enhanced total phenolic content and total flavonoid content of cherry tomatoes. The synergistic effects of CA and TMs improved the structural and functional properties of composite films, providing a potential application for fruit and vegetable preservation.
由于食品包装材料的环境保护和安全性，活性薄膜引起了越来越多的关注。在本研究中，我们通过加入百里香酚微胶囊（TMs）制备了交联玉米淀粉/魔芋葡甘聚糖活性薄膜。傅里叶变换红外光谱（FTIR）、X射线衍射（XRD）和扫描电子显微镜（SEM）结果表明，交联基质与TMs之间形成了分子相互作用且具有良好的相容性。柠檬酸（CA）的交联作用显著降低了薄膜的水蒸气透过率和溶胀率。在复合薄膜中添加TMs提高了其机械性能、水分含量、阻光性能以及对大肠杆菌和金黄色葡萄球菌的抗菌活性。此外，MCSK4薄膜有效地减少了樱桃番茄的重量损失，保持了其硬度，并提高了其总酚含量和总黄酮含量。CA和TMs的协同作用改善了复合薄膜的结构和功能特性，为果蔬保鲜提供了潜在的应用价值。
