College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China.
College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China.
Food Chem. 2023 Aug 30;418:135958. doi: 10.1016/j.foodchem.2023.135958. Epub 2023 Mar 20.
This study aimed at the composition of active packaging film from tapioca starch/pectin (TSP) incorporated with broccoli leaf polyphenols (BLP) was prepared and applied to improve the qualities of the chilled mutton during storage. The results indicated the addition of BLP significantly improved the thickness, density, barrier ability, mechanical properties, water solubility and antioxidant activity of the composite films while inducing decreases in the brightness (p < 0.05), enhancing inter-molecular interactions of TSP + BLP composite films. The WVP, oxygen permeability and elongation at break of the composite film reached the minimum when BLP concentration was 3 % while exhibiting the highest tensile strength and the best performance. This composite film delayed microbial growth and minimized oxidative rancidity during chilled mutton storage, causing the improvement of its quality and extending its shelf life to 12 days. Therefore, TSP + BLP composite films possessed the promise to be applied as bioactive materials in food packaging sectors.
本研究旨在制备以木薯淀粉/果胶（TSP）为基材，添加西兰花叶多酚（BLP）的活性包装膜，以改善冷藏羊肉在贮藏过程中的品质。结果表明，BLP 的添加显著提高了复合膜的厚度、密度、阻隔性能、力学性能、水溶性和抗氧化活性，同时降低了亮度（p<0.05），增强了 TSP+BLP 复合膜的分子间相互作用。当 BLP 浓度为 3%时，复合膜的水蒸气透过率、氧气透过率和断裂伸长率达到最小值，而拉伸强度和性能达到最大值。这种复合膜在冷藏羊肉贮藏过程中能抑制微生物的生长和最小化氧化酸败，从而提高羊肉的品质，延长货架期至 12 天。因此，TSP+BLP 复合膜有望作为生物活性材料应用于食品包装领域。
