在这项研究中,添加0.1%的明胶-壳聚糖(GEL-CS)复合膜,0.2%,制备了0.3%青钱柳黄酮(CPF)。然后它们的外观属性,机械性能,阻隔性能,微观结构,热稳定性能,抗氧化活性,和抗菌性能进行了研究。与GEL-CS薄膜相比,带有CPF的GEL-CS薄膜颜色较深,有更高的水蒸气屏障,较高的断裂伸长率,和更高的热稳定性。此外,用傅里叶红外光谱进行微观结构分析,扫描电子显微镜,X射线衍射表明,氢键是CPF与其他膜基质交联的主要力量。此外,CPF的加入增强了膜的抗氧化和抗菌性能。这些结果表明,CPF的添加可以赋予膜更优异的功能特性和生物活性,伴随着环保和可食用的特点。GEL-CS-CPF复合膜将是用于食品保鲜应用的潜在且有前景的包装材料。
In this study, gelatin-chitosan (GEL-CS) composite films added with 0.1 %, 0.2 %, and 0.3 % Cyclocarya paliurus flavonoids (CPF) were prepared. Then their appearance properties, mechanical properties, barrier properties, microstructure, thermal stability properties, antioxidant activity, and antibacterial properties were investigated. As compared with GEL-CS film, the GEL-CS films with CPF were darker in color, had higher water vapor barrier, higher elongation at break, and higher thermal stability. Additionally, microstructure analysis with Fourier infrared spectroscopy, scanning electron microscopy, and X-ray diffraction demonstrated that hydrogen bonding was the main force for cross-linking CPF with other membrane substrates. Moreover, the addition of CPF strengthened the antioxidant and antimicrobial properties of the membranes. These results indicated that the CPF addition could endow membranes with more excellent functional properties and bioactivity, accompanied by environmentally friendly and edible features. The GEL-CS-CPF composite film would be a potential and prospective packing material for food preservation applications.