水果的工业加工产生了大量的果皮废料,造成经济损失和环境污染。橘子果皮是可用于生产食品包装系统的生物质和活性物质的良好来源。在这项研究中,以海藻酸钠和12个品种的橘皮粉为原料制备了活性食品包装膜。结构,属性,和玉米油膜的包装性能进行了比较。结果表明,12个品种的柑橘皮粉的果胶含量不同,脂质,蛋白质,粗纤维,和总酚含量。制备的薄膜全部呈现黄色,117.73-152.45μm厚度,16.39-23.62%含水率,26.03-90.75°水接触角,5.38-8.31×10-11gm-1s-1Pa-1水蒸气渗透率,5.26-12.91×10-20m2s-1Pa-1氧渗透率,抗拉强度4.87-7.90MPa,和13.37-24.62%的断裂伸长率。值得注意的是,含有高果胶和脂质含量的橘皮粉的薄膜显示出高的水氧阻隔能力和机械性能。总酚含量高的柑橘皮粉薄膜具有较高的抗氧化和抗菌释放能力,具有良好的延缓玉米油氧化的性能。总的来说,结果表明,该薄膜在活性食品包装中具有良好的应用潜力。
The industrial processing of mandarin fruits yields a large amount of peel waste, resulting in economic losses and environmental pollution. The peels of mandarin fruits are a good source of biomass and active substances that can be used to produce food packaging systems. In this study, active food packaging films were prepared based on sodium alginate and twelve varieties of mandarin peel powder. The structures, properties, and corn oil packaging performance of the films were compared. Results showed that the twelve varieties of mandarin peel powder differed in pectin, lipid, protein, crude fiber, and total phenol contents. The prepared films all exhibited a yellow color, 117.73-152.45 μm thickness, 16.39-23.62% moisture content, 26.03-90.75° water contact angle, 5.38-8.31 × 10-11 g m-1 s-1 Pa-1 water vapor permeability, 5.26-12.91 × 10-20 m2 s-1 Pa-1 oxygen permeability, 4.87-7.90 MPa tensile strength, and 13.37-24.62% elongation at break. Notably, the films containing mandarin peel powder with high pectin and lipid contents showed high moisture/oxygen barrier ability and mechanical properties. The films containing mandarin peel powder with high total phenol content exhibited high antioxidant- and antimicrobial-releasing abilities and good performance in delaying corn oil oxidation. Overall, the results suggested that the films have good application potential in active food packaging.