目的 介绍几种常用纳米材料在食品包装中的应用，总结食品包装中纳米材料的检测技术及表征方法，并对其安全性进行评估。方法 介绍纳米银、纳米氧化钛、纳米氧化锌、纳米氧化硅、纳米黏土、纳米分子筛以及其他纳米复合材料在食品包装中的应用，列举食品包装中纳米材料的表征手段，如成像显示技术、色谱质谱技术和光谱分析技术等，并对食品包装中纳米材料的迁移风险和毒理学问题进行探讨。结论 纳米材料的存在能有效改善食品包装材料在保鲜效果、抗菌能力以及阻隔性能方面的特性，具有广阔的市场应用前景。此外，食品包装材料的安全性不容忽视，还应加强对食品接触用纳米材料的风险评估体系的研究。

The work aims to introduce the application of several common nanomaterials in the food package, summarize the detection technologies and characterization methods of nanomaterials in the food package, and evaluate their safety. The applications of nanomaterials including Ag nanomaterials, TiO2 nanomaterials, ZnO nanomaterials, SiO2 nanomaterials, nanoclay, nano-zeolite and other nanocomposites in food package were illuminated. The characterization methods including imaging display technology, chromatography and/or spectroscopy technology and spectrum analysis techniques used to characterize nanomaterials in food package were listed. The migration risk and toxicology of nanomaterials in food package were discussed. Nanomaterials can effectively improve the fresh-keeping effect, antibacterial ability and barrier properties of food packaging materials, and have wide market application prospects. In addition, the safety of food packaging materials cannot be ignored. The research on the risk assessment system for food contact nanomaterials should also be strengthened.