Nanotechnology is being used in food packaging to improve food quality and sustainability. By incorporating nanoparticles into packaging materials, the physicochemical properties are enhanced, leading to better preservation of food like meat, fruits, and vegetables. Nanomaterials like nano metals and oxides help inactivate food spoilage microorganisms, keeping food fresh for longer. Time-temperature indicators and freshness indicators are used to evaluate and control food quality. While there are concerns about nanoparticles migrating into food, regulations ensure safety. Overall, nanotechnology in food packaging benefits both food quality and the environment.