Use of Metal-Based Nanoparticles for Active Packaging Applications. Part II: Functions, Applications, and Safety Concerns

As discussed in the preceding chapter, metal nanoparticles such as silver, zinc oxide, and titanium dioxide have remarkable efficacy in inhibiting microbial growth and enhancing oxygen scavenging capacities. Their use as additives in active packaging materials has significantly improved the properties of hybrid nanocomposite packaging materials. Specifically, the incorporation of these nanoparticles enhances antioxidant and antimicrobial properties while also improving critical characteristics such as barrier functions and mechanical strength. This prolongs the shelf life of food products and ensures their safety. This chapter explores the properties of hybrid materials formed with the introduction of metal nanoparticles, discusses their application across various food substances, and briefly reviews safety concerns and limitations associated with the use of metal nanoparticles in food packaging.