The microbial-killing Ag nanoparticles in food supply chain: How it was applied and what a consumer should know?

Moving to 133 years of the synthesis of citrate-stabilized silver nanoparticles (AgNPs) by M. C. Lea (published in Am. J. Sci, 1889), a myriad of scholarly works and patents were published globally demonstrating the applicability of this microbial-killing nanoparticles in various industries. One of the favorite applications is on the food supply chain whereby AgNPs serve to improve food safety and quality. In this paper, the adaptation of AgNPs in each phase of a typical food supply chain is disclosed, doubts associated with the potential risks brought by this technology, and what a consumer shall be aware of are highlighted.