MUMBAI, India, April 17 -- Intellectual Property India has published a patent application (202511059875 A) filed by Panjab University, Chandigarh, India, on June 23, 2025, for 'near-infra-red activatable polymer film and application thereof.'
Inventor(s) include Kamaljit Kaur; Nishima Wangoo; and Madhu Khatri.
The application for the patent was published on April 17, under issue no. 16/2026.
According to the abstract released by the Intellectual Property India: "The present invention relates to an antimicrobial food-packaging film for extending the shelf life of perishable food products. The film comprises a biodegradable polymer matrix of poly (lactic-co-glycolic acid) reinforced with cellulose nanocrystals and embedded with up-conversion nanoparticles of sodium yttrium fluoride co-doped with ytterbium and thulium ions. Each nanoparticle is encapsulated within a mesoporous silica shell containing curcumin as a photosensitizer. Upon exposure to near-infra-red radiation, the nanoparticles emit ultraviolet or blue visible light that activates the curcumin to generate reactive oxygen species for microbial inactivation. The mesoporous silica shell and polymer matrix immobilize the active components and prevent migration into the food product. The film is applicable for food packaging, post-harvest handling, and coldchain storage applications."
Disclaimer: Curated by HT Syndication.
