MUMBAI, India, June 30 -- Intellectual Property India has published a patent application (202641073025 A) filed by Saveetha Institute Of Medical And Technical Sciences Simats on June 12, 2026, for Dual Sensor Qr Code Label Using Bio Inks For Intelligent Food Freshness Assessment(phreshcue).
Inventors include Ramaiyan Velmurugan; Renuka Devi. J; Shakthi. H; and Deepak Nallaswamy Veeraiyan.
The application for the patent was published on June 26, 2026, under issue no. 26/2026.
Abstract: ABSTRACT: The present invention relates to a dual-responsive smart freslmess label designed for real-time monitoring of food spoilage. The label integrates two chemically active sensing zones within a machine-readable QR matrix, enabling simultaneous detection of acidic and alkaline volatile compounds produced during different stages of food deterioration. Zone A, positioned at the top-left of the QR code, is printed with anthocyanin-ZnO pH-indicator ink, responding to acidic vapours generated in early spoilage. Zone B, at the bottom-right, contains curcumin nanocrystal ink for detecting alkaline gases such as ammonia released during advanced spoilage. The sensing inks are deposited on a biodegradable PLA substrate with a surface-treated layer to enhance adhesion, while the central QRmatrix ensures digital data encoding. Upon scanning with a smartphone, a web-based processing system analyses the colour changes in the sensing zones and provides an immediate freslmess assessment. The label offers a safe, eco-friendly, and non-destructive method for continuous food quality monitoring.
Disclaimer: Curated by HT Syndication.
