MUMBAI, India, April 17 -- Intellectual Property India has published a patent application (202611004663 A) filed by Panjab University, Chandigarh, India, on Jan. 16, for 'a system for ultrasensitive detection of erythrosine in watermelon juice using fluorescent nanostrips/nano-flostrips.'
Inventor(s) include Kamaljit Kaur; Nishima Wangoo; and Prabaljeet Singh.
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 a fluorescence-based sensing system for ultrasensitive detection of the synthetic food dye erythrosine in food and beverage samples. The system comprises a terbium-based metal-organic framework (TbMOF) immobilized within a poly(vinyl alcohol)/cellulose nanocrystal (PVA/CNC) composite to form a flexible, paper-like fluorescent nanostrip. The Tb-MOF exhibits strong green fluorescence under ultraviolet excitation, which is selectively quenched upon interaction with erythrosine molecules. The fluorescence response shows a concentration-dependent decrease in emission intensity, following a Stern-Volmer relationship, enabling quantitative detection with a detection limit of about 1.71 pM. Tb-MOF demonstrates high selectivity toward erythrosine over common food constituents and interfering species, along with good stability and reproducibility. The Tb-MOF embed nanostrip enables rapid, portable, and smartphone-assisted analysis of real food samples without extensive sample preparation. The invention provides a simple, sensitive, reusable, and field-deployable approach for on-site monitoring of erythrosine in food and beverage products."
Disclaimer: Curated by HT Syndication.
