MUMBAI, India, March 13 -- Intellectual Property India has published a patent application (202641024362 A) filed by Srm Institute Of Science And Technology; and Easwari Engineering College, Chennai, Tamil Nadu, on March 1, for 'development of a plasmonic biosensor for detection of emerging nucleic acid pollutants in wastewater.'

Inventor(s) include Dr. G. Kaladevi; and Dr. G. Venkat Kumar.

The application for the patent was published on March 13, under issue no. 11/2026.

According to the abstract released by the Intellectual Property India: "The present invention discloses a plasmonic biosensor system for the real-time detection of emerging nucleic acid pollutants in wastewater. The biosensor comprises a plasmonically active gold thin-film substrate functionalized with a nucleic acid-binding fluorescent dye, preferably SYBR Green, immobilized via a suitable linker chemistry. Upon exposure to wastewater samples, nucleic acids including pathogen-derived DNA/RNA, antibiotic resistance genes, and residual genetic materials bind to the immobilized dye, resulting in measurable changes in optical or electrochemical signals. The gold thin film enhances signal intensity through surface plasmon resonance and metal-enhanced fluorescence mechanisms, enabling highly sensitive and specific detection without nucleic acid amplification. The system is designed for integration into wastewater treatment plants for continuous monitoring of effluents. The invention provides a rapid, cost-effective, and portable platform for environmental surveillance, contributing to improved public health protection and sustainable water resource management."

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