MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202511123003 A) filed by Deen Dayal Upadhyaya Gorakhpur University on December 05, 2025, for A Multi-Metal Resistance Screening Plate For Identification Of Microorganisms Exhibiting Tolerance To Multiple Heavy Metals.
Inventors include Priyanka Bharti; and Sarad Kumar Mishra.
The application for the patent was published on October 23, 2026, under issue no. 43/2026.
Abstract: The present invention relates to a multi-metal resistance screening plate (101) designed for the rapid, simultaneous identification of microorganisms exhibiting tolerance to multiple heavy metals. The plate (101) comprises a radial sector arrangement (103) extending from a central inoculation point (102), wherein each sector contains a concentration gradient (104) of a distinct heavy metal selected from arsenic, cadmium, chromium, copper, mercury, lead, and nickel. The system employs a dual-layer agar structure, including a base nutrient layer (105) and a transparent overlay layer (106) impregnated with said metal gradients, enabling clear observation of microbial growth zones. Integrated colorimetric indicators (107) facilitate visual differentiation of metabolic activity and resistance thresholds, while diffusion barriers prevent cross-contamination between sectors. A stabilization system incorporating chelating agents, buffers, and preservatives ensures prolonged shelf life and consistent performance. The invention provides a standardized, cost-effective, and rapid platform for screening and quantifying heavy metal resistance, particularly beneficial in environmental microbiology and bioremediation research.
Disclaimer: Curated by HT Syndication.
