MUMBAI, India, Sept. 14 -- Intellectual Property India has published a patent application (202631105800 A) filed by Birla Institute Of Technology, Mesra on September 02, 2026, for A Method For Producing Natural Pigments From Food Waste-Derived Bacterial Strains.
Inventors include Sayantika Majumdar; Anushka Satpathy; Aastha Srivastava; and Dr. Vinod Kumar Nigam.
The application for the patent was published on September 11, 2026, under issue no. 37/2026.
Abstract: A METHOD FOR PRODUCING NATURAL PIGMENTS FROM FOOD WASTE-DERIVED BACTERIAL STRAINS Disclosed method (100) to produce natural pigments from food waste-derived bacterial strains, comprising incubating, upon inoculating raw unprocessed food waste into a nutrient medium, to obtain a primary bacterial culture. The method (100) further comprising incubating, upon plating diluted primary bacterial culture on a solid nutrient medium, to obtain a plurality of bacterial colonies. Furthermore, the method (100) comprising streaking a sample from a blue-black pigmented colony from the plurality of colonies into a second pure culture. Furthermore, the method (100) comprising incubating, upon inoculating the second pure culture into a nutrient medium to obtain a pigment-containing culture broth. Furthermore, the method (100) comprising re-incubating the broth, seeing a colour change, upon re-inoculating into the nutrient medium. Furthermore, the method (100) comprising obtaining the blue pigment by separating it from a biphasic system, prepared upon mixing a pigment-containing supernatant, harvested by centrifugation of the broth, with an organic solvent.
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