MUMBAI, India, Sept. 22 -- Intellectual Property India has published a patent application (202541086832 A) filed by Dr. J. Usha Rani; Dr. V. Srilekha; and Dr. Bitragunta Siva Prasad on September 12, 2025, for "optimizing Microbial Pigment Production: Enhancing Arthrobacter Gandavensis - Derived Natural Dyes For Industrial Applications".
Inventors include Dr. J. Usha Rani; Dr. V. Srilekha; Dr. Bitragunta Siva Prasad; Ms. I. Sai Jayasri; Mr. Rudra Rai; and Tammareddy Nishitha.
The application for the patent was published on September 18, 2026, under issue no. 38/2026.
Abstract: OPTIMIZING MICROBIAL PIGMENT PRODUCTION: ENHANCING ARTHROBACTER GANDAVENSIS-DERIVED NATURAL DYES FOR INDUSTRIAL APPLICATIONS A method for producing a natural orange microbial pigment from Arthrobacter gandavensis is disclosed. The method comprises culturing the bacterium in an aqueous medium comprising approximately 0.5% glucose and approximately 0.5% peptone at approximately pH 8.0, approximately 30°C and approximately 150 rpm under low-salinity conditions, followed by alcohol-based recovery of the pigment. Under the reported optimized conditions, pigment production of up to approximately 18.9 mg/L is obtained. The recovered extract is characterized by UV-visible absorption features at approximately 219.84, 259.42 and 343.79 nm. The pigment demonstrates reported thermal, pH and ultraviolet stability under the tested conditions. The process provides a microbial route for production and recovery of a natural pigment for potential industrial colouring applications, subject to applicable safety and regulatory requirements.
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