MUMBAI, India, Jan. 2 -- Intellectual Property India has published a patent application (202541123166 A) filed by Senthil; Srm Institute Of Science And Technology, Faculty Of Science And Humanities, Ramapuram Campus,chennai; and Dr. S. Suresh, Chennai, Tamil Nadu, on Dec. 6, 2025, for 'sensor based management of relative humidity and metabolic heat in solid state fermentation.'

Inventor(s) include Dr. S. Suresh; and V. Gowridevi.

The application for the patent was published on Jan. 2, under issue no. 01/2026.

According to the abstract released by the Intellectual Property India: "Solid state fermentation is the most preferred fermentation strategy for the production of various commercial bioproducts like biofuel, fermented foods, enzymes like proteases, phytase, etc. It is preferred over other fermentation strategies for its ability to valorise dry agro-industrial wastes with almost no free flowing aqueous phase. But this also provides to its limitation i.e., there is no control over the metabolic heat dissipated, inability to control the moisture, relative humidity, aeration and the lack of uniformity of the reaction in the substrate due to absence of agitation. To address this many control strategies have been devised by modifying the design of the bioreactor or introducing additional changes like introduction of evaporative cooling, capillary water supply through water retention materials, forced aeration and agitation, etc. But this has not properly mitigated the limitations and was not sustainable for long term usage. To address these queries, in our invention, we have introduced a simple refrigeration system and a coupled humidifying and dehumidifying system integrated with the working of the bioreactor to control the temperature and relative humidity without actually interfering with the fermentation process. These systems work according to the real-time feedback provided by the sensors integrated so that there is continuous maintenance of the parameters to provide an uninterrupted fermentation process for high quality bio product recovery."

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