MUMBAI, India, July 31 -- Intellectual Property India has published a patent application (202411096754 A) filed by Lovely Professional University on December 07, 2024, for Eco-Friendly Method For Extracting Cellulose Nano-Fibrils From Cannabis Sativa Waste.
Inventors include Vineet Kumar; Simranjeet Kaur; Jeniva Jasmine; Daisy Rani; Sakshi Kushwah; Riya Tyagi; and Mandeep Kaur.
The application for the patent was published on July 24, 2026, under issue no. 30/2026.
Abstract: The present invention relates to an eco-friendly method for extracting cellulose nano-fibrils from Cannabis sativa waste, a process that efficiently utilizes agricultural biomass. The method involves drying the Cannabis sativa biomass to remove moisture, followed by immersion in a sodium carbonate solution to selectively solubilize non-cellulosic components such as hemicellulose and lignin, thereby preserving the cellulose structure. The extracted cellulose microfibers are then filtered, washed, and dried to achieve a highly crystalline and thermally stable product. These microfibers are pre-swelled in water to ensure uniform interaction with an ionic liquid, specifically 1-n-butyl-3-methylimidazolium chloride ([BMIM]Cl), which facilitates the dissolution of cellulose at a controlled temperature, resulting in cellulose nanofibrils with diameters ranging from 4 to 35 nm. The ionic liquid disrupts hydrogen bonds, aiding the transition to nanofibrils, and is recyclable, enhancing the method's sustainability.
Disclaimer: Curated by HT Syndication.
