MUMBAI, India, Jan. 23 -- Intellectual Property India has published a patent application (202511125307 A) filed by Graphic Era Hill University, Dehradun, Uttarakhand, on Dec. 11, 2025, for 'a method of extraction of a nerium oleander-derived polysaccharide biopolymer for biomedical applications.'
Inventor(s) include Karabi Kalita; and Deepika Raina.
The application for the patent was published on Jan. 23, under issue no. 04/2026.
According to the abstract released by the Intellectual Property India: "The invention relates to a purified polysaccharide matrix (10) extracted from Nerium oleander leaves, characterized by a plant-derived backbone with ester, ether, and hydroxyl functional groups. The matrix exhibits a moisture content of approximately 3.20%, a heavy metal content near 3 ppm, water dispersibility of about 85.36%, and alcohol compatibility of approximately 83.97%. Preparation involves controlled collection, washing, low-humidity drying, and mechanical grinding, followed by extraction with an aqueous or mild organic solvent at a pH of about 5.01. Filtration, centrifugation, and purification via dialysis or membrane filtration remove insoluble residues. FTIR, DSC, and NMR analyses confirm the presence of functional groups, glycosidic linkages, and thermal stability up to 150 C, making the biopolymer suitable for biomedical formulations such as hydrogels, films, coatings, scaffolds, and controlled-release drug delivery systems."
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