MUMBAI, India, Sept. 12 -- Intellectual Property India has published a patent application (202441016264 A) filed by Central Sericultural Research And Training Institute, Mysuru, Karnataka, on March 7, 2024, for 'a method for extraction of chitin from silkworm residues.'

Inventor(s) include Madhusudhan K N; Manthira Moorthy S; Shivakumar M Hukkeri; Manjunath G R; and Gandhi Doss S.

The application for the patent was published on Sept. 12, under issue no. 37/2025.

According to the abstract released by the Intellectual Property India: "Disclosed is method (100) for the extraction of chitin from silkworm residues generated during silkworm rearing of the Mulberry silkworm (Bombyx mori L.). The method (100) includes drying (102) the silkworm residues, pulverizing (104), deprotenizing (106) the powdered residues in an aqueous solution of Na2SO3in the ratio of 1:20 w/v, incubating at 90 C to 100 C for 3.5 to 4.5 hours, and washing the filtered sediment until the removal of the alkaline condition to obtain chrysalis powder. The method (100) further includes demineralizing (108) the obtained chrysalis powder, after deprotenization, in an aqueous solution of HClin the ratio of 1:10 w/v, incubating for 1-3 hours at room temperature, decanting the HCl, collecting the residue, filtering, and washing the sediment with water,decoloring (110), incubating (112), filtering (114), and drying (116) to obtain chitin. will be the reference."

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