MUMBAI, India, Jan. 7 -- Intellectual Property India has published a patent application (202511103974 A) filed by Pramendra Kumar; Brijesh Kumar; Narendra Singh; and Mohattib Ali, Bareilly, Uttar Pradesh, on Oct. 28, 2025, for 'biodegradable sodium alginate and deacetylated gum karaya composite films with citric acid crosslinking for packaging.'
Inventor(s) include Pramendra Kumar; Brijesh Kumar; Narendra Singh; and Mohattib Ali.
The application for the patent was published on Dec. 12, under issue no. 50/2025.
According to the abstract released by the Intellectual Property India: "The present disclosure relates to biodegradable composite films comprising sodium alginate (SA) and deacetylated gum karaya (DGK), optionally cross-linked with citric acid (CA) and plasticized with glycerol. The films are prepared by deacetylating gum karaya, blending it with sodium alginate in defined ratios, and casting into films, with citric acid forming a three-dimensional ester-bonded network that enhances mechanical strength, water resistance, and thermal stability while reducing solubility at neutral pH. Glycerol imparts flexibility and reduces brittleness. The resulting SA-DGK and SA-CA-DGK films exhibit high transparency, low haze, and antibacterial activity against food-borne pathogens such as Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa. Soil burial tests demonstrate substantial biodegradation within 35 days, and fruit packaging studies confirm extended shelf life and preservation of visual quality. These films are fully biodegradable, non-toxic, and eco-friendly, offering a sustainable and versatile alternative to conventional synthetic packaging materials for food-contact applications."
Disclaimer: Curated by HT Syndication.
