MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202641123796 A) filed by Vellore Institute Of Technology on October 15, 2026, for Process For Preparing Chitosan Nanoparticles Using Piper Longum Fruit Extract.
Inventors include Abul Kalam Azad Mandal; and G Vimal Kumar.
The application for the patent was published on October 23, 2026, under issue no. 43/2026.
Abstract: ABSTRACT PROCESS FOR PREPARING CHITOSAN NANOPARTICLES USING PIPER LONGUM FRUIT EXTRACT The present disclosure relates to a process (100) for preparing chitosan nanoparticles. The process (100) includes an extract preparation step (102) of preparing an aqueous plant extract by boiling dried Piper longum fruit in water and filtering, a chitosan dissolution step (104) of dissolving chitosan in a dilute acidic aqueous medium to form a chitosan solution, and a pH adjustment step (106) of adjusting a pH of the chitosan solution with a base. In a first-stage addition step (108), the aqueous plant extract is added to the chitosan solution at a controlled rate under continuous stirring to form a nanoparticle suspension, and the chitosan nanoparticles are formed at room temperature. The chitosan nanoparticles are then recovered from the nanoparticle suspension. The aqueous plant extract serves as the sole agent for formation, stabilization, and surface capping of the chitosan nanoparticles, and the process (100) is free of any separately added chemical crosslinker, chemical stabilizer, and metal precursor. (Fig. 1)
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