MUMBAI, India, Dec. 13 -- Intellectual Property India has published a patent application (202511102850 A) filed by Manoj Kumar Meena; Mangal Sukhi Meena; Aliza Mariyam; Deepak Singh; Rajnish Kajala; Dr. Devendra Jain; Dr. Deepak Rajpurohit; Dr. Sujit Kumar Yadav; and Divy Raj Singh Chundawat, Udaipur, Rajasthan, on Oct. 25, for 'a chitosan-coated custard apple (annona squamosa) seed oil-based nano-emulsion and method for preparation thereof.'
Inventor(s) include Manoj Kumar Meena; Mangal Sukhi Meena; Aliza Mariyam; Deepak Singh; Rajnish Kajala; Dr. Devendra Jain; Dr. Deepak Rajpurohit; Dr. Sujit Kumar Yadav; and Divy Raj Singh Chundawat.
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 invention relates to a chitosan-coated oil-in-water nano-emulsion of custard-apple (Annona squamosa) seed oil and a process for its preparation. The composition comprises custard-apple seed oil containing acetogenins and squamocins dispersed in Span-20, Tween-80, PEG-400, ethanol, and water, the droplets being coated with a chitosan layer formed in dilute acetic acid and plasticised with glycerol. The process includes sequential mixing of surfactant phases, controlled oil addition, ultrasonic homogenisation, and chitosan coating to yield nanosized droplets of 25-150 nm with positive zeta potential above +10 mV. The nano-emulsion demonstrates high stability exceeding six months and enhanced biological activity, providing up to 95 % insect mortality and over 60 % fungal inhibition at low concentrations. The invention offers a scalable, eco-friendly formulation useful as a natural pesticide and antimicrobial coating for agricultural and food-storage applications."
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