Polygalacturonic acid (Galacturonic acid polymer) is a transparent, gel-like polymer that constitutes a key component of the plant cell wall, and Polygalacturonic acid has been applied in the synthesis of silver nanoparticles (AgNPs), acting as an antioxidant and anti-inflammatory agent to protect cells from ROS-induced damage and promote wound healing, while Polygalacturonic acid nanoparticles additionally exhibit antimicrobial properties, providing multifunctional applications in biomedical research and nanomaterial development.