Functionalities of Polysaccharides Modified with Gallic Acid.

This research aimed to modify polysaccharides extracted from the edible mushroom with gallic acid (GA) and to complex them with zinc ions. The functionalities of the modified polysaccharides (TFPs) were investigated. Regarding antioxidant activity, TFP-GA demonstrated effective scavenging activity against DPPH radicals, nitric oxide, and hydrogen peroxide. Additionally, TFP-GA exhibited superior reducing ability toward Fe and enhanced chelating activity toward Fe compared to unmodified TFP. Notably, the TFP-GA conjugate outperformed GA in Fe-chelating activity. In terms of antimicrobial activity, the TFP-GA-Zn complex showed significantly improved antimicrobial effectiveness against and compared to TFP-GA.