This study aims to structurally characterize a polysaccharide extracted from Cenostigma nordestinum gum (AGCn) and evaluate its prebiotic potential in human gut microbiota. AGCn, obtained by dissolution in water and precipitation in 70 % ethanol, was primarily composed of carbohydrates (93.61 %), with a low protein content (1.70 %) and some phenolic compounds (9.16 % Gallic Acid Equivalents). Its molecular weig...