Formation, characterization and properties of resveratrol-dietary fiber composites: Release behavior, bioaccessibility and long-term storage stability

Abstract Resveratrol (Res) is a naturally occurring antioxidant with various health benefits, but the poor water solubility and low bioaccessibility of Res limit its application as a food additive. Corn soluble dietary fiber, resistant starch and resistant maltodextrin were used to increase the water solubility of Res via preparation of composite. High dissolution rate and rapid release was achieved for Res in the composites due to its increased water solubility, and the Weibull model was suitable for describing the release of Res from the composites. Additionally, the bioaccessibility of Res in composites was about 2.5 times that of raw Res. In storage experiments, the composites still exhibited good properties after 12 months of storage. The results indicated that Res-dietary fiber composites had good potential.