Sensory Characteristics and Impact of Flavanol-Rich Grape and Blueberry Extract on Blood Flow Velocity and Oxidative Stress

The results demonstrate that PEGB exhibited a pronounced astringent taste, O₂^•- production at low concentrations in neutral pH environments, and significantly enhanced blood flow to skeletal muscle following a single administration to rats. These findings highlight the necessity for further investigation into the causal relationships between oral perception, redox properties, and bioactivity of polyphenols.