Applying high-pressure processing (HPP) at 200–300 MPa for just 2 minutes measurably increased resveratrol content and amplified antioxidant capacity across five assays—DPPH, ABTS, FRAP, CUPRAC, and DMPD—while simultaneously boosting inhibition of α-glucosidase, cholesterol esterase, and pancreatic lipase. Higher pressures (400–600 MPa) or longer exposures degraded these benefits, revealing a clear pressure-duration optimum. PCA and heatmap analysis confirmed tight co-clustering of antioxidant and enzyme-inhibition outcomes.
Resveratrol's therapeutic ceiling has long been limited by poor bioavailability and stability during food processing, making this a practically relevant finding for the functional-food industry. The three enzyme targets—α-glucosidase, cholesterol esterase, and pancreatic lipase—are the same pathways exploited by acarbose, ezetimibe-adjacent mechanisms, and orlistat respectively, placing HPP-optimized resveratrol squarely in the metabolic syndrome intervention space. Unlike heat-based extraction methods that degrade polyphenols, HPP is a cold, additive-free technique, supporting clean-label formulation.
Critical caveats: this is an in vitro study on isolated resveratrol, not a food matrix or biological system. Enzyme inhibition in a test tube does not guarantee meaningful postprandial glucose or lipid modulation in humans. The mechanistic basis—whether HPP alters resveratrol's conformational state, aggregation, or isomeric ratio—remains uncharacterized. Incremental rather than paradigm-shifting, this work nonetheless offers food technologists a precise, reproducible processing window to maximize polyphenol functionality without synthetic additives.
