Study of olive pomace antioxidant dietary fibre powder throughout gastrointestinal tract as multisource of phenolics, fatty acids and dietary fibre

Pulp-enriched powder (POPP) was obtained from olive pomace solid fraction, a derived the new value chain established for by-products. As multifunctional powder, POPP retains several bioactive compounds (fatty acids, dietary fibre and phenolics) under potential synergic interaction, even more, reactive throughout digestion. So, in this study, multifunctionality of evaluated after gastrointestinal tract. A significant loss phenolics occurred during oral digestion (62.48%). However, role as phenolics’ carrier its possible liberation stomach allowed recovering amount (77.11%) bioaccessibility index at least 50% (mainly tyrosol glucoside). also provides high content mainly insoluble (69.68 g/100 g dry weight) linked to substantial bound (7.63 mg gallic acid equivalents/g weight), with positive effect on fatty acids [decreased saturated (5–6%) facilitated unsaturated (4–11%)]. PCA analysis became evident negative simulated upon loss. Despite all effects composition, showed be bioaccessible amount, associated retained colon have exert gut health benefits.