Profiling of modified citrus pectin oligosaccharide transport across Caco-2 cell monolayers

► Bioavailable oligosaccharides from modified citrus pectin not characterised. ► Transwell-grown Caco-2 cells used as model of intestinal oligosaccharide transport. ► Short-chain galactans and arabinogalactans transported via the paracellular pore. ► Oligogalacturonides were not transported. ► Transported galactans and arabinogalactans structurally characterised by LC-MS/MS.