https://wiki.tiffa.net/w/index.php?action=history&feed=atom&title=Translations%3ADietary_fiber%2F37%2Fen 2026-05-15T14:20:53Z Revision history for this page on the wiki MediaWiki 1.43.0 https://wiki.tiffa.net/w/index.php?title=Translations:Dietary_fiber/37/en&diff=74450&oldid=prev 2023-11-03T23:14:58Z

<p>Importing a new version from external source</p> <p><b>New page</b></p><div>Two mechanisms bring nutrients into contact with the epithelium:<br /> # intestinal contractions create turbulence; and<br /> # convection currents direct contents from the [[lumen (anatomy)|lumen]] to the epithelial surface.<br /> The multiple physical phases in the intestinal tract slow the rate of absorption compared to that of the suspension solvent alone.<br /> # Nutrients diffuse through the thin, relatively unstirred layer of fluid adjacent to the epithelium.<br /> # Immobilizing of nutrients and other chemicals within complex polysaccharide molecules affects their release and subsequent absorption from the small intestine, an effect influential on the [[glycemic index]].<br /> # Molecules begin to interact as their concentration increases. During absorption, water must be absorbed at a rate commensurate with the absorption of solutes. The transport of actively and passively absorbed nutrients across epithelium is affected by the unstirred water layer covering the [[microvillus]] membrane.<br /> # The presence of mucus or fiber, e.g., pectin or guar, in the unstirred layer may alter the viscosity and solute diffusion coefficient.</div>

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