Explain the Adsorption or Binding Ability?
Some fibre components have the ability to bind (adsorb) substances in the gastrointestinal tract. Wheat bran, guar gum, mannan and isolated lignin have been shown to bind bile acids in small intestinal contents. In humans, pectin, guar gum, oat bran and wheat bran have been shown to increase faecal bile acid excretion. Among the fibre components, pectin and lignin seem to have the greatest ability to absorb bile acids.