Disacchandase Levels of the Rat Jejunum Are Altered by Dietary Fibre

Abstract
Rat jejunal disaccharidases were measured after feeding high fat fiber-free, high fat pectin, high fat cellulose, high fat galactomannan and high fat tannin diets for 27 wk. Compared with the high fat fiber-free diet, pectin lowered both lactase and sucrase levels (P < 0.025). Galactomannan and tannin lowered only the lactase level (P < 0.05), while cellulose had no significant effect on disaccharidase levels. Dietary fiber components apparently have individual and specific effects on jejunal disaccharidase levels, in the presence of a high fat diet.