in the present investigation with rings of everted rat small intestine , carbohydrate gelling agents ( plant polysaccharides ) such as guaran , pectin , tragacanth , carubin and carrageenan were employed to study their direct effect on intestinal absorption of alpha-methyl-d-glucoside , d-galactose , l-leucine and l-phenylalanine .
C0032594
polysaccharides
C0007289
carrageenan