Comparative Studies of Non-digestible Polysaccharides: Wheat and Potato Resistant Starch and Pectin on Glycemic, Lipemic, Blood Urea and Intestinal Parameters in Growing Rats

摘要

The influence of non-digestible polysaccharides on gastrointestinal parameters, serum and liver lipids, serum urea and blood glucose parameters were evaluated in growing rats during a 6 weeks experimental period. The polysaccharides consisted of either plain wheat starch (Digestible Starch, DS) control diet, or starch substituted with 12% of either Wheat Resistant Starch (WRS), Potato Resistant Starch (PRS) or Pectin (P). Body weight gain and food intake were not significantly affected by the experimental diets. The length of the small intestine was also not affected by the different diets. The caecal weight was significantly increased (p blood glucose was significantly reduced in WRS and P fed groups compared with the control and PRS groups (p blood glucose (p blood glucose concentrations were significantly lowered in WRS and P fed groups compared with the control and PRS groups (p < 0.001). The present study suggests that non-viscous resistant starch; shares some of the physiological properties of non-starch polysaccharides and have similar metabolic effects, which may be of importance in the dietary control of certain disease conditions.