The influence of modified starch and vitamins A and E diet level on the bioavailability of these vitamins and blood antioxidant status of rats
The employment of modified starch, as compared to unmodified starch caused a decrease of feeding efficiency and a limitation of weight gain. There was noticeable, but not statistically significant, a decrease of transit time by the intestinal tract observed. Groups of animals that were fed higher levels of dietary vitamins had significantly higher plasma levels of vitamin E and higher levels of both vitamins A and E in the liver. The starch source had no influence on the above parameters with the exception of significantly higher vitamin E content in the liver of animals fed with modified starch. Neither of the investigated factors had an influence on the plasma superoxide dismutase activity, plasma lipid hydroperoxides or hydrogen peroxide levels of the rats. However, plasma catalase activity of rats fed with modified starch was significantly lower.