Dilworth, Lowell L.; Omoruyi, Felix O.; Asemota, Helen N.
Author Affiliation, Ana.
Digestive and transport enzymes in rats fed Phytic acid exttract from sweet potato Ipomoea batatas
Date of Publication
Phytic acid was extracted from sweet potato (Ipomoea batatas) and fed to wistar rats with or without zinc for three weeks. Animals were then sacrificed and blood glucose, bone zinc and calcium levels were assessed. Intestinal disaccharidases and Na+/K+ ATPase activities were determined. All groups fed phytic acid extract from sweet potato displayed low blood glucose levels compared to their controls. However, it was more pronounced in the groups fed zinc supplement along with phytic acid. There were no significant changes in the activities of intestinal disaccharidases in study groups. The supplemented diets significantly reduced Na+/K+ ATPase activity in lower intestine compared to controls. The consumption of supplemented diets did not show any adverse effects on bone minerals in rats. In conclusion, this study showed the rate of absorption to be stepped down as demonstrated by the observed decrease in the activity of the transport enzyme, Na+/K+ ATPase leading to a blood glucose decrease. The consumption of Jamaica sweet potato with a high phytic acid to zinc ratio may not adversely affect bone minerals in rats.....