Abstract
The effect of some nutrients and foods such as dextrin, corn oil, sodium chloride, lemon juice, green tea or Sake on protein digestion in vivo were studied. By use of a stomach tube rats were given egg albumin supplemented with each of the nutrients or foods, and killed after 1 hour. Then the nitrogen contents in the stomachs and small intestines of the rats were measured.
Dextrin, lemon juice and Sake had an effect of increasing the residual nitrogen contents in the stomach and of decreasing those in the small intestine, although the total residual nitrogen contents of the two tracts were similar. Corn oil, sodium chloride and green tea increased the residual nitrogen contents in the stomach only and, therefore, increased the total residual nitrogen contents in the two tracts.
These results seem to show that all the nutrients and foods examined may inhibit the rate of digestion of proteins in the stomach or the rate of passage of protein digests from the stomach to the small intestine.
