Abstract

The primary function of the stomach being to digest protein, it would be desirable to be able to determine the actual accomplishment of the stomach in health and disease as far as protein digestion is concerned, instead of relying on acidity determinations as an indication. Determinations of the ratio of soluble to insoluble protein in gastric contents following a test meal might give useful information provided that the gastric contents remained a uniform suspension, and provided solid and liquid left the stomach at the same rate. On the other hand, if insoluble iron oxide were mixed with the flour and baked into the bread used as a test meal and if this oxide adhered to the undissolved portion of the gastric contents, the ratio of undissolved protein to iron would enable one to determine the percentage of protein of the test meal that had been put in solution by the gastric juice, and such a result would be fairly accurate whether or not there were stratification of gastric contents or selective evacuat...

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