抄録
Lipase activity was measured of various digestive enzyme preparations in the gastric and intestinal juice in terms of the pH values. As compared with the lipase activity of pancreatin (J. P. VIII) as control, the tested preparations might showed a similar activity at pH 3-8 in the gastric juice, and a high activity at pH 7-8 in the intestinal juice. In a comparative study of the lipase activity of the preparations in different lot numbers, it can be said that the activity of newer preparations was not always higher (though only 2 kinds of tablets were compared with pancreatin). Before drawing conclusion on the matter, the storage condition of the preparations must be taken into consideration.