Date of Award


Degree Type

Bachelors Essay

Degree Name

Bachelor of Science (BS)



First Advisor

John R. Koch


An interest was first aroused in this problem by Mr. Lawrence Ehrnst of the Froedtert Malting Company who has been interested for some time in devising a method for determining the peptic power of malt. Through the cooperation of Dr. J. R. Koch, the author's major professor, a study of the Wahl Peptase Test was made possible.

Anyone who attempts the study of enzymes is confronted with the various factors inhibiting enzyme action. Also, the seemingly contradictory results of different investigators is somewhat confusing. This may be attributed to the difficulty of repeating identical experimental conditions, for enzymes are very sensitive to outside factors which affect enzyme action.

This work on the analysis of the Wahl method is but a part of a series of investigations to be carried on in an attempt to obtain a satisfactory test for the peptic power of malt. A complete study of the Wahl method was impossible because of the limited time.


A Thesis submitted to the Faculty of the College of Liberal Arts of Marquette University in Partial Fulfillment of the Requirements for the Degree of Bachelor of Science