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UBC Theses and Dissertations

Investigations into the constitution of casein Hummel, Brian Christopher Warren


A comparison of the products obtained by two methods of fractionation of casein indicate that the methods do not give the same results. An electrophoretically homogeneous fraction yielded, upon hydrolysis with pepsin, at least two phosphopeptones. The one having an N/P ratio of 6.6 was shown by filter paper partition chromatography and qualitative colour tests to be composed of serine, cystine, glutamic acid, alanine, one or more of the leucines, tyrosine, and possibly valine and arginine.

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