Journal of Dairy Science Vol. 33 No. 5 275-280
© 1950 by American Dairy Science Association ®
Electrophoresis of Milk Proteins. I. Some Comparisons of Salt-Acid and Salt-Lyophilized Whey Fractions1,2
William G. Stanley,
A. C. Andrews and
C. H. Whitnah
Department of Chemistry, Kansas State College, Manhattan
ABSTRACT
- Electrophoretic patterns were obtained for whey proteins. These proteins were prepared by two different procedures, namely, salt-acid and salt-lyophilized.
- Six electrophoretically distinguishable components were split off by electrophoresis of these whey proteins.
- No qualitative difference in whey proteins prepared by these methods was recognized.
- The electrophoretic concentration of euglobulin by the salt-acid method was less than half the salt-lyophilized value, while for pseudoglobulin the salt-acid value was nearly double the salt-lyophilized.
- The change of concentration could have been due to action of HC1 upon the immune lactoglobulins.
- Relative percentages of component areas from salt-lyophilized proteins agreed qualitatively with those obtained by Smith and only for one component did areas from salt-acid proteins agree better with the data of Smith and of Deutsch.
FOOTNOTES
1 Contribution no. 399. Department of Chemistry, Kansas Agricultural Experiment Station, Manhattan.
2 This paper contains part of the material presented by William G. Stanley in a thesis for the Master of Science Degree at Kansas State College. 1950.
Copyright © 1950 by the American Dairy Science Association ®.