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Journal of Dairy Science Vol. 46 No. 11 1189-1191
© 1963 by American Dairy Science Association ®
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Stabilization of ß-Casein by {kappa}-Casein Against Precipitation by Calcium Chloride

C. A. Zittle and M. Walter

Eastern Regional Research Laboratory,1 Philadelphia, Pennsylvania

ABSTRACT

ß-Casein (0.15%) at 30 C is 80% precipitated by 10 mM calcium chloride. {kappa}-Casein at a {kappa}/ß ratio of 0.15 will completely prevent the precipitation. This stabilization by {kappa}-casein is dependent on the concentration of ß-casein; when the concentration is 0.6%, the {kappa}-casein is considerably less effective. The stabilization is also pH dependent with the maximal effectiveness of {kappa}-casein at pH 7.0.

FOOTNOTES

1 Eastern Utilization Research at Development Division, Agricultural Research Service, USDA.






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Copyright © 1963 by the American Dairy Science Association ®.