Affinity Chromatography of Ovine Casein
Open Access
- 1 July 1990
- journal article
- research article
- Published by American Dairy Science Association in Journal of Dairy Science
- Vol. 73 (7) , 1707-1711
- https://doi.org/10.3168/jds.s0022-0302(90)78847-9
Abstract
Sheep milk casein was separated into two fractions: one containing .alpha.s1-plus .beta.- and the other .alpha.s2 plus .kappa.-caseins by affinity chromatography on activated thiol-Sepharose 4B. Milk samples were from the Leccese breed with the most common electrophoretic pattern. Electrophoresis of the chromatographic fractions on SDS-PAGE and on starch urea gel at pH 8.6 and 1.7 clarified the electrophoretic pattern of whole casein. Acidic pH electrophoresis of the two fractions obtained by affinity chromatography may be useful for investigations on the polymorphism of the casein fractions.Keywords
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