STUDY OF THE POLYMORPHISM OF CAPRINE MILK CASEINS BY CAPILLARY ELECTROPHORESIS

Polymorphism of caprine milk proteins was studied by capillary electro phoresis. Identification of casein (CN) fractions was effected by usin g isolated fractions from cation-exchange fast protein liquid chromato graphy. Genetic polymorphisms in caprine alpha(s2)-CN, alpha(s1)-CN, b eta-CN and kappa-CN have been determined. kappa-CN A and B, beta-CN A and null, alpha(s2)-CN A, B and C, alpha(s1)-CN A, B, C and null, and other forms with intermediate and low alpha(s1)-CN content have been i dentified. The capillary electrophoresis method made it possible to an alyse whole caprine milk using simple sample preparation and was rapid , automated and suitable for phenotyping studies. This method may also permit the quantitative study of different protein fractions.