Journal
FOOD CONTROL
Volume 14, Issue 5, Pages 307-315Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0956-7135(02)00095-6
Keywords
bovine caseins; capillary electrophoresis; factorial design; response surface modelling
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Central composite design and response surface methods were applied to optimise and assess the robustness of a capillary zone electrophoresis method for the separation of bovine caseins. Buffer pH, running voltage and polymeric additive buffer concentration were the parameters selected for this study. Successful results were obtained at 18.5 kV, with 10 mM phosphate buffer at pH 3.0 with 0.05% (w/v) hydroxypropyl methyl cellulose. Under these optimised conditions alpha(s)-casein (CN), beta-CN and kappa-CN and the various phosphorylation states of the alpha(s1)-CN and alpha(s2)-CN, as well as, some genetic variants of beta-CN (A(1), A(2) and B) were well separated. (C) 2002 Elsevier Science Ltd. All rights reserved.
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