QUANTITATIVE CHROMATOGRAPHIC-SEPARATION O F MILK-PROTEINS

Samples of milk were taken from 778 black pied cows and 368 cows of th e Angler breed during the period from January to May 1990, and analyse d concerning their protein fraction contents by means of HPLC. It was found that the protein fraction contents varied considerably between c ows. They depended on the herd level, the stage of lactation and the c ows' age as well. The High Performance ion-Exchange Chromatography of the major bovine milk proteins is an alternative method to the electro phoresis with densitometry for the qualitative and quantitative analys is of milk proteins. The successful separation and identification of w hey proteins and caseins showed us that with this method complex biolo gical systems could be analysed.