EFFECT OF MINERAL SALTS ON MOLECULAR STATE AND SOLUBILITY OF SODIUM COPRECIPITATE OF MILK PROTEINS

The solubility of sodium coprecipitate in water and in salt solution of the composition corresponding to simulated milk ultrafiltrate was studied at 3000, 8000, 19000 and 111000 g. The molecular state of protein determining the solubility was defined together with the contribution of Ca, Mg, P, K and Na to the formation of this state. The (Ca + Mg)(Na + K) weight ratio in the protein aggregates insoluble in the salt solution decrease with an increase in gravity. The constant (Ca + Mg)/N weight ratio and protein composition of the protein aggregates insoluble in the salt solution in the gravity ranging from 3000 to 110000 g suggested increased contributions of hydrophobic interactions and covalent bondings in the integration of protein particles as their size increased.

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eISSN:	2083-6007
ISSN:	1230-0322

W latach 2022-2024 kwartalnik naukowy Polish Journal of Food and Nutrition Sciences realizuje projekt nr RCN/SP/0520/2021/1 finansowany ze środków budżetu państwa – Ministerstwo Edukacji i Nauki w ramach programu „Rozwój czasopism naukowych”. Dofinansowanie wynosi 120 000 zł. W ramach projektu podejmowane są działania zmierzające do podniesienia poziomu praktyk wydawniczych i edytorskich, zwiększenia wpływu czasopism na rozwój nauki oraz utrzymania się czasopism w międzynarodowym obiegu naukowym.

In the years 2022-2024, the scientific quarterly Polish Journal of Food and Nutrition Sciences accomplishes a project no. RCN/SP/0520/2021/1 financed from the state budged – Ministry of Education and Science Republic of Poland in the framework of a program “Development of scientific journals”. The financing amounts to 120,000 PLN. The program aims at improving the level of publishing and editing practices, increasing the impact of scientific journals on science development, and extending the international range of scientific journals.