Interaction of nizkometilirovannyj pectins with a concentrate of proteins of whey

Potentiometric titration method was used to study quality complex formation between low methylated pectin and proteins concentrated from whey. It's shown that at рН>IEP of the lactoglobulin the interaction occurs between negatively charged chains of LM-pectin and positively charged patches of polypeptide chains. The biopolymers ratio had no significant effect on the initial pH of soluble complex formation (pHc); addition of sodium chloride decreased pHc and pK0 of complexes, which linked to electrostatic nature of complex formation between LM-pectin and whey proteins