Effects of polysaccharide charge density on the structure and stability of carboxymethylcellulose-casein nanocomplexes at pH 4.5 prepared with and without a pH-cycle

Carboxymethylcellulose (CMC) can stabilize acidic casein dispersions but the CMC charge density effect has not been studied. The objective of the present work was to study the structure and stability of CMC-casein nanocomplexes at pH 4.5 using CMC with the degree of substitution (DS) of 0.7, 0.9, and 1.2. Dispersions were prepared at 1%w/v casein and casein:CMC mass ratios from 5:1 to 1:1 with and without a pH-cycle. The calcium chelating...