Molecular interactions between gelatin and mucin: Phase behaviour, thermodynamics and rheological studies

This work studies the interactions, thermodynamics, phase behaviour, and rheology of mucin/gelatin binary mixtures. Addition of gelatin in mucin solutions at pH 7 leads to aggregation and phase separation, while such phenomena are not observed at lower pH values. Zeta potential measurements show that electrostatic interactions lead to the formation of soluble complexes between the mucin and gelatin at pH 3. However, steric exclusions are the...