 the interactions between CS:TPP nanoparticles and mucin were evaluated  the degree of interaction depends on the CS:TPP ratio, -potential and viscosity  a CS:TPP ratio of 4:1 displayed the strongest interaction with mucin  greater mucin binding efficiencies achieved at CS:TPP ratios of 4:1 and higher  a minimum CS:TPP ratio of 4:1 is required for stable interactions with mucin 3

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32Chitosan (CS) is a cationic polymer with excellent film, gel and particle-forming properties. 33This polymer has been investigated widely for its potential in the development of food and 34 drug delivery systems and pharmaceutical applications, however it has not generally been