The surface and electrokinetic properties of chitosan−TiO 2 biomaterial have been investigated. Both carbohydrate polymer and titanium dioxide demonstrate unique physicochemical properties appropriate for biotechnological applications. However, the changing stability of such systems restricts its usage. Improved stability can be controlled by environmental parameters, process conditions, or modifying TiO 2 structure. Antibacterial chitosan was used because its protective barrier can retard ripening, water loss, as well as destruction of products. The concentrations of compounds and solution pH were varied. Static and dynamic light-scattering measurements make evident the relationship between the state of aggregation of the suspensions and the stability. The chitosan−TiO 2 system is characterized by improved physicochemical properties in comparison with base TiO 2 as an effect of electrosteric stability. Stable material was obtained with the precisely selected compounds ratio, proved by Fourier transform infrared spectroscopy methods, which can be developed because of valuable properties of the individual components along with synergistic effects.

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