Besides of PSD, Z-average size and PDI, zeta potential is a scientific term for electrokinetic potential in colloidal systems.
Its value can be significantly related to the stability of colloidal dispersions and indicate the degree of repulsion between adjacent materials and similarly charged particles. For molecules and particles that are small enough, a high zeta potential will confer stability.
The solution or dispersion will resist aggregation. When the potential is low, attraction exceeds repulsion and the dispersion will break and flocculate.
Changes of zeta potential values of the egg white solution during PEF processing were determined (Table 3).
The initial zeta potential was 7.76 mV, and it increased to 8.02 mV after treatment at 25 kV/cm for 200 ls.
Prolonging processing time (400, 600, 800 ls) had no obvious effect but led to a small increase of the zeta potential value.
This means that the stability and electrokinetic potential of the solution be maintained good during PEF processing.