Cloudy apple juice colloidal particles

Stability of Cloudy Apple Juice Colloidal Particles Modeled with the Extended DLVO Theory... 

This behaviour ean be quahtatively explained by Equation (12.7) since 4>m increases as the width of the size distribution increases. A good example of the ef-feets that particles and polymers have on the rheological behavior of liquids is cloudy apple juice (Genovese and Lozano, 2000). The aqueous milieu of the juice is a solution of sugar, acids and salts (i.e., the clarified juice) that contains charged particles (0.25-5 pm in size) and pectin as a colloidal dispersion. The viscosity of cloudy apple juice has been described by the expression ... 

In general, in dispersions of fine particles in a liquid, frequent encounters between particles occur through Brownian motion. Whether such encounters result in permanent contact or whether the particles rebound and remain free is determined by the forces between them. A dispersion is colloidally stable when its particles remain permanently free. In dilute dispersions it is sufficient to consider only interactions between pairs of particles (Overbeek, 1977). This would be the case for cloudy apple juice (CAJ) where the volume fraction of particles is less than 0.5% (Genovese and Lozano, 2000). 

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