Mass Transfer in Liquid Food from a Single Layer Package

3 Mass Transfer in Liquid Food from a Single Layer Package 

This is the most common case of release of some additives taking place from the polymer package into a liquid food. The process, controlled either by diffusion through the thickness of the package or by convection at the solid-liquid interface, has been described in Chapter 1, as well as in Section 4.2. 

1 Theoretical for a Single Layer Package in Contact with Liquid Food 

Depending on the volume of the liquid food, and especially on the ratio of the volumes of the liquid and of the package, a, two ways of calculation are possible. 

When a 20-50, depending on the accuracy required, the mathematical treatment is feasible, leading to the equation for the kinetics of release of the additive  

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