Preconditioning for extrusion of aquafeed – Part 2

Preconditioning, as applied in the manufacture of feed, involves adding moisture and heat to the feed formulation before extrusion (or pelletising). In the second part of this article, we explain the key parameters and the different types of preconditioners. In Part 1, we explained what preconditioning is and what its benefits are. But what are the key preconditioner operating parameters? For the cooking reactions to occur within the formulation, two key parameters need to be controlled and opt