Definition of Extrusion Cooking Technology, the Food Industry in Focus: A Review

Abstract

The aim of this paper was to review the different definitions of extrusion cooking of food available in literature. Extrusion cooking of food entails different unit operations in a single process whereby different food ingredients are uniformly mixed and forcefully passed through a die. It has been used in producing various shapes and sizes of food products. Extrusion technology is mostly applied in the manufacture of snacks, breakfast cereals and ready-to-eat food products and the more modern 3D breakfast cereals and snacks. Extrusion cooking involves a high temperature short time process and is very useful in producing low-fat snacks. Extrusion cooking of food entails different unit operations in a single process. An extruder has five major components, pre-conditioner, barrel, screw, die