**2.7 Types of extruders**

Two types of extruders are used for food production: (i) single-screw extruders and (ii) twinscrew extruders. Single-screw extruders are the most common extruders used in the food industry. Twin-screw extruders are used for high-moisture extrusion, products that include higher quantities of components such as fibres, fats, etc. and more sophisticated products.
