Extruders For Producing Snacks

Extrusion is a mechanical process in which certain materials are forced, under pressure, through a die opening to create products of a desired shape, size, and/or texture. In the case of food production, if the food is heated by external heaters during the process, it is referred to as extrusion cooking, a relatively new and advanced food processing technique. Due to its processing flexibility, extrusion cooking produces an incredibly broad range of food products, most notably in the cereal, dairy, bakery, and confection industries. Legume flours are often used as the basis for formulations that are extruded in low pressure systems. The flour is mixed with water and other starch-based ingredients to achieve a level of dough consistency that is suitable for extruding and will produce a texture and taste that is acceptable to consumers.

Extrusion is referred to as a system of propelling mixed ingredients out through a small opening, called a die, to form and shape the materials. The formed products are then called extrudates. The first extruders for food processing were piston and ram-type extruders for processing meats and sausages. Food extrusion is a part of the food processing process which aids in developing food a specific way, and later bringing it to defined sizes majorly with the help of blades. Breakfast cereals, confectionery products, baby foods, and different kinds of pasta make important applications of the food extrusion mechanism. Additionally, food extrusion helps in overthrowing the number of microorganisms in foods when treated at high temperatures and removes natural toxins, thereby preparing the foods safer for utilization. Food extrusion provides beneficial significances such as high productivity, versatility, energy efficiency, cheaper cost, and low space requirements. These features help to produce an extensive variety of food with greater production capability.