Authored by two leading experts, this book provides responses to over 300 of the most frequently-asked questions about extrusion processing of food, pet food and feed products. The volume is in a unique, practical question-and-answer format and the enquiries are grouped into sections, making it easy for readers to find the information they require quickly. Topics covered include terminology relating to food extrusion, components of an extrusion system, selecting an extruder, the impacts of raw materials on the extrusion process, common problems at different stages of extrusion processing and common problems when using single screw and twin screw extruders, among others.
Key features: offers practical guidelines and rules of thumb for the most common food and feed extrusion problems; chapters concentrate on introductory queries, types of extruder and components of extruder systems, knife assemblies, the use of pre-conditioners and issues in drying extruded food products; provides responses to more than 300 frequently asked questions about the processes, equipment and techniques of food extrusion in a practical question-and-answer format.
Contents: Introduction to food and feed extrusion and related terminology; Components of a food or feed extrusion system; Selecting the right type of extruder: single screw and twin screw extruders for food and feed production; Selecting the right type of extruder: dry extruders and expanders for food and feed production; Impact of protein, starch, fat and fiber on extruded foods and feeds; Impact of particle size and other ingredients on extruded foods and feeds; Preconditioners in food and feed extrusion: Common problems and their solutions; Single screw extruders in food and feed extrusion: Common problems and their solutions; Twin screw extruders in food and feed extrusion: Common problems and their solutions; Die and knife assemblies in food and feed extrusion: Common problems and their solutions; Drying extruded food products: Common problems and their solutions; Practical considerations, rules of thumb and solutions to the most common problems in food and feed extrusion.
Mian N. Riaz is the Director of the Food Protein R&D Center and Head of the Extrusion Technology Program at Texas A&M University, USA. Galen J. Rokey is the Process Manager for the Pet Food Applications Group within Wenger Manufacturing.