Characterization and Utilization of Soy Flour Produced from Extrusion-Expelling Processing
The number of extrusion-expelling (E-E) plants, often referred to as "mini-mills", built to process soybeans produced in local areas has been increasing. E-E processing is a mechanical processing, and it has several advantages over conventional processing methods. E-E mills, such as the Express System (Insta-Pro Div., Triple "F", Inc., Des Moines, Iowa), are relatively small, with capacities ranging from 6 to 120 tons/day. They require low initial capital investment ($150,000-200,000) and have relatively low operating costs ($25/ton) as described by Nabil Said (inform 9:139-144,1998). E-E mills can be used for processing identity-preserved (IP) soybeans. Large-scale solvent extraction (SE) facilities are usually not designed for IP seeds because of their low production tonnage while these seeds are being developed, and because of the large number of value-added traits being developed.
This article is published as Wang, T., D. J. Myers, and A. A. Heywood. 2002. Functionality and utilization of soy flour produced from extrusion-expelling processing. Inform 13:708-713. Posted with permission.