Extrusion-expelling

Extrusion-expelling concept is being used in the United States, Russia, and other countries to process soybeans and other oil seeds. Recently, extrusion-expelling technology has been adopted commercially by some soybean producers, grain elevators, entrepreneurs, and cooperatives in the United States and elsewhere... 

Extrusion-expelling technology is also being used in Russia, Latvia, Lithuania, and other newly independent states for extruding and expelling sunflower seed. The oil is being used for human consumption and meal for animal feed. Similar installations have been buUt to process rapeseed and peanuts (49). Table 6 shows the quality characteristics of soybean meals recovered in commercial practices by different oU-extraction processes. 

The advantages of using the extrusion-expelling method to make texturized vegetable protein are as follows (56) ... 

Solvent extraction Extrusion-expelling Screw pressing... 

Fig. 19.7. Correlation between trypsin inhibitor activity and alkaline (HOH) solubility, PDI, and RUP of soybean meals E-E designates extrusion-expelling and SE designates solvent extraction (Source Wang Johnson, 2001).

Heywood, A.A. D.J. Myers T.B. Bailey L.A. Johnson. Functional properties of low-fat soy flour produced by an extrusion-expelling system./. Am. Oil Chem. Soc. 2002c, 79, 1249-1253. 

Riaz, M.N. Extrusion-expelling of soybeans for texturized soy protein. Proceedings of the World Conference on Oilseed Processing and Utilization R. Wilson, Ed. AOCS Press Champaign, IL, 2001 pp. 171-175. 

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