FOOD SCIENCE ›› 2011, Vol. 32 ›› Issue (8): 159-162.doi: 10.7506/spkx1002-6630-201108036

• Processing Technology • Previous Articles     Next Articles

Effect of Extrusion on Properties of Soluble Dietary Fiber from Soybean Meal

LIU Han-wen,HUANG Liang-ce,CHEN Hong-xing,ZHENG Qing   

  1. College of Chemical and Biological Engineering, Yancheng Institute of Technology, Yancheng 224003, China
  • Online:2011-04-25 Published:2011-04-12

Abstract: In order to maximize the incremental rate of soluble dietary fiber (SDF) in soybean meal after extrusion, single factor and orthogonal array design methods were employed to optimize extrusion conditions. Starch added at a level of 20% was found to be the best swelling agent. After extrusion, pentose content in soybean meal displayed a larger increase than the contents of hexose and alduronic. The optimal extrusion conditions were material moisture content of 17%, screw speed of 150 r/min and temperature of 180 ℃. Under such conditions, the incremental rate of SDF was 199.64%, and the water holding capacity and swelling capacity of extruded soybean meal were 1430% and 16.7 mL/g, respectively, which were 94% and 125% higher than unextruded soybean meal.

Key words: soybean meal, extrusion, orthogonal experiment, soluble dietary fiber(SDF)

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