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Optimization of Extrusion Process for Production of Ginseng-Corn Pellets

LIU Ting-ting,ZHANG Fei-jun,CAI Yuan,WANG Da-wei   

  1. College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China
  • Online:2013-08-25 Published:2013-09-03

Abstract:

Ginseng-corn pellets were made from corn meal and ginseng powder by repeating extrusion twice. The extrusion
process was optimized using a three-variable, three-level response surface design. Second extrusion temperature had the
greatest effect on cooking tolerance of extruded pellets followed by water addition and first extrusion temperature. The
optimum extrusion conditions the provided the best cooking tolerance (93.14%) were extrusion at 140 ℃ and re-extrusion at
105 ℃ with the addition of 22.5% water. Under these conditions, excellent texture properties were obtained.

Key words: extrusion, ginseng-corn pellets, cooking resistance, response surface methodology