Rheological Studies on Barley Starch-Water Systems

보리전분 수용액계의 리올로지적 연구

  • Lee, Shin-Young (Department of fermentation Engineering, Kangweon National University) ;
  • Choi, Jun-Bok (Department of fermentation Engineering, Kangweon National University) ;
  • Chun, Byong-Ik (Department of fermentation Engineering, Kangweon National University)
  • 이신영 (강원대학교 발효공학과) ;
  • 최준복 (강원대학교 발효공학과) ;
  • 천병익 (강원대학교 발효공학과)
  • Published : 1985.06.01

Abstract

The rheological studies on dilute and concentrate solutions of naked and covered barley starches were carried out with various viscosimeters. The rheology of dilute solutions (0.05-0.3%) were characterized by intrinsic viscosity and related parameter according to Huggins equation. Also, the rheology of the solutions of higher concentrations (1-5%) were characterized by time dependent characteristics and pseudoplastic behaviors. The values of consistency index according to the power equation were exponen tially dependent upon concentration and temperature. The results showed that the rheological properties could differ greatly due to difference in varieties. The naked barley starch exhibited higher intrinsic viscosity, more thixotropic behavior and more dependence of consistency index on concentration and temperature than the covered barley starch.

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