米デンプンこ化液の流動方程式に関する研究

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タイトル別名
  • Studies on the Flow Equation of Rice Starch Pastes
  • ベイデンプン コカエキ ノ リュウドウ ホウテイシキ ニカンスルケンキュウ ノ

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The flow behavior of 5wt% rice starch pasetes was measured at 20-80°C by using a capillary tube viscometer. The flow equation was expressed as follow:<BR>γ=(1/K)(gcτ-gcτy)n<BR>where, γ: shear rate (sec-1), τ: shear stress (gf/cm2), gc: gravitational conversion factor(g·cm/gf·sec2). The flow parameters K, n and τy were calculated using a non-linear least square method. <BR>The value of τy could be overlooked, and the value of n was 1.2. The values of K which fixed n=1.2 and τy=0.0 were expressed by following ANDRADE equation.<BR>K=5.41×10-4exp(5.34×103/RgT)<BR>where, T: measuring temperature (°K), Rg: gas constant(cal/g-mol·°K).

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