精白米の吸湿過程における平衡含水率の測定 初期含水率の平衡含水率に与える影響

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タイトル別名
  • Measurement of the Adsorption Equilibrium Moisture Content of Polished Rice. Effect of Initial Moisture Content on the Adsorption Equilibrium Moisture Content.
  • セイハクマイ ノ キュウシツ カテイ ニ オケル ヘイコウ ガンスイリツ ノ
  • Effect of Initial Moisture Content on the Adsorption Equilibrium Moisture Content
  • 初期含水率の平衡含水率に与える影響

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The moisture adsorption properties of polished rice were investigated using a dynamic ventilatory method. Air temperatures of 10, 20, 30 and 40°C, and relative humilities of 50, 60, 70, 80 and 90%RH were used to obtain sorption coefficient and equilibrium moisture content data. Air velocity was kept constant at 32.4m/min for all the measurements. Equilibrium moisture content of polished rice was fitted with the Chen-Clayton's equation by using a special method of solution for the non-linear least squares method. The results revealed that the equilibrium moisture content depends on initial moisture content, and this can be supposed as an effect of hysteresis.

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