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首页> 外文期刊>Food Science & Nutrition >Static and dynamic methods to determine adsorption isotherms of hemp seed ( Cannabis sativa L.) with different percentages of dockage
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Static and dynamic methods to determine adsorption isotherms of hemp seed ( Cannabis sativa L.) with different percentages of dockage

机译：静态和动态方法确定不同百分比的大麻种子对大麻种子（Cannabis sativa L.）的吸附等温线

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Adsorption and desorption isotherms of hemp seeds with 0%, 5%, 10%, 15%, and 20% of dockage were determined using the salt solution static (SSS) method. The wet hemp seeds with 0% dockage were also dried at 30℃ with 50% RH, 35℃ with 30% and 50% RH, and 40℃ with 30% and 50% RH inside a thin‐layer dryer (thin‐layer dynamic method). The hemp seeds with different percentages of dockage showed hysteresis, and this hysteresis became more obvious with the decrease of temperature. At the same condition, the equilibrium moisture content of hemp seeds with 0% dockage was approximately 0.5 percent points lower than that of the hemp seeds with dockage. The best equation to fit the equilibrium moisture content data under constant temperature and RH was the modified GAB equation for both adsorption and desorption isotherms. The constant rate period of drying was observed for 0.75?hr when drying air RH was 30% or when drying air temperature was 40℃. The Henderson and Pabis model was the best model to fit the thin‐layer drying data. The equilibrium moisture contents measured by the SSS method were lower than those measured by the thin‐layer dynamic method when temperature was ≤35℃.
机译：使用盐溶液静态（SSS）方法确定了对接率为0％，5％，10％，15％和20％的大麻种子的吸附和解吸等温线。将具有0％接驳率的湿大麻种子也分别在30℃，50％相对湿度，35℃，30％和50％相对湿度以及40℃，30％和50％相对湿度下在薄层干燥机中干燥（薄层动态方法）。不同对接百分比的大麻种子表现出滞后现象，且随着温度的降低，这种滞后现象更加明显。在相同的条件下，零种子的大麻种子的平衡水分含量比有种子的大麻种子的平衡水分含量低约0.5个百分点。在恒定温度和相对湿度下拟合平衡水分含量数据的最佳方程是吸附和解吸等温线的修正GAB方程。当干燥空气RH为30％或干燥空气温度为40℃时，观察到恒速干燥时间<0.75？hr。亨德森和帕比斯模型是拟合薄层干燥数据的最佳模型。当温度≤35℃时，采用SSS法测得的平衡水分含量低于采用薄层动力学法测得的平衡水分含量。

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