洋葱加工废料的干燥特性

T. Prokopov, Maryia Georgieva, M. Nikolova, D. Atanasov, D. Taneva
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引用次数: 0

摘要

洋葱加工废料(OPW)在50、60、70和80℃的对流热风实验室规模干燥机中干燥。测定了干燥温度对干燥特性及干燥样品中总酚和总黄酮含量的影响。采用三种常用模型拟合实验干燥曲线。结果表明,干燥过程中未观察到恒速干燥周期,对数模型最适合拟合实验干燥动力学数据。干燥温度对干燥后的黄酮和总酚含量有显著影响。计算了有效扩散系数,确定活化能为28.05 kJ/mol。
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DRYING CHARACTERISTICS OF ONION PROCESSING WASTE
Onion processing waste (OPW) was dried in a convective hot-air laboratory scale dryer at 50, 60, 70 and 80ºC. The effect of drying temperature on the drying characteristics and on the total phenolic and total flavonoid content of dried samples was determined. Three mostly used models were applied for fitting the experimental drying curves. The results indicated that the constant rate-drying period was not observed and that the logarithmic model was the most suitable for fitting the experimental drying kinetic data. The drying temperature significantly affected the total phenolic and total flavonoid content of dried OPW. The values of effective diffusivity were calculated and the determined value of activation energy was 28.05 kJ/mol.
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CiteScore
1.10
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0.00%
发文量
12
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