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柠檬片热风干燥工艺参数优化

Academic Periodical of Farm Products Processing(2013)

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Abstract
以新鲜柠檬为原料,以柠檬片厚度、热风温度、热风风速为考察因素,研究其热风干燥特性及最佳干燥工艺参数。结果表明,柠檬片厚度、热风温度对干燥速率有较大影响,而热风风速对干燥速率有一定影响;通过单因素和正交试验得到柠檬片干燥的优化工艺参数为温度为80℃,厚度为3 mm,风速为0.5 m/s,此时综合指标为2.341。在此干燥条件下进行验证试验,得到柠檬片的VC质量分数为137.06 mg/100 g,复水比为4.290,干燥速率为0.254 g/min,单位能耗为3.180 W/g,综合指标为2.368,与优化结果接近。
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Key words
parameter optimization,hot-air drying,characteristics,lemon
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