| 正交试验优化苹果片低氧热泵干燥工艺 |
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| 引用本文： | 罗磊,支梓鉴,刘云宏,朱文学,张玉先,朱敏,王强.正交试验优化苹果片低氧热泵干燥工艺[J].食品科学,2014,35(4):1-5. |
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| 作者姓名： | 罗磊 支梓鉴 刘云宏 朱文学 张玉先 朱敏 王强 |
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| 作者单位： | 河南科技大学食品与生物工程学院，河南 洛阳 471023 |
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| 基金项目： | 国家自然科学基金面上项目(31171723) |
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| 摘 要： | 以红富士苹果作为实验材料，以氮气为干燥介质置换空气降低设备中氧体积分数，研究了温度、切片厚度、氧体积分数和风速对苹果片热泵干燥速率、L值、VC和总酚含量等指标的影响，正交试验结果表明：最佳干燥工艺参数为干燥温度55 ℃、切片厚度5 mm、氧体积分数5%，干燥后苹果片水分含量为5.83%，L值为83.01，VC含量为3.68 mg/100 g，总酚含量为68.26 mg/100 g。
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| 关 键 词： | 苹果片 低氧 热泵干燥 |
| 收稿时间： | 2013-07-14 |
Optimization by Orthogonal Array Design of Heat Pump Drying Process for Apple Slices under Oxygen Condition |
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| LUO Lei,ZHI Zi-jian,LIU Yun-hong,ZHU Wen-xue,ZHANG Yu-xian,ZHU Min,WANG Qiang.Optimization by Orthogonal Array Design of Heat Pump Drying Process for Apple Slices under Oxygen Condition[J].Food Science,2014,35(4):1-5. |
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| Authors: | LUO Lei ZHI Zi-jian LIU Yun-hong ZHU Wen-xue ZHANG Yu-xian ZHU Min WANG Qiang |
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| Affiliation: | College of Food and Bioengineering, Henan University of Science & Technology, Luoyang 471023, China |
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| Abstract: | This study was conducted to dry fresh-cut red Fuji apple slices using nitrogen as drying medium to reduce the
oxygen concentration in a heat pump dryer. The influences of drying temperature, slice thickness, oxygen concentration and
air speed on drying rate, brightness, vitamin C (VC) content and total phenol content were investigated. The experiment
results of orthogonal array design showed that the optimal drying parameters were as follows: temperature, 55 ℃; slice
thickness, 5 mm; and oxygen volume fraction, 5%. The moisture content of apple slices dried under these conditions was
5.83%, brightness value 83.01, VC content 3.68 mg/100 g, and total phenol content 68.26 mg/100 g. |
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