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食品与发酵工业  2021, Vol. 47 Issue (1): 198-205    DOI: 10.13995/j.cnki.11-1802/ts.024666
  生产与科研应用 本期目录 | 过刊浏览 | 高级检索 |
红薯叶粉热泵-热风联合干燥工艺优化
张迎敏1, 任广跃1,2*, 段续1,2, 刘盼盼1
1(河南科技大学 食品与生物工程学院,河南 洛阳,471000)
2(粮食储藏安全河南省协同创新中心,河南 郑州,450000)
Optimization of heat pump-hot air combined drying on sweet potato leaf powder
ZHANG Yingmin1, REN Guangyue1,2*, DUAN Xu1,2, LIU Panpan1
1(College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471000,China)
2(Collaborative Innovation Center of Grain Storage Security, Zhengzhou 450000,China)
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摘要 为保证红薯叶粉品质,降低加工能耗,采用热泵-热风联合干燥技术对红薯叶进行处理,在单因素试验基础上运用Box-Behnken Design优化试验,研究热泵干燥温度、热风干燥温度和转换点含水率对单位能耗、叶绿素含量、色泽L*值和吸湿性的影响,通过加权综合评分法推导多项式回归模型,进而优化联合干燥工艺参数。经响应面优化的干燥参数为:热泵干燥温度52 ℃、热风干燥温度73 ℃、转换点含水率58%,该工艺下单位能耗3 621.36 kJ/g、叶绿素含量6.42 mg/g、色泽L*值46.21、吸湿性7.19%,综合评分值与预测值拟合度高达99.632 5%,为红薯叶综合利用奠定了理论基础。
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张迎敏
任广跃
段续
刘盼盼
关键词:  红薯叶粉  热泵干燥  热风干燥  含水率    
Abstract: To determine ensure the quality of sweet potato leaf powder and reduce processing energy consumption, this study used heat pump-hot air combined drying technology to treat sweet potato leaves, based on a single factor test, the Box-Behnken Design (BBD) method was used to design and optimize the test to study the heat pump drying temperature, The influence of hot air drying temperature and moisture content of conversion point on unit energy consumption, chlorophyll content, color L* value and hygroscopicity, a polynomial regression model is derived by weighted comprehensive scoring method, and the parameters of combined drying process are optimized.The optimized parameters of the response surface are:heat pump drying temperature 52 ℃, hot air drying temperature 73 ℃, conversion point moisture content 58%, unit energy consumption under this process is 3 621.36 kJ/g, chlorophyll content 6.42 mg/g, color L value 46.21, moisture absorption 7.19%, and the comprehensive score value and the predicted value are as high as 99.63%, which lays a theoretical foundation for the comprehensive utilization of sweet potato leaves.
Key words:  sweet potato leaf powder    heat pump drying    hot air drying    moisture content
收稿日期:  2020-06-07      修回日期:  2020-07-16                发布日期:  2021-02-03      期的出版日期:  2021-01-15
基金资助: 国家自然科学基金项目(31671907);国家重点研发项目(2017YFD0400901);“智汇郑州o1125聚才计划”(郑政[2017]40号);河南省高校重点科研项目(20A550006)
作者简介:  硕士研究生(任广跃教授为通讯作者,E-mail:guangyueyao@163.com)
引用本文:    
张迎敏,任广跃,段续,等. 红薯叶粉热泵-热风联合干燥工艺优化[J]. 食品与发酵工业, 2021, 47(1): 198-205.
ZHANG Yingmin,REN Guangyue,DUAN Xu,et al. Optimization of heat pump-hot air combined drying on sweet potato leaf powder[J]. Food and Fermentation Industries, 2021, 47(1): 198-205.
链接本文:  
http://sf1970.cnif.cn/CN/10.13995/j.cnki.11-1802/ts.024666  或          http://sf1970.cnif.cn/CN/Y2021/V47/I1/198
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