食品科学 ›› 2014, Vol. 35 ›› Issue (4): 1-5.doi: 10.7506/spkx1002-6630-201404001

• 工艺技术 •    下一篇

正交试验优化苹果片低氧热泵干燥工艺

罗 磊,支梓鉴,刘云宏,朱文学,张玉先,朱 敏,王 强   

  1. 河南科技大学食品与生物工程学院,河南 洛阳 471023
  • 收稿日期:2013-07-14 修回日期:2014-01-15 出版日期:2014-02-25 发布日期:2014-03-17
  • 通讯作者: 罗磊 E-mail:13623896431@139.com
  • 基金资助:

    国家自然科学基金面上项目(31171723)

Optimization by Orthogonal Array Design of Heat Pump Drying Process for Apple Slices under Oxygen Condition

LUO Lei, ZHI Zi-jian, LIU Yun-hong, ZHU Wen-xue, ZHANG Yu-xian, ZHU Min, WANG Qiang   

  1. College of Food and Bioengineering, Henan University of Science & Technology, Luoyang 471023, China
  • Received:2013-07-14 Revised:2014-01-15 Online:2014-02-25 Published:2014-03-17
  • Contact: LUO Lei E-mail:13623896431@139.com

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。

关键词: 苹果片, 低氧, 热泵干燥

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.

中图分类号: