食品科学 ›› 2008, Vol. 29 ›› Issue (3): 220-224.

• 工艺技术 • 上一篇    下一篇

红葱真空冷冻干燥工艺技术的初步研究

 李崇高, 黄建初   

  1. 广州城市职业学院; 广州城市职业学院 广东广州510405; 广东广州510405;
  • 出版日期:2008-03-15 发布日期:2011-08-24

Preliminary Study Vacuum Freeze-drying Technology of Red Onions

 LI  Chong-Gao, HUANG  Jian-Chu   

  1. Guangzhou City Ploytechnic College, Guangzhou 510405, China
  • Online:2008-03-15 Published:2011-08-24

摘要: 本实验研究了热水罐温度、物料装载厚度、冻干仓压力等因素对水沥红葱冻干时间、冻干品质的影响。通过单因素试验和正交试验,得出了红葱冻干的最佳工艺参数:热水罐温度55℃、物料装载厚度30mm、冻干仓压力150Pa;在此工艺下,红葱的冻干得率为6.9%,成品含水量为3.5%,色泽呈绿色、组织呈新鲜状、葱味浓郁、入口脆爽,复水性能较佳。

关键词: 水沥红葱, 真空冷冻干燥, 工艺参数

Abstract: The hot water tank temperature, thickness of material loading and freeze-dried wharf pressure on freeze-dried time and freeze-dried quality of red onions were studied. The single factor test and the orthogonal test were drawn red onions. The better vacuum freeze-drying process parameters: water tank temperature setting of 55 ℃, material loading thickness of 30 mm, freeze-drying warehouses pressure 150 Pa. In this process parameters, the freeze-dried red onions yield of 6.9%, better sensory quality, the water-back was better, the color was green, fresh tissues like the oil rich flavor.

Key words: shui-li red onions, vacuum freeze-drying, process parameters