摘要
研究并优化了银鱼冷冻干燥时的工艺条件,包括预冻方式、加热板程序对冷冻干燥过程的影响,得出银鱼冻干工艺条件为:采用中速冻结的方式将银鱼预冻,在10 Pa左右的真空度、冷凝器温度为-45℃的条件下,采用的加热板加热程序分别为0℃保持3 h,10℃保持0.5 h,20℃保持0.5 h,然后将温度升高至40℃.当物料温度接近于加热板温度的时候表示物料基本冻干.
The purpose of this study is to optimize the freeze drying condition of whitebait, including the mode of pre-freezing and heating procedure of plate. The result was as follows： pre-freezing the whitebait at medium cooling rate, a pressure about 10 Pa, a condenser temperature of -45 ℃. In addition, the heating plate procedure was as follows, keeping the temperature in 0 ℃ for 3 hours , then increasing temperature to 10℃ for half an hour, and to 20℃ for anoher half an hour, in the end, rising temperature to 40℃ till the temperature of sample reached the plate temperature.
出处
《食品与生物技术学报》
CAS
CSCD
北大核心
2005年第5期89-93,共5页
Journal of Food Science and Biotechnology
关键词
银鱼
冻干
加热板程序
whitebait
freeze drying
heating procedure
