Abstract：The past development of freeze drying technology as well as the process of vacuum freeze drying in food processing are introduced.Also,the equipment and devices for vacuum freeze drying are detailed.It is indicated,in combination with the present condition of the food cold storage plants in China,that by further developing the technology financial investment could be decreased,technological content level of products could be raised,and economic benefit could be increased to the enterprises.
1999, Vol. 13 
