【摘要】 本文介绍了冻干等三种食品保鲜方法在质量和成本方面的比较，探讨了几种典型产品冻干的经济效益，还展望了食品冻干的前景。更多还原

【Abstract】 This paper presents the results of different in the quality and cost between three methods of stored foodstuffs asfreeze-drying ect, Studies the effect on economics freeze drying for some products andforecasts the development too.更多还原