目的 综述国内外关于集合包装水果差压预冷的研究,并分析了存在的问题。 方法 从差压预冷技术在果品保鲜领域的应用背景出发,分析预冷的基本原理、特点及意义,归纳了目前差压预冷果品在理论和实验两方面的研究内容及成果。 结果 水果差压预冷的研究主要集中在包装箱内水果预冷的数值模型、送风工艺参数及通气包装结构设计等方面,包装箱上的开孔对调节预冷气流,促进热质交换具有重要的作用。 结论 果品预冷数学模型的系统性、可靠性及新型实验验证技术的精准性有待进一步研究,送风工况、预冷包装系统的结构及适用性须兼顾经济、强度因素进行优化。

Objective To review researches on forced-air precooling of multi-packed fruits and put forward relevant problems . Methods The application background, working principles, advantages and significance of forced-air precooling technology for fresh foods were introduced, and both theoretical and experimental studies were summarized. Results Recent researches mainly focused on numerical modeling, cooling parameters and ventilation packaging design during forced-air cooling process,openings on the packages effected the airflow, heat and mass transfer greatly. Conclusion Future research efforts should be directed to develop a more systematic and reliable mathematical model and more accurate experimental verification technology.The optimization of airflow condition and packaging structure should balance the economic and mechanical strength factors.