荔枝脱水干燥技术研究进展

Research Progress on Dehydration and Drying Technology of Litchi

荔枝除了美味可口外,还具有很高的食用价值、药用价值和经济价值。但是,因为新鲜荔枝的贮藏时间很短,极容易于发生变质,对贮藏条件要求也很高。若将荔枝脱水干燥制成荔枝干,不仅可以保持新鲜荔枝的风味和营养物质,而且可以很大程度上延长荔枝的贮藏时间,提高荔枝的附加价值。通过总结荔枝干燥的先进技术(热泵干燥、微波真空干燥、真空冷冻干燥、热风-热泵联合干燥),对这些先进干燥技术的应用前景进行展望。

Litchi has high food value, medicinal value and econonfic value, in addition to its delicious taste. However, because of the short storage time of fresh litchi it is highly susceptible to deterioration and high requirements for storage conditions. The drying of lychees into dried litchi not only maintains the flavor and nutrients of fresh litchi, but also greatly prolongs the storage time of litchi and increases the added value of litchi. This article mainly summarized the advanced drying technology of litchi （heat pump drying, nficrowave vacuum drying, vacuum freeze drying, hot air-heat pump combined drying） , and prospected the application of advanced drying technology of litchi.