Study on the Process of Loquat under Vacuum Freeze-drying Condition

In order to study a non-polluting way of processing loquat fruits,we dealt with the vacuum freeze-drying processing of the loquat fruits and compared the technology of hot air drying with the vacuum drying of loquat fruits. The results showed that:the optimal processing was that the 90% mature loquats as a raw material were peeled and cut into 5 mm slices,and then dried by the technology of vacuum freeze-drying; the temperature of first drying was -15℃, pressure 100Pa, duration 6hours; then the temperature of secondary drying was 40℃, pressure 100Pa, duration 7 hours. Following the steps mentioned above, the dried loquat fruits smell elegant,taste fine and smooth and look yellowish, the texture is porous and have high level in rehydration.