Pre-weighed jujube slices (300 g) were dried in a HA drier and a laboratory-type SMIR dryer The conditions of SMIR dry were air velocity of 2.11 m/s and infrared power of 1125 W. The size of
sample tray in SMIR dryer was 31 37 cm, and the distance between
the lights and the tray was 11 cm.