Inlet temperature of drying air and maltodextrin concentration both had effects on the glass temperature of the
pineapple powders. The addition of maltodextrin into the pineapple juice caused an increase toward the glass
transition temperature of the pineapple juice. The higher the maltodextrin to pineapple juice ratio, the higher the
glass transition temperature. This trend can be seen in studies conducted by Goula and Adamopoulos, (2010),
Fazaeli et al.,(2012) and Quek et al., (2007) where they reported that increment of maltodextrin concentration
increases yield of powders and reduces stickiness in powders, which can be related to the glass temperature. The
effect that maltodextrin has on increasing the glass temperature of the juice is due to the mixing of the high