The TSS of pineapple concentrate influences temperature changes, average freezing gradient and also freezing rate. The higher the TSS, the lower the surface and center temperature. It is caused by the crystal of sucrose since it has higher freezing point compared to water [9]. However, the lowest surface and center temperature was shown by the TSS of 18.90 produced by the double stage evaporation.Higher TSS of pineapple concentrate also increases the average freezing gradient and freezing rate as demonstrated in Fig. 5. it has the maximum value at the TSS of 18.90 produced by double stage evaporation. The temperature changes influence the freezing rate. The higher the freezing rate, the higher the temperature changes. It is caused by the higher heat conductivity of sucrose