The impacts of HAD with three temperatures on the hardness of BSS were compared. Statistically, there was no significant difference (P > 0.05) between three drying temperatures. However, the hardness of BSS increased continuously with increasing temperature, reaching to the peak (19.29 N) at 90 °C. Through the study on hardness of dried-rehydrated apple slices, Vega-Galvez et al. (2012) also discovered that at higher temperatures, the samples achieved relatively higher firmness. This was caused by the relative high drying rate at higher temperatures (Wang et al., 2010). FD samples achieved significantly higher hardness than HAD samples (P > 0.05), indicating that FD enables sample to maintain similar hardness of fresh samples. This may be because fewer cell structure and pectin substances of BSS were destroyed during FD, thus enabling samples to maintain original texture properties (Huang et al., 2012). Askari et al. (2009) also found that higher texture strength was observed in the vacuum-dried samples.