In addition to its ability to better maintain the microstructure of frozen foods, power ultrasound can also improve the other quality parameters such as texture, color and ascorbic acid content. Xin et al. [11] studied the effect of ultrasound assisted freezing (UAF) on the quality parameters of broccoli. The results from their study showed that the UAF when applied at selected acoustic intensities within a power range of 0.250–0.412 W/cm2 better preserved the calcium bound to the cell wall. The textural attributes, color, ascorbic acid content and microstructure of frozen broccoli were better preserved and the drip loss was minimized by the application of UAF. Islam et al. [12] applied power ultrasound at different levels during immersion freezing of three mushroom varieties. They found that the application of ultrasound reduced the drip loss significantly and better preserved the microstructure of frozen samples. Similar results were reported by Hu et al. [27], who found that the application of power ultrasound during immersion freezing increased the textural hardness of frozen dough. Besides, UAF was also found to be helpful in maintaining the quality of thawed foods. Xu et al [48] found that the textural hardness and water-holding capacity of thawed edamame were greatly improved by the use of power ultrasound at 58 W for a short time (0.7 min) during freezing (see Table 1).