For snack chips, there are some disadvantages in structure for FD
samples. Because of the lack of porous structure, freeze-dried mushroom
slices lack crispness (Xie, Zhao, Xiong, & Zhao, 2012). Furthermore,
because of their low hardness (Fig. 8), FD-treated A. bisporus
slices are fragile and difficult to transport. In contrast, in MVD samples
after blanching, the organizationwas loosened, forming a firmvesicular
structure (Fig. 9c and d) that provides sufficient crispness and hardness
(Xie et al., 2012). In addition, the micro-structure of the MWB sample
was more uniform than that of the HWB sample. These data suggest
that blanching treatment plays an important role in the formation of
the structure of dried A. bisporus, and that MWB may be a moderate
method to improve the structure of food products.