Effect of Hot-Water Blanching Pretreatment on Drying Characteristics and Product Qualities for the Novel Integrated Freeze-Drying of Apple Slices

Figure 7

Microphotographs from TEM of cell wall and membrane in apple slices before and after hot-water blanching. (a) Before hot-water blanching at 20000x magnification; (b) after hot-water blanching at 20000x magnification; (c) before hot-water blanching at 40000x magnification; (d) after hot-water blanching at 40000x magnification; CW: cell wall; CM: cell membrane.

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