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

<div>Schematic of the vacuum freeze dryer used. (1) Refrigeration machine; (2) freeze-drying chamber; (3) cooling/heating plate; (4) apple slice samples; (5) thermocouple temperature sensors; (6) heating machine; (7) control system; (8) cold trap; (9) refrigeration coils; (10) vacuum pump.</div>

Journal of Food Quality

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Figure 1

Figure 1: Effect of Hot-Water Blanching Pretreatment on Drying Characteristics and Product Qualities for the Novel Integrated Freeze-Drying of Apple Slices 

Figure 1 | Effect of Hot-Water Blanching Pretreatment on Drying Characteristics and Product Qualities for the Novel Integrated Freeze-Drying of Apple Slices 