Caking Process and Microstructural Changes of Wall Materials Used in Spray-Drying Process

摘要

At 75 % relative humidity and 22 ℃, blends of powdered wall materials containing the highest concentration of maltodextrin, exhibit irreversible microstructural changes (bridging, agglomeration, compaction and liquefaction) identified using SEM technique. In contrast, the use of high concentration of SPI may reduce the caking process, keeping negative values of (T-T_g).