Microencapsulation by a Dehydrating Liquid: A Microstructural Study by Scanning Electron Microscopy

摘要

ABSTRACTMicrocapsules of gum arabic with ethyl caprylate as a model core‐material were prepared by a cold dehydration process. Emulsion of the core‐material in gum solutions was injected into ethanol, and the slurry of the microcapsules was then dried in a vacuum oven. Scanning electron microscopy was used to determine the effects of process parameters on the microstructure of the product. The results, which agreed well with chemical analysis of the core‐material retention in the microcapsule, helped in understanding microencapsulation in general and the cold dehydration process in particular and should be useful for efficient design of successful microencapsulation proc