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Microencapsulation by a Dehydrating Liquid: A Microstructural Study by Scanning Electron Microscopy
Author(s) -
ZILBERBOIM R.,
KOPELMAN I.J.,
TALMON Y.
Publication year - 1986
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1986.tb13111.x
Subject(s) - scanning electron microscope , dehydration , microstructure , gum arabic , emulsion , slurry , chemical engineering , materials science , core (optical fiber) , coacervate , freeze drying , chemistry , chromatography , composite material , organic chemistry , biochemistry , engineering
Microcapsules 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 processes.