Journal
DRYING TECHNOLOGY
Volume 28, Issue 3, Pages 323-329Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/07373931003627098
Keywords
Additive; Hollow particle; Morphology; Particle size; Spray-dried powder
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Funding
- Ministry of Education, Science, and Culture of Japan [15580108]
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The effect of additives on the morphology of spray-dried powders was investigated by using confocal laser scanning microscope (CLSM) and scanning electron microscopy (SEM). Using CLSM, the vacuoles of powder could be observed easily without ripping off the particle. The wall material was labeled with fluorescein sodium. CLSM images indicated that spray-dried powders at higher outlet temperatures have higher percentages of hollow particles. The addition of gelatin, decaglycerin monolaurate, or ethanol to gum arabic/maltodextrin (GA/MD) solution affected the increment of the percentage of hollow particles in spray-dried powders.
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