Thanks are due to Mr. James Cyrus for experimental assistance and to Dr. George Miller of Georgia Institute of Technology, Atlanta, for his help in the refractive index measurements.
Refractive Index of the Dispersed Phase in Oil-in-Water Emulsions: Its Dependence on Droplet Size and Aging
Version of Record online: 25 AUG 2006
Journal of Food Science
Volume 48, Issue 2, pages 513–516, March 1983
How to Cite
RAY, A. K., JOHNSON, J. K. and SULLIVAN, R. J. (1983), Refractive Index of the Dispersed Phase in Oil-in-Water Emulsions: Its Dependence on Droplet Size and Aging. Journal of Food Science, 48: 513–516. doi: 10.1111/j.1365-2621.1983.tb10778.x
- Issue online: 25 AUG 2006
- Version of Record online: 25 AUG 2006
- Ms received 7/26/82; revised 10/15/82; accepted 10/28/82.
A simple method of determining the refractive index of the dispersed phase was applied on different gum-stabilized oil-in-water emulsions, in which this refractive index is taken to be equal to that of the continuous phase at (extrapolated) zero optical density point. Refractive indices of dispersed phases were usually lower than those of the oil part alone. In dilute emulsions, the refractive index of the dispersed phase increased with time, while optical density of emulsion decreased. In aged concentrated emulsions, both refractive index and optical density decreased with time. At a given composition, the refractive index and optical density varied directly with droplet size. The results are interpreted in terms of reasonable physical and chemicl phenomena.