Influence of Flocculation on Optical Properties of Emulsions |
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| Authors: | W Chantrapornchai FM Clydesdale D J McClements |
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| Affiliation: | Authors are with the Biopolymers and Colloids Research Laboratory, Dept. of Food Science, Univ. of Massachusetts, Amherst, MA 01003. |
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| Abstract: | ABSTRACT: The influence of droplet flocculation on the optical properties of 1 and 10 wt% oil-in-water emulsions with and without dye was investigated. Flocculation was induced by addition of SDS micelles to the aqueous phase of emulsions to increase the depletion attraction between droplets. Droplet flocculation caused the spectral reflectance and L -value (lightness) of emulsions to decrease, and the magnitude of the a - and b - values to increase, but the changes were rather small. Similar trends were observed for emulsions with and without dye. Overall, emulsion optical properties were dominated by light scattering from droplets rather than flocs. |
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| Keywords: | emulsions flocculation optical properties color |
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